WO2013114421A1 - Display system, display control system, audio equipment, display method, and program - Google Patents

Description

Display system, display control apparatus, acoustic device, display method, and program

[Technical Field] The present invention relates to a display system, a display control device, an audio device, a display method, and a program for presenting information for efficiently searching for desired content.

Conventionally, in order to make it easier to find a desired piece of music from a large amount of music (content), search items such as the age and genre of the released music are displayed one after another, and the corresponding music is based on the user's response to that. There is known a search device that extracts and presents (for example, Patent Document 1).

On the other hand, DJ software that displays music parameters such as BPM and KEY is also known as a clue to search for a desired music (for example, Non-Patent Document 1).

By the way, in DJ equipment for DJ performance, etc., a mix operation for mixing a plurality of music pieces is often used. In addition, audio signal mixing operations are frequently used in DTM (Desktop Music), which is a musical performance form centered on computers, and DAW (Digital Audio Workstation), which edits digital audio signals. Therefore, it is considered to search for the target music to be mixed with the music being played using the technique of Patent Document 1. In this case, BPM (Beats Per Minute), KEY (tonality), etc. may be displayed as search items, and the user may respond with an appropriate value.

JP 2006-133939 A Traktor 2 Manual “Traktor 2 Getting Started Japanese.pdf p.17-18“ 3.1 Overview ”” Native Instruments

However, when the technique of Patent Document 1 is used, it is assumed that the user knows the optimum BPM and KEY for a mix with a certain piece of music. For this reason, DJ beginners and general users cannot input appropriate answers to the presented search items, and as a result, there is a problem that music suitable for mixing cannot be extracted. Further, in the case of a DJ device, it is required to quickly select a music according to the atmosphere of the place. However, in the technique of Patent Literature 1, it is necessary to input answers for a plurality of search items. There is also a problem that it takes time.

On the other hand, when the browse function of Non-Patent Document 1 is used, although the trouble of inputting the answer to the search item can be omitted, if it is a DJ beginner, it is determined whether or not the music is suitable for mixing only by looking at the music parameters. Cannot judge instantly. In particular, when a large number of attribute items such as BPM, KEY, and genre are displayed as music parameters, it is assumed that the user is at a loss.

In view of the above problems, an object of the present invention is to provide a display system, a display control device, an audio device, a display method, and a program for easily and quickly searching for music suitable for mix reproduction.

The display system of the present invention is a display system that displays the inter-content fitness of two or more contents, and relates to two or more contents, a parameter acquisition unit that acquires parameters for a plurality of attributes, and each acquired attribute An fitness determination unit that determines the attribute fitness that is the fitness for each attribute based on the parameters of the above, an fitness display unit that displays a plurality of attribute fitness determined for each attribute as the inter-content fitness, It is provided with.

The display control device of the present invention is a display control device for displaying the inter-content fitness of two or more contents, a parameter acquisition unit that acquires parameters for a plurality of attributes for two or more contents, Based on the acquired parameters for each attribute, the fitness determination unit that determines the attribute fitness that is the fitness for each attribute, and the plurality of attribute fitness determined for each attribute as the inter-content fitness are displayed on the display screen. And a display control unit for displaying.

The display method of the present invention is a display method for displaying the inter-content fitness of two or more contents, a parameter acquisition step for acquiring parameters for a plurality of attributes for two or more contents, and for each acquired attribute An fitness determination step for determining an attribute fitness that is an fitness for each attribute based on the parameters of the above; an fitness display step for displaying a plurality of attribute fitness determined for each attribute as the inter-content fitness; It is characterized by performing.

According to these configurations, since the inter-content fitness of two or more contents is displayed, it is possible to determine whether or not the content is adaptable at a glance (whether it is suitable for mixing). Further, since a plurality of attribute fitness levels are displayed as the inter-content fitness levels, it is possible to check which attribute is suitable for the mix. For example, it is conceivable to display attribute adaptability such as BPM and KEY as a plurality of attribute adaptability. Thereby, it is possible to easily and quickly find a music suitable for a mix having BPM and KEY close to the music being reproduced.
The “inter-content fitness of two or more contents” refers to the adaptability of the other content with respect to one content in the case of two contents. Further, in the case of three or more contents, for example, when the A content, the B content, and the C content are mixed, the fitness between the three or more contents is indicated. For this reason, the inter-content fitness decreases as the number of contents increases. In the case of three or more contents, for example, the fitness of B content and C content with respect to A content may be individually determined.
Further, the “inter-content fitness” does not necessarily have to be a fitness based on a mix. For example, if the content is a video, the discomfort when two videos are played simultaneously on adjacent screens or the discomfort when the two videos are played back continuously is displayed as “inter-content fitness”. May be.
In addition, “content” is a concept including information composed of text or a combination thereof in addition to music (music) and video (image).
In addition, as the “attribute”, when the content is a music piece, BPM, KEY, melody, harmony, rhythm, genre, and the like related to “music analysis result” can be considered. Attributes not related to "music analysis result" include content identification information, title name, producer (artist, composer, etc.), label, rate, database registration date, content last update date, content length In addition, metadata and tag information including the number of times the content has been played can be considered.

In the above display system, the fitness level display unit displays a plurality of attribute fitness levels by a shape, a score, or a combination of them and a color.

According to this configuration, it is possible to indicate a plurality of attribute adaptability in an easy-to-understand manner by a combination of shape and color or a combination of score and color.

In the above display system, the fitness display unit displays a plurality of attribute fitness in the form of a radar chart.

According to this configuration, it is possible to indicate a plurality of attribute adaptability in an easy-to-understand manner based on the shape of the radar chart. Also, the overall evaluation (inter-content adaptability) of a plurality of attribute adaptability can be indicated by the area in the polygon of the radar chart.

In the display system described above, a reproduction candidate display unit that displays a plurality of contents that are candidates for reproduction sorted in an order according to any one of a plurality of attribute fitness levels, and a radar that rotates a radar chart And a chart rotation operation unit, wherein the reproduction candidate display unit sorts and displays a plurality of contents according to the attribute fitness of the attribute assigned to the axis extending in a predetermined direction from the center of the radar chart. And

According to this configuration, since a plurality of contents serving as reproduction candidates are displayed in the order according to the attribute fitness, the desired contents can be found more quickly. In addition, the sort condition can be easily switched by rotating the radar chart.
Note that the inter-content fitness may be calculated based on a plurality of attribute fitness, and a plurality of contents that are reproduction candidates may be displayed in the order according to the inter-content fitness. The sort condition may be selectable from the attribute fitness of each attribute and the inter-content fitness.

The display system further includes an attribute selection unit that allows the user to arbitrarily select a plurality of attributes from a plurality of attribute candidates, and the parameter acquisition unit sets parameters for the plurality of attributes selected by the attribute selection unit. It is characterized by acquiring.

According to this configuration, the attribute can be selected according to the user's preference and usage. As a result, the content desired by the user can be found more quickly.
The parameter acquisition unit is selected by the attribute selection unit when displaying a plurality of attribute fitness values on the radar chart and the number of attributes selected by the attribute selection unit is smaller than the number of axes of the radar chart. Parameters for attributes other than attributes (predetermined attributes) are also acquired at the same time.

The display system further includes a content selection unit that selects a content to be reproduced next from the plurality of contents displayed on the reproduction candidate display unit, and the fitness determination unit performs the next operation on the content being reproduced. It is characterized in that the attribute adaptability of the content to be reproduced is determined.

According to this configuration, in the case of a DJ device or the like, a mixed playback that switches to the next music while mixing a part of the music being played is often used. In such a case, the next suitable for mixing is used. The music can be found easily and quickly.

In the above display system, the parameter acquisition unit acquires parameters in a partial section of each of two or more contents.

According to this configuration, for example, the attribute adaptability can be displayed for BPM and KEY of only the top part of content (for several seconds, for several beats). Thereby, for example, a more appropriate attribute fitness in a partial section (mix target section) to be mixed can be displayed for music whose BPM changes or modulates in the middle.

The above display system is characterized by further comprising a section designating section for designating a partial section for each content.

In the above display system, the partial section is a mixed target section in which two or more contents are mixed and played back, and the section specifying unit specifies the start point or end point of the partial section for each content. It is characterized by.

According to these configurations, the mix target section can be designated according to the user's preference. In addition, since only the start point or end point of a partial section needs to be specified, the mix target section can be specified more easily.
When the start point or the end point is designated, it is preferable that the length of the partial section is automatically set in consideration of BPM or the like. Also, the length of the partial section may be a fixed value.

In the above display system, a playback history acquisition unit that acquires a playback history of content, and a table generation unit that calculates and tabulates attribute adaptability between two or more parameters related to an arbitrary attribute based on the playback history; , And the fitness determination unit refers to the table to determine the attribute fitness.

According to this configuration, even when the parameter cannot be quantified, the attribute fitness can be determined by a simple process. For example, when the attribute is a content producer, if the content of the producer A and the producer B has been mixed and played back in the past, the attribute fitness is increased, and conversely the mix has not been played back. It may be possible to generate a table for each combination of two or more producers, such as setting the attribute fitness low.

In the above display system, the fitness level display unit displays a plurality of attribute fitness levels and a combined fitness level obtained by adding the plurality of attribute fitness levels in a switchable manner.

According to this configuration, "multiple attribute fitness" is displayed when you want to check which attribute is suitable for the mix, and "total fitness" when you want to check the overall inter-content fitness at a glance. The display can be switched according to the user's preference.

The acoustic device of the present invention includes the above display system or the above display control device, and a content reproduction unit that reproduces content.

The program of the present invention causes a computer to execute each step in the above display method.

By using these, it is possible to realize an audio device and a display method capable of easily and quickly searching for highly adaptable content.

The following configuration is also possible. The display system further includes a content playback unit that plays back content, and a playback candidate display unit that displays a plurality of playback candidate content, and the fitness determination unit displays playback candidate display for the content being played back. The attribute adaptability of each content displayed in the section is determined.

According to this configuration, it is possible to display a plurality of attribute fitness values for each content that is a reproduction candidate. That is, since the adaptability between contents of a plurality of contents with respect to the contents being reproduced can be simultaneously compared, desired contents can be found more quickly.

In the above display system, the parameter acquisition unit dynamically acquires the parameters of the playback section including the playback point being played at the present time for the content being played back.

According to this configuration, the attribute adaptability can be dynamically determined according to, for example, the current BPM or KEY of the content being played back. This makes it possible to search for the next content that is more suitable for BPM and KEY in the playback section in the situation of “I want to mix now”. Further, when the adjustment range of the reproduction speed can be varied, it can be considered that the fitness of the BPM is determined according to the adjustment range.

In the above display system, the fitness determination unit determines the attribute fitness based on the relative values of parameters of two or more contents.

According to this configuration, the attribute adaptability can be determined by a simple process based on the relative value (matching degree or difference) of the parameters. As the relative value of the parameter, a difference in BPM, a shift amount of KEY on the fifth degree, and the like can be considered.
The “fifth degree” refers to a tonality space in which each of the 12 major and minor keys is arranged in an annular shape, and the subgenus is arranged in the clockwise direction and the counterclockwise direction in each key. A combination of major and minor keys located at the same angle is a parallel tone. For this reason, the tonality located closer to the fifth degree includes more common pitches, and it becomes difficult to generate a dissonance when mixed.

It is a block diagram of PC concerning one Embodiment of this invention. It is a figure which shows the example of a display of the operation screen of a file music player. It is a functional block diagram of PC. It is a figure which shows the calculation reference | standard of an attribute mix degree about each attribute. It is a figure which shows rotation operation of a radar chart. It is a flowchart which shows the flow of a mix reproduction | regeneration process. It is explanatory drawing of the area designation | designated operation which concerns on 2nd Embodiment. It is explanatory drawing which shows the modification of an area designation | designated operation. It is a system configuration figure of a display system concerning a 3rd embodiment. It is a figure which shows an example of a correspondence table and an attribute table. It is a figure which shows the other example of a display of an attribute mix degree. It is explanatory drawing of display switching of an attribute mix degree and a total mix degree. It is a figure which shows the other example of a display of an attribute mix degree.

Hereinafter, a display system, a display control device, an audio device, a display method, and a program according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present embodiment, a case where the present invention is applied to a “file music player” for DJ operating on a personal computer (hereinafter referred to as “PC”) will be exemplified.

[First Embodiment]
FIG. 1 is a configuration diagram showing a schematic configuration of a PC 10 (display system, display control device, acoustic device). As shown in the figure, the PC 10 includes a display unit 11 (display screen), an operation unit 12, an external storage device interface unit (hereinafter referred to as “external storage device I / F unit”) 13, a communication unit 14, and a control. In addition to the unit 15, the storage unit 16, the reproduction processing unit 17, and the audio output unit 18, a bus 19 for connecting them is provided.

The display unit 11 displays an operation screen D0 (see FIG. 2) of the file music player on the display screen. In particular, the present embodiment is characterized in that the mix degree (fitness) between two music pieces (contents) is displayed in the mix degree display area Eb of the operation screen D0. Here, the “mix degree” is an index that quantitatively represents the degree of compatibility when two music pieces are mixed and reproduced with a certain rule. That is, if the degree of mixing is high, it means that two music pieces can be mixed and reproduced without a sense of incongruity. As described above, in this embodiment, by presenting the degree of mixing to the user, even a DJ beginner can easily select a music piece quickly and realize mixed reproduction. Details will be described later.

The operation unit 12 includes a mouse, a keyboard, a touch pad, and the like, and is used for a user to perform various operations. In this embodiment, it is mainly used for the selection operation of the music to be mixed.

The external storage device I / F unit 13 inputs and outputs information between the PC 10 and the external storage device 30 such as reading music information from the external storage device 30. The external storage device 30 refers to a storage device (such as an external hard disk device) locally connected to the PC 10 or a USB memory that can be read by a memory slot.

The communication unit 14 communicates between the PC 10 and a device on the network NT, such as acquiring music information from the memory of a device (such as a Web server) on the network NT via the network NT such as the Internet or an intranet. .

The control unit 15 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and performs various arithmetic processes. Also, display control of the display unit 11 based on the operation of the operation unit 12, information input / output control via the external storage device I / F unit 13 and the communication unit 14, music analysis processing / playback control, and the like are performed.

The storage unit 16 is composed of a hard disk drive or the like, and stores a dedicated application 20 (DJ software) for realizing a file music player and also stores music information. As the “music information”, a music file (or a music file path) and music accompanying information are stored. The music accompanying information includes music identification information (music ID), music title name, album name, producer name (artist name, composer name), genre name, remixer name, label name, artwork image file (or image). File path), release date or release date, rate (evaluated by user), BPM (Beats Per Minute), KEY (tone) of music, voice waveform data, presence or absence of music, melody, harmony, rhythm, database registration date , The last update date of the music file, the length of the music (playback time), the access history such as the playback count and playback date, and the like. The artwork refers to album artwork, music artwork, or an image associated with the music by the user.

Among these pieces of music accompanying information, genre, BPM, music key, voice waveform data, presence / absence of musical tone, melody, harmony, rhythm, etc. may be set in advance as part of the music accompanying information. Information obtained from the analysis result of the music file by the dedicated application 20 may be used. These pieces of information may be input (designated) by the user.

The reproduction processing unit 17 performs reproduction processing of the music file under the control of the control unit 15 and outputs the reproduction signal to the audio output unit 18. The audio output unit 18 includes a DSP (Digital Signal Processor), an amplifier, a speaker, or headphones, and outputs a reproduction signal. Note that an external device may be used as the audio output unit 18.

Next, the operation screen D0 of the file music player will be described with reference to FIG. The operation screen D0 includes a playback music display area Ea on the upper left side of the screen, a mix degree display area Eb on the upper right side of the screen, and a music selection area Ec on the lower side of the screen.

The reproduction music display area Ea is an area for displaying information on the music being reproduced, an artwork display area 51 for displaying the artwork of the music, a music title name, an artist name, a release date, a label, a composer name, and the like. Is displayed, and a second music information display area 53 for displaying BPM, KEY, genre name, and the like.

The mix degree display area Eb is an inter-music mix degree (between contents) between two pieces of music being reproduced (hereinafter referred to as “preceding music”) and music to be reproduced next (hereinafter referred to as “subsequent music”). (Adaptability) is an area to be displayed as a graph. In the present embodiment, an attribute mix degree (attribute adaptability) that is a mix degree for each attribute is displayed by the shape of the radar chart 55 including three axes. For example, the “BPM” axis indicates a mix degree related to BPM, the “KEY” axis indicates a mix degree related to tonality, and the “ITEM” axis indicates a mix degree related to a genre or an artist. A method for calculating each mix degree will be described later.

Also, the song selection area Ec displays a list of songs that are playback candidates. The music displayed here is intended for music stored in the storage unit 16. Each piece of music displays parameters for attributes such as “TITLE” and “ARTIST”, and displays a reduced artwork 57 in the “TITLE” column.

The attribute items displayed in the music selection area Ec can be arbitrarily selected by the user. In addition, the music displayed as reproduction candidates in the music selection area Ec can be narrowed down by inputting filtering conditions (genre, artist, album, BPM, playlist, keyword, etc.).

Here, the operation of the operation screen D0 will be briefly described. First, the user selects a reproduced music from the music selection area Ec using a cursor key or the like. The selected music is displayed as a cursor (illustration, shaded display). Subsequently, when the preceding music is determined by the operation of the enter key or the like, the music information is displayed in the reproduction music display area Ea, and the mix degree is displayed in the mix degree display area Eb. At this time, since the music selected in the music selection area Ec and the music displayed in the reproduction music display area Ea are the same, each attribute mix displayed in the mix display area Eb is maximized. . Thereafter, when the cursor key is pressed in order to select the subsequent music from the music selection area Ec, the selected music changes every time the cursor key is pressed, and each of the music displayed in the mix degree display area Eb accordingly. The attribute mix degree changes. The user selects music suitable for mix reproduction while checking the mix degree display area Eb. Finally, when the enter key is pressed, the music displayed at the cursor is determined as the subsequent music, and mixed reproduction is performed.

Next, the functional configuration of the PC 10 (file music player) will be described with reference to FIG. The PC 10 includes an attribute selection unit 110, a parameter acquisition unit 120, a radar chart rotation operation unit 130, a reproduction candidate display unit 140, a content selection unit 150, a content reproduction unit 160, an fitness determination unit 170, an fitness level as main function configurations. A display unit 180 (display control unit), a parameter storage unit 210, and a content storage unit 220 are provided.

Of these units, the parameter storage unit 210 and the content storage unit 220 are realized by the storage unit 16 (shown by dotted lines). The attribute selection unit 110, the radar chart rotation operation unit 130, and the content selection unit 150 are realized by the operation unit 12. The other units are realized by the control of the control unit 15 using the dedicated application 20.

The content storage unit 220 stores a large number of music files. The parameter storage unit 210 stores attribute parameters for each attribute for each music file stored in the content storage unit 220. The attributes include “BPM”, “KEY”, “ITEM”, “VOLUME”, and “TITLE” (see FIG. 4). The attribute parameter is information attached to the music file as the music accompanying information or information obtained from the analysis result.

The attribute selection unit 110 selects three attributes to be assigned to each axis of the radar chart 55 from among a plurality of attribute candidates (BPM, KEY, ITEM, VOLUME, TITLE, etc. described above). In other words, the attributes assigned to each axis can be customized according to user preferences. Note that the number of selectable attributes may be an arbitrary number (however, three or more). In this case, the number of axes of the radar chart 55 varies according to the number of selected attributes (see FIG. 11A). The attributes that can be selected by the attribute selection unit 110 may be one or two of the three axes, and the attributes assigned to the remaining axes may be fixed.

The parameter acquisition unit 120 acquires the attribute parameters of the selected preceding music and subsequent music from the parameter storage unit 210. In this case, the attribute parameter may be acquired only for the attribute selected by the attribute selection unit 110. For the attribute “KEY”, the main KEY parameter of the music (the most frequently detected KEY or the KEY of the chorus portion) is acquired. Also, for the attribute “BPM”, the main BPM parameter (the most frequently detected BPM or the rust portion BPM) of the music is acquired. For the attribute “VOLUME”, the VOLUME average value or the maximum value, intermediate value, minimum value, or VOLUME of the chorus portion of the music is acquired.

The radar chart rotation operation unit 130 rotates the radar chart 55 by operating the “R” key, for example. In the present embodiment, as shown in FIG. 5, each axis is rotated by 120 ° every time a predetermined key (for example, “R” key) is pressed.

The reproduction candidate display unit 140 displays music options of a plurality of pieces of music stored in the content storage unit 220 as reproduction candidates (music selection area Ec). Further, according to the sort instruction by the user (for example, pressing the “S” key), the attribute mix degree of the attribute (hereinafter referred to as “vertex attribute”) assigned to the axis located at the vertex of the radar chart 55 is followed. Display in order. For example, in the example of FIG. 2, since the vertex attribute is “BPM”, the music options are arranged in the order of the BPM “100.000” of the music being played back. When the vertex attribute is “KEY”, the KEYs are arranged in order from “BM”. That is, the music choices in the reproduction candidate display unit 140 are arranged in descending order of the attribute mix degree of the vertex attribute. Accordingly, even when the vertex attribute is “ITEM”, the attribute mix degree of “ITEM” is arranged in descending order. The ascending order and descending order of the array may be switched. Further, the sort instruction (pressing the “S” key) by the user may be unnecessary by performing the sort by the reproduction candidate display unit 140 using the operation by the radar chart rotation operation unit 130 as a trigger.

The content selection unit 150 selects the preceding music and the subsequent music (the music to be reproduced next) from the reproduction candidates displayed on the reproduction candidate display unit 140. The content reproduction unit 160 reproduces the selected music piece.

The fitness determination unit 170 determines the attribute mix degree of the subsequent music with respect to the preceding music. Specifically, the determination is made based on the relative values of the attribute parameters of these two music pieces. As shown in FIG. 4, the attribute “BPM” may be calculated from the degree of coincidence or difference between the BPMs of two music pieces. For example, if the BPM difference is 1.0 or less, 10 points are assigned, and if the BPM difference is greater than 1.0 and 2.0 or less, the attribute mix degree is calculated as a table. good. In addition, in the case of the attribute “KEY”, if the KEYs of two music pieces are the same key, the score is 10 points, and in the case of the Major / Minor relationship, the score is 8 points and 5 degrees shifted (both sides on the fifth degree range) and 6 points. You may calculate from a table like a point. Further, in the case of the attribute “ITEM”, for example, +2 points when the artists of the two songs match, +2 points when the genres match, +2 points when the composers match, and when the age is close (for example, 1 Within the year), the attribute mix degree may be calculated by adding a score for each attribute item, such as +2.

Also, in the case of the attribute “VOLUME”, it is conceivable to calculate from the degree of coincidence or difference between the two music pieces. In the case of the attribute “TITLE”, it may be calculated from the matching degree or difference of the title names by character analysis. For example, +2 points when the same word is used in the title names of two music pieces, and +1 point when highly related words (for example, “winter” and “snow”) are used. In addition, the attribute mix degree may be calculated by adding a score based on the collation result of each word when the title name is divided into phrases.

The fitness level display unit 180 displays, on the radar chart 55, the attribute mix level of each attribute determined by the fitness level determination unit 170 as the inter-music mix level (inter-content fitness level) of the subsequent music with respect to the preceding music. Further, when the rotation operation is performed by the radar chart rotation operation unit 130, the radar chart 55 is rotated and displayed according to the operation.

Next, the flow of the mix reproduction process will be described with reference to the flowchart of FIG. First, the PC 10 (control unit 15) registers music information in the storage unit 16 (S01). In addition to the music file, the music information includes attribute parameters for each attribute shown in FIG. As the attribute parameter, the one added to the music file when the music is sold or downloaded may be registered, or the analysis result of the music file by the dedicated application 20 may be registered. Furthermore, the user may edit the attribute parameter (the attribute parameter edited by the user may be registered).

Subsequently, the preceding music is selected (S02). The selection of the preceding music is based on the user's operation as described above. The music selected here is the target of the mix degree determination (comparison of attribute parameters) as the preceding music. Thereafter, the selected preceding music is played (S03).

Subsequently, the subsequent music is selected (S04). Subsequent music selection is also based on user operations. Thereafter, the attribute parameters of the preceding music and the succeeding music are acquired from the storage unit 16 (S05), and the attribute mix degree of the preceding music and the following music is determined (S06). In the present embodiment, the attribute mix degree is calculated by comparing the attribute parameters of the two music pieces for the three attributes assigned to each axis of the radar chart 55. The calculated attribute mix degree is displayed in the mix degree display area Eb (the calculated attribute mix degree is reflected on the radar chart 55, S07).

Thereafter, when the user presses the enter key (S08: Yes), the selected music is determined as the subsequent music (S09), and mixing with the preceding music is performed (S10). Thereafter, the process returns to S03, and the selected succeeding music is reproduced as the preceding music. If the user sees the attribute mix degree (radar chart 55) displayed in S07 and determines that it is not appropriate as the subsequent music, the user does not press the enter key (S08: No) and returns to S04. Select another song.

As described above, according to the first embodiment, when the subsequent music is selected, the attribute mix degree with respect to the preceding music is displayed, so that the user can determine at a glance whether the selected music is suitable for the mix. Moreover, since the attribute mix degree is displayed for a plurality of attributes, it is possible to confirm in which attribute the mix is suitable.

Also, since the attribute mix degree of each attribute is displayed by the radar chart 55, the mix degree can be shown to the user in a more easily understandable manner. Further, it is possible to display the parameters of a plurality of attributes in an easy-to-understand manner instead of the parameters for one attribute as in the prior art. In addition, the area within the polygon of the radar chart 55 can indicate a comprehensive evaluation of a plurality of attribute mix degrees, and can be determined using figures rather than simply comparing numbers. Can be done quickly. In addition, since an attribute to be assigned to each axis of the radar chart 55 can be selected according to the user's preference and usage, it is possible to search for a song desired by the user more quickly. Further, since the sorting condition of the music selection area Ec can be switched by the rotation operation of the radar chart 55, it is easy to use.

In the first embodiment, an example in which a plurality of attribute mix degrees are displayed using a radar chart has been described. However, a display using a shape such as a graphic or graph (including a radar chart) or a numerical display using a score may be used. Moreover, the display form of these shapes, a combination of point display and color may be used.

In the above embodiment, the attribute mix degree is determined based on the parameters stored in advance. However, for the music being played, the parameters of the playback section including the playback point currently being played back are dynamically set. You may get to. For example, it is conceivable to dynamically determine the attribute mix degree according to the current BPM, KEY, VOLUME, etc. of the music being played. According to this configuration, in the case of “I want to perform mix playback now”, it is possible to find a subsequent music more suitable for the playback section.

Also, when the adjustment range of the playback speed can be varied, the BPM attribute mix degree may be determined according to the range. For example, if the tempo setting t can be switched between 4%, 6%, 10%, 16%, and 100%, the number of points depends on which range the multiplication value of the BPM of the preceding music and the setting value t is within. It is possible to attach. According to this configuration, a more appropriate BPM mix degree can be calculated according to the tempo setting.

In addition to the attributes such as “BPM” and “KEY” described above, attributes indicating musical elements (number of instruments, instrument type, presence / absence of vocals / gender / voice quality, rhythm pattern, presence / absence of strings, horn section, etc.) ) And attributes indicating peripheral information (whether or not belonging to a specific label, keyword / keyphrase matching degree, etc.) may be added as attribute candidates. Of these, for “keyword / key phrase”, the attribute mix degree may be determined from character analysis of the lyrics.

In the above-described embodiment, the music file and the music accompanying information (parameter) are both stored in the storage unit 16, but may be stored in different areas. For example, the PC 10 may be configured to be able to communicate with a first database that manages music files and a second database that manages music accompanying information, and acquires necessary information from each database.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. In the first embodiment, the degree of mixing between songs is determined based on the main BPM parameter and KEY parameter of each song. In this embodiment, mixing is performed based on attribute parameters in a partial section of each song. The degree is determined. Only differences from the first embodiment will be described below. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Moreover, the modification applied about the component similar to 1st Embodiment is applied similarly about this embodiment.

In the present embodiment, the parameter acquisition unit 120 acquires parameters in partial sections of the preceding music and the subsequent music. The partial section is a mix target section for performing mix reproduction. Further, the PC 10 of this embodiment has a configuration in which a section specifying unit (not shown) is added to the functional configuration of the first embodiment (see FIG. 3). The section designating section designates the end point of the partial section, and the operation section 12 is a main section.

FIG. 7 is an explanatory diagram of a section specifying operation according to the second embodiment. The upper waveform indicates the preceding music, and the subsequent waveform indicates the subsequent music. Also, the bold line extending vertically on the left side of the figure indicates the current playback position, “Output” indicates the output section, “Mix Output” indicates the mix target section, and “No Output” indicates the non-output section. Hereinafter, the flow of the section specifying operation will be briefly described. In addition, prior to the section specifying operation, it is assumed that analysis processing (analysis of music feature values such as chord progression, melody, and song development) is completed by the dedicated application 20.

First, the user sets the mix point of the preceding music and the succeeding music on the browse. That is, referring to the browse display as shown in FIG. 7, the first “Cue Point” that is the end point of the partial section in the preceding music and the second “ Set “Cue Point”. As specific operations, each waveform is slid left and right, and each point position (inverted triangle mark) is moved left and right.

When this setting is completed, the PC 10 synchronizes the BPM of the preceding music and the subsequent music. Further, in consideration of BPM and the like, the third “Cue Point” that is the start point of a partial section in the subsequent music is automatically set by the PC 10. The mix target section is determined by the above steps. Thereafter, the PC 10 determines the degree of mixing in each of the sections to be mixed of the preceding music and the subsequent music, and displays the radar chart 55 in the mixing degree display area Eb. That is, when “BPM” or “KEY” is specified as the attribute, the attribute mix degree is determined and displayed based on the BPM parameter and the KEY parameter in the mix target section. In addition, when it determines with the setting of a mix object area being inappropriate based on the determined attribute mix degree (when any attribute mix degree is below a predetermined value, the polygonal area of the radar chart 55 is below a predetermined value) It is preferable to display a message to that effect (such as a message or warning mark).

When the user decides the mix target section, press the Enter key to start the automatic mix. The PC 10 starts counting down a few seconds before the third “Cue Point” of the subsequent music (such as 10 seconds before) or a few beats before (such as 16 beats), and the playback position becomes the third “Cue Point”. Start playing the mix.

As described above, according to the second embodiment, in order to determine the attribute mix degree for a specified partial section (mix target section), it is more appropriate for music whose BPM changes or modulates in the middle. The attribute mix degree can be displayed. Moreover, according to the user's preference, the mix target section can be designated by a simple operation.

In the second embodiment, the end point of a partial section of the preceding music and the succeeding music is specified. However, the start point may be specified. In addition, the third “Cue Point” may be set manually instead of being set automatically. Furthermore, the length of the mix target section may be a fixed value.

Also, when the user specifies the mix target section, the mix target section may be specified for each measure. In this case, it is performed in units of 1 bar, 2 bars, 4 bars,... N bars (N> 1). Further, the unit of measure (value of N) may be arbitrarily designated by the user. For example, FIG. 8 shows a case where a mix target section is designated for each measure. As shown in the figure, a dividing line L is displayed on the preceding musical piece waveform and the subsequent musical piece waveform for dividing each waveform in units of one measure. After aligning the positions of the dividing lines L of the respective waveforms, the user designates the start point and the end point of the mix target section. According to this configuration, two music pieces can be connected without a sense of incongruity by adjusting the positions of the bars. In addition, when the lengths of the bar sections of the preceding music waveform and the subsequent music waveform are different, the corresponding bar sections are surrounded by rectangles so that the lengths of the bar sections are equal on the display (as shown by the dotted frame in the figure). To be adjusted). The dividing line L may be displayed in units of N beats (N ≧ 1). In this case, a synchronization process for matching the BPMs of the two music pieces to be mixed is performed.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS. In the first embodiment, the attribute mix degree is determined based on the relative value of the attribute parameter between music pieces. However, in the present embodiment, the attribute mix degree is determined with reference to a table based on the reproduction history. And Only differences from the first embodiment will be described below. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Moreover, the modification applied about the component similar to 1st Embodiment and 2nd Embodiment is applied similarly also about this embodiment.

FIG. 9 is a system configuration diagram of the display system SY according to the third embodiment. The display system SY includes a server 100 and a music playback device group (PC 10, smartphone 60, network compatible player 70, and music distribution server 80) connected to the server 100 via a network NT such as the Internet.

The server 100 has a playback history database 101 that stores the playback history of the music playback device group. Each music playback device transmits a playback log of the music to the server 100 for each music playback or at a predetermined timing. The server 100 also has a correspondence table 102 and a plurality of attribute tables 103 corresponding to the respective attributes such as an ARTIST table, a LABEL table, and a COMPOSER table.

As shown in FIG. 10A, the correspondence table 102 is a table in which the number of database recordings (the number of mix reproduction) and the attribute mix degree are associated with each other. As shown in FIG. 10B, the attribute table 103 is a table in which parameter combinations are associated with attribute mix degrees. For example, the ARTIST table defines the attribute mix degree for each artist combination. Similarly, the LABEL table defines the attribute mix degree for each combination of labels, and the COMPOSER table defines the attribute mix degree for each combination of composers.

In the examples in both figures, since the history (the number of times of reproduction) of the mixed reproduction of the parameter AB is 50 or more for an arbitrary attribute, the combination of the arbitrary attribute parameters of the preceding music and the subsequent music is A- In the case of B, it is determined that the attribute mix degree is “8”. In addition, since the history of mix reproduction with the combination of parameters AC is 9 or less, it is determined that the attribute mix degree is “2” for this combination. Similarly, the combination of the parameters BC is determined as the attribute mix degree “4”.

By the way, the server 100 according to the present embodiment has, as main functional configurations, a playback history acquisition unit (not shown) that acquires a playback history of music, and two or more parameters related to arbitrary attributes based on the acquired playback history. A table generation unit (not shown) that calculates an attribute mix degree between them and generates an attribute table 103. On the other hand, the fitness determination unit 170 of the PC 10 in the present embodiment refers to the attribute table 103 to determine the attribute mix degree. For example, when the attribute table 103 shown in FIG. 10B is stored in the server 100 as the ARTIST table and the combination of the ARTIST of the preceding music and the subsequent music is AB, the attribute “ARTIST” is used. Is determined to be “8”.

As described above, according to the third embodiment, even when an attribute such as “ARTIST” or “LABEL” cannot be quantified, the attribute mix degree can be determined only by referring to the attribute table 103. Further, since the attribute table 103 generated based on the reproduction history other than the PC 10 is used, it is possible to determine a standard mix degree that does not depend on personal preferences or the like.

In the third embodiment, the reproduction history acquisition unit and the table generation unit are realized in the server 100, but may be realized in the PC 10. In this case, the “display system” of the present invention can be realized only by the PC 10. Further, the third embodiment may be applied not only to attributes such as “ARTIST”, “LABEL”, and “COMPOSER” but also to attributes that can be expressed by numerical parameters such as “BPM” and “KEY”.

For attributes that can be expressed with numerical parameters, the attribute mix degree is determined based on the relative values of the parameters. For attributes that cannot be expressed with numerical parameters, the attribute mix degree is determined with reference to the attribute table 103. For example, different determination methods may be employed depending on attributes (a configuration in which the first embodiment and the third embodiment are combined) may be adopted.

Although three embodiments have been described above, the following modifications can be employed. For example, in the third embodiment, the attribute table 103 is automatically generated based on the reproduction history, but the attribute table 103 may be generated by the system administrator and stored in the server 100. For example, in the case of the attribute “ARTIST”, points are scored for each combination of ARTIST parameters, taking into account various factors such as whether or not they are simply matched, musicality is close, and they belonged to the same group. By preparing the attribute table 103, a more appropriate attribute mix degree can be determined.

In the first embodiment, the radar chart 55 having a three-axis configuration is illustrated (see FIG. 2). However, as shown in FIG. 11A, the radar chart 55 having a multi-axis configuration (shown, shaded pentagon). May be adopted. In addition, a polygon indicating the maximum value of the parameter on each axis (illustrated, white pentagon) may be displayed. Furthermore, the user can arbitrarily set the number of axes of the radar chart 55 (the number of polygon corners), the presence / absence of a polygon indicating the maximum parameter value, the arrangement of each attribute (the axis to which each attribute is assigned), and the like. good.

Further, instead of the radar chart 55, as shown in FIG. 11B, the attribute mix degree may be indicated by a bar graph for each attribute. In addition, as shown in the left graph of FIG. 12A, a single pie chart may represent a plurality of attribute mix degrees. Further, as shown in the left graph of FIG. 12B, a single bar graph may represent a plurality of attribute mix degrees. Also, the display form of the graph may be arbitrarily selectable by the user.

Further, as shown in FIGS. 12A and 12B, the first display form showing a plurality of attribute mix degrees in one graph and the total fitness obtained by adding these attribute mix degrees are 1. The second display form shown in the graph may be switchable. According to this configuration, when the user wants to check which attribute the mix is suitable for, the first display form is used. When the user wants to check the overall mix degree at a glance, the second display form is used. The display can be switched according to preference.

Further, as shown in FIG. 13, the attribute mix degree may be displayed in the music selection area Ec. In the example shown in the figure, a plurality of attribute mix degrees are indicated by a bar graph, and the inter-music mix degree is indicated by a numerical value. Each music option is arranged according to the degree of mix between music. In this case, the inter-music mix degree can be calculated based on the attribute mix degree of each attribute selected by the attribute selection unit 110. For example, it may be a value obtained by summing a plurality of attribute mix degrees, or may be a value indicating an area when displayed as the radar chart 55. According to this configuration, a plurality of attribute mix degrees can be displayed for each piece of music that is a reproduction candidate. Thereby, since the mix degree of the some reproduction | regeneration candidate with respect to a preceding music can be compared simultaneously, a desired music can be searched more rapidly.

In each of the above embodiments, the degree of mixing between two pieces of music is determined, but the degree of mixing between three or more pieces of music may be determined. In this case, for example, the mix adaptability of the B song and the C song for the A song may be determined between three songs, respectively, or the mix when the A song, the B song, and the C song are mixed. The fitness may be determined.

In each of the above embodiments, the degree of mixing is determined as the degree of fitness when mixing two pieces of music. However, the degree of fitness may not necessarily be based on mixing. For example, the compatibility when playing a plurality of songs simultaneously or the compatibility when playing a plurality of songs continuously may be displayed as “inter-content fitness”.

Also, in each of the above embodiments, it is important to present the degree of mixing between songs to the user, but not only a specific numerical value is shown, but if the degree of mixing is a predetermined value or more, “this song is a mix Even if a message such as “This song is not suitable for mixing” is displayed, such as when a message such as “Suitable for mixing” is displayed, or when the degree of mixing is below a predetermined value, good.

Also, it is possible to provide each function of the PC 10 and the server 100 shown in the above embodiment as a program. Further, the program can be provided by being stored in various storage media (CD-ROM, flash memory, etc.). That is, a program for causing a computer to function as each function of the PC 10 and the server 100 and a storage medium storing the program are also included in the scope of the right of the present invention.

In the above-described embodiment, the case where the present invention is applied to the PC 10 (file music player) is exemplified. However, the present invention may be applied to audio equipment, and content other than music (for example, video, image, text, or The present invention can also be applied to a playback device and a search device that play back content that is a combination of these.

Further, in each of the above embodiments, the case where the present invention is realized by the PC 10 is illustrated, but the main part of the present invention may be realized by a server on the network. In this case, the display system of the present invention can be realized by a server and a user terminal connected to the server via a network. In this case, a communication means with the display part 11, the operation part 12, and a server becomes a required component in a user terminal. The present invention can also be applied to cloud computing. Other modifications can be made as appropriate without departing from the scope of the present invention.

10 ... PC 11 ... Display unit 12 ... Operation unit 13 ... External storage device I / F unit 14 ... Communication unit 15 ... Control unit 16 ... Storage unit 17 ... Reproduction processing unit 18 ... Audio output unit 19 ... Bus 20 ... Dedicated application 30 ... External storage device 51 ... Artwork display area 52 ... First music information display area 53 ... Second music information display area 55 ... Radar chart 57 ... Reduced artwork 60 ... Smartphone 70 ... Network compatible player 80 ... Music distribution server DESCRIPTION OF SYMBOLS 100 ... Server 101 ... Playback history database 102 ... Correspondence table 103 ... Attribute table D0 ... Operation screen Ea ... Playback music display area Eb ... Mix degree display area Ec ... Music selection area NT ... Network SY ... Display system

Claims (15)

A display system that displays inter-content fitness of two or more contents,
A parameter acquisition unit that acquires parameters for a plurality of attributes for the two or more contents;
Based on the acquired parameters for each attribute, an fitness determination unit that determines an attribute fitness that is the fitness for each attribute;
A display system comprising: a fitness display unit that displays a plurality of the attribute fitness determined for each attribute as the inter-content fitness. The display system according to claim 1, wherein the fitness display unit displays the plurality of attribute fitness by a shape, a score, or a combination of them and a color. The display system according to claim 2, wherein the fitness display unit displays the plurality of attribute fitness in the form of a radar chart. A reproduction candidate display unit that sorts and displays a plurality of contents to be reproduction candidates in an order according to any one of the plurality of attribute fitness values;
A radar chart rotation operation unit for rotating the radar chart,
The reproduction candidate display unit sorts and displays the plurality of contents according to the attribute fitness of an attribute assigned to an axis extending in a predetermined direction from the center of the radar chart. Display system described. An attribute selection unit that allows the user to arbitrarily select the plurality of attributes from among a plurality of attribute candidates;
The display system according to claim 1, wherein the parameter acquisition unit acquires the parameters for a plurality of attributes selected by the attribute selection unit. A content selection unit for selecting content to be reproduced next from the plurality of contents displayed on the reproduction candidate display unit;
The display system according to claim 4, wherein the fitness determination unit determines the attribute fitness of the content to be reproduced next with respect to the content being reproduced. The display system according to claim 1, wherein the parameter acquisition unit acquires parameters in a partial section of each of the two or more contents. The display system according to claim 7, further comprising a section designating unit that designates the partial section for each content. The partial section is a section to be mixed in which the two or more contents are mixed and played back,
The display system according to claim 8, wherein the section specifying unit specifies a start point or an end point of the partial section for each content. A playback history acquisition unit for acquiring a playback history of the content;
A table generation unit that calculates and tabulates the attribute fitness between two or more parameters related to an arbitrary attribute based on the reproduction history;
The display system according to claim 1, wherein the fitness determination unit determines the attribute fitness by referring to the table. The display system according to claim 1, wherein the fitness level display unit displays the plurality of attribute fitness levels and a combined fitness level obtained by adding the plurality of attribute fitness levels in a switchable manner. A display control apparatus for displaying inter-content fitness of two or more contents,
A parameter acquisition unit that acquires parameters for a plurality of attributes for the two or more contents;
Based on the acquired parameters for each attribute, an fitness determination unit that determines an attribute fitness that is the fitness for each attribute;
A display control apparatus comprising: a display control unit configured to display a plurality of the attribute fitness determined for each attribute on the display screen as the inter-content fitness. A display system according to any one of claims 1 to 11, or a display control device according to claim 12,
An audio device comprising: a content reproduction unit that reproduces the content. A display method for displaying inter-content fitness of two or more contents,
A parameter acquisition step of acquiring parameters for a plurality of attributes for the two or more contents;
A fitness determination step for determining an attribute fitness that is a fitness for each attribute based on the acquired parameter for each attribute;
And a fitness display step for displaying a plurality of the attribute fitness determined for each attribute as the inter-content fitness. A program for causing a computer to execute each step in the display method of claim 14.

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