RU67885U1 - INSTALLATION SYSTEM IN THE SPACE OF ROOM OF VOLUME EFFECTS (OPTIONS) - Google Patents

Abstract

The utility model relates to the field of acoustic means. The installation system in the space of volumetric effects includes a spatial sound reproduction device, including a five-channel amplifier with five channels with a full frequency range and one low-frequency channel with a range from 3 to 120 Hz, the outputs of which are connected respectively to the central and front acoustic units with speakers located in front of the listener's location, to the rear acoustic units with speakers located behind the listener's location, and to the subwoofer with speakers com, and a device for generating a holographic image above the listener’s location, including a projection unit and a transparent film screen for demonstrating a holographic image, which is configured to move in three coordinates above the listener’s location while maintaining the holographic image unchanged, acoustic blocks of the spatial sound reproduction device directed towards the holographic image to direct the sound wave from each this of the block in a zone of the holographic image and the compound of the sound waves from these blocks in this area, wherein acoustic units sound spatial reproducing apparatus mounted with respect to the listening location to be movable along three axes to maintain the compound of the sound waves from these units in the holographic image area. 1 ill.

Description

The utility model relates to the use of acoustic means in stage activity and can be applied when playing film effects, music and speech, during show events, etc. When using this system, a surround sound effect is created that actively affects the psychophysiological state of a person, enhanced by visually reproducible images or a game of color.

A device for generating a stereo sound field containing a monophonic sound source, delay units of an audio signal and mixing units of a monophonic signal with delayed signals JP, application No. 61-50440, H04S 5/00, publ. 11/04/86).

By choosing a delay time and a phase shift, you can achieve a satisfactory sound, however, the known device is notable for its design complexity, the generated sound field is not consistent with the psychoacoustic characteristics of a person, the system shunts biologically valuable parameters of live speech and music due to phase distortions. In such systems, a stereophonic sound field formed by direct compression waves reproduces the volume of the sound timbre only at some spatial points of the “optimal sound”.

A known acoustic system containing a sound source, an amplifier and an electro-acoustic transducer that performs the functions of a resonator. The resonator contains a housing, a series of loudspeaker heads that form pairs connected in-phase and located opposite radiating surfaces at a distance determined by the minimum frequency of this pair, and the system as a whole faces an opening into the listening area. The smallest distance between the surfaces of the speakers - emitting - is chosen equal to the characteristic diameter

human head. When reproducing sound, the signal through the amplifier is fed to the in-phase loudspeakers, which, due to the varying distance between adjacent pairs, form a part of the front of the spherical wave, which gives a high degree of diffusion of the sound field and the volume of the sound picture perceived by the listener. To create equivalent conditions for reproducing a signal at different frequencies, it is necessary to establish at least three pairs of emitters, since each pair of emitters is a resonator whose natural resonant frequency is determined by the distance between the elements of the pair. For a pair of emitters with the smallest base, the fundamental frequency is set near 1760 Hz, in other links the fundamental frequencies are lower than this value / SU No. 936462, Н04S 5/00, 1982.06.15).

The known system is taken as the closest analogue of the proposed resonant speaker system.

The well-known sound system is characterized by good sound quality, surround sound. However, the system is distinguished by cumbersomeness, high requirements for the identity of the emitters in a pair, distortion of the frequency response - a cut at high and low frequencies. It is also difficult to achieve a symmetrical spatial pattern, which is a significant drawback of the device.

The considered spatial sound systems belong to stationary sounding systems, that is, when the system components are fixed motionless and are configured to combine sound waves from acoustic blocks in a given area. For example, when using 5.1 surround sound system (US 2004008847, US 2001038702, US 5666424, WO 03092260), the rear speakers are placed behind the listener with the sound stream facing towards the center and front speakers located in front of the listener. Surround sound reproduction systems were developed because the sound quality realized by a conventional stereo system or head phones ceased to satisfy discerning listeners. Although stereo systems create a spatial sound effect due to the synthesis of imaginary panoramas

sound sources between multiple speakers, yet stereo sounding has a significant drawback. The stereo panorama is flat and limited by the angle between the directions to the speakers. Such sounding is largely devoid of the naturalness characteristic of what is achieved in a real sound field, when a person is able to perceive real sources from almost all directions in both horizontal and vertical planes and evaluate, although sometimes with errors, the distance to sound sources. It is believed that the perception of sounds from different directions and distances is important not only as a fact of their spatial location. It gives the listener a sense of sounding volume (three-dimensional sound field), significantly enriches the timbres of musical instruments and voices, restoring the reverb process inherent in the primary room (concert hall). Ordinary stereophony creates the effect of spatial sound in a very limited area in front of the listener, does not allow to fully identify the above-mentioned features of the perception of sounds in a real sound field and, therefore, reduces the sound quality.

This utility model is aimed at solving the technical problem of generating the effect of spatial ambient (surround) sound, repeating 5.1 surround sound, while amplifying the sound picture with a holographic effect, in the area of which sound waves are added.

The technical result achieved in this case consists in increasing the efficiency of the presentation of sound compositions and enhancing the psychological impact on the listener during the demonstration of the material.

The specified technical result for the first embodiment is achieved by the fact that the installation system in the space of volumetric effects, comprising a spatial sound reproduction device, including a five-channel multichannel amplifier with a full frequency range and one low-frequency channel with a range from 3 to 120 Hz, the outputs of which connected respectively to

the central and front acoustic units with speakers located in front of the listener location, to the rear acoustic units with speakers located behind the location of the listener, and to the subwoofer with speaker, is equipped with a holographic imaging device above or in front of the listener, including a projection installation and a transparent film screen for demonstrating a holographic image, while the specified film screen is made with the ability to move through t To the coordinates above the listener’s location or in front of him, while maintaining the holographic image unchanged, the acoustic blocks of the spatial sound reproduction device are directed towards the holographic image to direct the sound wave from each of this blocks into the holographic image zone and connect the sound waves from these blocks in this zone, acoustic blocks of the device for spatial reproduction of sound are installed in relation to the location of the listener with the possibility eremescheniya along three axes to maintain the compound of the sound waves from these blocks in a zone of the holographic image.

The specified technical result for the second embodiment is achieved by the fact that the installation system in the space of volumetric effects, comprising a spatial sound reproduction device, including a five-channel multichannel amplifier with a full frequency range and one low-frequency channel with a range from 3 to 120 Hz, the outputs of which connected respectively to the central and front acoustic units with speakers located in front of the listening position, to the rear acoustic units The speaker with speakers located behind the listener’s location and to the subwoofer with a speaker is equipped with a holographic imaging device above the listener’s location, which includes a projection unit and a gas or dust medium artificially created in the air to demonstrate the holographic

image above the listener’s location or in front of him, while the acoustic blocks of the device for spatial reproduction of sound are directed towards the holographic image to direct the sound wave from each of this block into the zone of the holographic image and connect the sound waves from these blocks in this zone, the acoustic blocks of the device for spatial reproduction sound set in relation to the location of the listener with the ability to move in three coordinates to maintain the connection sound waves from these blocks in the holographic image area.

Moreover, for both versions, the system can be additionally equipped with a color-music installation for generating colored light rays in the direction of a holographic image or surfaces of the room, and in this installation, each color of the visible light spectrum corresponds to a given frequency range of sound.

These features are significant and are interconnected with the formation of a stable set of essential features sufficient to obtain the desired technical result.

The present utility model is illustrated by a specific example of execution, which, however, is not the only possible one, but clearly demonstrates the possibility of achieving the required technical result.

The proposed system is shown in the drawing, where Fig. 1 shows a diagram of an installation system for volume effects in a space of a room.

According to both versions, the installation system in the space of the volumetric effects (Fig. 1) contains a device for spatial sound reproduction, including in the multi-channel amplifier 1 for at least five channels with a full frequency range and one low-frequency channel with a range from 3 to 120 Hz, outputs which are connected respectively to the central 2 and front acoustic units 3 and 4 with speakers located in front of the listener’s location, to the rear acoustic units 5 and 6 with speakers,

located behind the listener's location or on the side of it, and to the subwoofer 7 with a speaker.

As such surround sound systems, Dolby Digital can be used - a digital coding and recording system for multi-channel surround sound (formerly Dolby Surround AC-3), which has six separate channels - five channels with a full range and a low-frequency channel, that is, the system corresponds to the format 5.1. The Dolby Digital encoder accepts digital data with a sampling frequency of 32, 44.1 or 48 kHz and a resolution of 16, 18 or 20 bits (see US 2004008847, US 2001038702, US 5666424, WO 03092260).

The system is supplemented by a device for forming a topographic image above or in front of the listener, which includes a projection unit 8 and a gas or dust medium artificially created in the air to demonstrate the topographic image. The gaseous medium is formed due to the emission of fog or cloud above the listeners' location, the transparency of which differs from the air and has visibility. The dust medium can be formed due to the emission of dust particles into the air. Both methods are based on the formation of clouds in the air with a certain reflectivity, which allows you to see a holographic picture in the air. But such clouds are not durable, however, this is enough to create a short-term illusion. The holographic image can move around this cloud, and can remain static with the movement of the zone of combination of sound waves in this image.

A feature of the claimed system is that the acoustic blocks of the device for spatial reproduction of sound are directed towards the holographic image to direct the sound wave from each of this block to the zone of the holographic image and connect the sound waves from these blocks in this zone, while the acoustic blocks of the device for spatial reproduction of sound are installed in relation to the location of the listener with the ability to move in three coordinates

to maintain the connection of sound waves from these blocks in the area of the holographic image.

Acoustic blocks can be installed on the lever systems, and their movements are carried out from the actuators 9, changing the position of the links of the lever system and thereby ensuring their movement up and down, left and right. In this case, between the operation of the drives, the control is interconnected by the dependent position of one acoustic unit from the position of other units. This connection is necessary to ensure the safety of the connection of sound waves from all blocks in the area of the holographic image when moving each acoustic unit in a certain area along the location of its attachment. The mutual position and movement of the speaker systems is controlled through a coordinate controller 10, in which the initial screen coordinates for the holographic image and the algorithm for its movement are fixed, for example, with discrete screen position coordinates during this movement. Also in the controller 10, the coordinates of the position of all acoustic blocks are fixed with respect to the screen. The algorithm of the controller is configured to provide changes in the coordinates of the position of the acoustic units relative to the screen while maintaining the angular direction of the sound wave to the screen and the distance between each acoustic unit and the screen at which sound waves are added to form a standing wave in the screen area.

The acoustic system provides for the use of a mixer for mixing in the format of multi-channel surround sound and the formation of special means for panning sound. The mixer, when working to place the sound in a certain place, determines how much sound is supplied to each channel and, thereby, determines its imaginary position between the two speakers, that is, it determines how much sound is delivered to each of the five main channels (not taking into account the subwoofer channel )

The volume of sound is determined by the psychoacoustic features of the perception of sound by a person. As a rule, sound waves, reflected from various obstacles, reach us in a somewhat distorted form (the amplitude of the oscillations, etc.). Moreover, each ear picks up sound at different time intervals. Processing the individual audio signals by the brain allows us to determine which side of us and at what distance the source is. However, if the direction of sound (sound wave radiation) is not directed directly to the listener, then the corrected sound signal for the rear acoustic units, hitting an obstacle that may be the wall of the room, changes its direction, moves along the wall and, reflected from other obstacles, is perceived the ear of the listener as a sound coming from outside without specifying the place of the yoke of the initial radiation. In other words, an audio signal, different from similar signals for other acoustic units, comes to the listener not directly, but through a series of transformations-reflections. Such a “deception” of the listener recreates new sound tones in the general sound stream, perceived by the ear as coming “from the side”.

These findings are supported by studies for spatial reproduction systems in the 5.1 standard (ITU-R B.775-1). Conducted to analyze the influence of the limitations of the high-frequency part of the range on the overall sound impression while simultaneously perceiving the video image. Subjective examinations showed that for some types of program material, a certain limitation in the rear channels at high frequencies (with a cutoff frequency of 10 kHz) can be allowed without a significant deterioration in the overall sound experience. Moreover, the presence of a video image does not significantly affect the assessment of sound quality under such restrictions (J. “Sound Engineer”, article by Irina Aldoshina “112 AES Convention in Munich. Scientific Results. Part 2”, No. 07, 2002).

In the system of FIG. 1, a holographic image above or in front of a listener’s location can be formed onto a transparent

a film screen, configured to move in three coordinates above the location of the listener or in front of him with keeping the holographic image unchanged.

As such transparent film screens, you can use Holo Screen screens (40`` ... 60 '') - a holographic screen made on the basis of a transparent acrylic sheet with a thin layer of holographic microlenses. The image received on the screen seems completely transparent, which creates the effect of a moving picture hanging in the air. Thanks to the use of unique holographic microlenses, the image on the screen does not lose its brightness even in high ambient light. You can use screens made using AirSho technology - this is a technology in which a polymer film created using a special technology similar to the technology for producing holograms is sandwiched between two protective layers of a polymer film. In a special way, it refracts light from the projector directed at it at an angle of 35 degrees. From other angles, this film remains completely transparent.

You can use an inverted pyramid with four faces made of a transparent material as a screen. The width of the base of the pyramid can be different - from 1.5 to 30 meters. Inside the pyramid, as if right in the air, three-dimensional images float - video or computer graphics. The official explanation of the principle of the system: the holographic effect is achieved due to the fact that the pyramid is used as a kind of prism that collects the light from four video projectors hidden at the bottom of the installation. And three-dimensionality appears due to reflections (http://www.profile.org.ua/index.php?area=press&groupid=1&publicationid=1907).

The system can be supplemented with a color-musical installation for the formation of colored light rays in the direction of a holographic image or room surfaces, while in this installation each color of the visible light spectrum corresponds to a given frequency range of sound. Color components can be formed into

depending on the frequencies of the musical work or to have independent performance.

The installation system in the space of the room of volumetric effects operates as follows. Indoors, above the listener's location or in front of him, a holographic image is formed on the demonstration screen, which for the listener appears to be hanging in the air. At the same time, this image can move in a certain area. From the side of the acoustic units, in the direction of the moving topographic image, sound waves are sent that are summed precisely in the image area with receiving surround sound, the center of which is on or in the image. When you move the image in a certain area, the sound begins to accompany this image, which is perceived by the listener as a volume moving in space sound. Since the action is carried out in front of the listeners in the immediate vicinity of them, practically the listeners are in the center of the surround sound, but with the possibility of visual perception of the image. Such a complex effect on the listener leads to the fact that the listener is in the center of the action. Such a system works well on the local area of the room and naturally cannot cover a large hall without loss of quality and image (up to 30 m) and surround sound. Therefore, in large rooms above each local zone of this room, such a system should be formed. Surround sound in large rooms will be formed, as it were, at several points and work for the part of the audience exactly the one that is in the immediate area under the demonstration screen.

This utility model is industrially applicable and can find application as a new type of sound and demonstration equipment for venues for shows, exhibitions, concerts, movie shows, etc.

Claims (4)

1. The installation system in the space of the room of volumetric effects, comprising a spatial sound reproduction device comprising a multichannel amplifier with five channels with a full frequency range and one low-frequency channel with a range of 3 to 120 Hz, the outputs of which are connected respectively to the central and front acoustic units with speakers located in front of the listener’s location, to the rear acoustic units with speakers located behind or on the side of the listener’s location, and to a subwoofer with a speaker, characterized in that it is equipped with a holographic image forming device above or in front of the listener, including a projection unit and a transparent film screen for demonstrating a holographic image, wherein said film screen is arranged to move in three coordinates above the listening position of the listener or in front of him with keeping the holographic image unchanged, the acoustic units of the spatial reproducing device Sound waves are directed towards the holographic image to direct the sound wave from each of this block to the holographic image zone and connect the sound waves from these blocks in this zone, the acoustic blocks of the spatial sound reproduction device being installed with respect to the location of the listener in three coordinates to maintain the connection of sound waves from these blocks in the area of the holographic image. 2. The system according to claim 1, characterized in that it is additionally equipped with a color music installation for generating colored light rays in the direction of a holographic image or surfaces of the room, wherein in said installation each color of the visible light spectrum corresponds to a predetermined sound frequency range. 3. The installation system in the space of volumetric effects, containing a device for spatial reproduction of sound, including in a multi-channel amplifier for five channels with a full frequency range and one low-frequency channel with a range from 3 to 120 Hz, the outputs of which are connected respectively to the central and front acoustic units with speakers located in front of the listener’s location, to the rear acoustic units with speakers located behind or on the side of the listener’s location, and to a subwoofer with a speaker, characterized in that it is equipped with a holographic imaging device above or in front of the listener, including a projection unit and a gas or dust medium artificially created in the air to produce a cloud for demonstrating a holographic static or moving in the cloud zone images, while the acoustic units of the device for spatial reproduction of sound are directed towards the holographic image for the direction of sound are each of this block into the holographic image area and the sound waves are connected from these blocks in this zone, the acoustic blocks of the spatial sound reproduction device are set with respect to the listener location with the ability to move in three coordinates to preserve the sound waves from these blocks in the holographic zone Images. 4. The system according to claim 3, characterized in that it is additionally equipped with a color music installation for generating colored light rays in the direction of a holographic image or surfaces of the room, wherein in this installation each color of the visible light spectrum corresponds to a given sound frequency range.