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EP2577987B1 - Dispositif haut-parleur à ouverture de sortie du son périphérique, en forme générale d'entonnoir - Google Patents

Dispositif haut-parleur à ouverture de sortie du son périphérique, en forme générale d'entonnoir Download PDF

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Publication number
EP2577987B1
EP2577987B1 EP11721529.3A EP11721529A EP2577987B1 EP 2577987 B1 EP2577987 B1 EP 2577987B1 EP 11721529 A EP11721529 A EP 11721529A EP 2577987 B1 EP2577987 B1 EP 2577987B1
Authority
EP
European Patent Office
Prior art keywords
sound
guiding channel
loudspeaker
loudspeaker device
sound guiding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP11721529.3A
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German (de)
English (en)
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EP2577987A1 (fr
Inventor
Frank Held
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Individual
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Individual
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns

Definitions

  • the invention relates to a loudspeaker device comprising at least one sound generating means, wherein in an Schallabstrahlraum of the sound generating means an at least partially sound conducting channel is arranged, which is adapted to direct the sound generating means emerging sound along the course of the sound conducting channel that the sound a trained as a sound outlet opening second end of the sound-conducting channel exits in a defined by the sound outlet beam angle from the speaker device.
  • Loudspeaker devices which radiate the generated sound omnidirectionally have long been state of the art.
  • a predominantly cone-shaped sound-reflecting medium is positioned in front of the sound generating unit in such a way that the radiated sound is reflected by the conical walls and radiated radially at a large angle about the axis of the cone axis.
  • This is used, for example, in sirens and alarm systems technical application.
  • corresponding devices are also advantageous for the transmission of speech and music, for example in the sound of large squares, halls, stadiums, shopping centers and the like. Accordingly, it is for example in the subject of the document DE 41 08 409 A1 provided to achieve at the same time with the omnidirectional radiation of the sound and a sound pressure gain. Accordingly, the sound-conducting Channels horny extended. This device is therefore also referred to as a ring horn.
  • GB 248,061 Another example of an omnidirectional radiating speaker is in GB 248,061 disclosed.
  • the object of the device disclosed therein is a loudspeaker, wherein the sound emitted by the latter - after the sound pressure has been amplified by a horn - impinges on a mushroom-like device which deflects the sound omnidirectionally.
  • a similar principle is in DE 10 2007 019 450 disclosed.
  • Subject of this document is an omnidirectional radiating and receiving horn.
  • a horn-like funnel neck is provided at the thinner end of the microphone or the speaker can be arranged.
  • a conical volume body connects, which together with the lower volume body forms a sound channel through which the sound is passed so that it can exit radially from the device.
  • An omnidirectional loudspeaker device which has a horn with an axial sound inlet opening and a radial outlet opening. It has a tweeter unit and an oppositely directed woofer unit. Furthermore, the subject of the GB 2 459 338 A preferably rotationally symmetrical with respect to the longitudinal axis.
  • the publication DE 4108409 A1 discloses a funnel-shaped structure called a ring horn for sounding a room as uniformly as possible.
  • the ring horn is placed in front of the sound-emitting membrane of a dynamic loudspeaker in order to distribute the sound emitted by it as far as possible radially around the sound source. It is thus a horn whose internal extent increases continuously over most of the sound path length.
  • GB 2 302 231 A discloses a speaker system in which the sound is passed through a straight channel from the sound source.
  • the channel widened over large parts of the sound path length and thus also acts as a horn to increase the sound pressure.
  • a variant of such a horn is disclosed in which the rear sound outlet openings are arranged, whereby a certain omnidirectional sound radiation is possible.
  • a speaker device includes at least one sound generating means, wherein in a Schallabstrahlraum of the sound generating means, an at least partially sound conducting channel is arranged, which is adapted to direct sound exiting the sound generating means along the course of the sound-conducting channel, that the sound on a trained as a sound outlet opening second End of the sound-conducting channel emerges in a defined by the sound outlet beam angle from the speaker device and wherein the sound-conducting channel on an inner wall sections, a predominantly sound-reflecting and partially a predominantly sound-absorbing material, or sections predominantly sound-reflecting and sections predominantly sound-absorbing.
  • the section-wise arrangement of predominantly sound-reflecting and predominantly sound-absorbing materials within the channel serves to reduce sound reflections. This reduces reflections between the sound-reflecting and sound-absorbing sections of the sound-conducting channel. As a result, the extended signal delays resulting from multiple reflections within the channel and the resulting in distortions and phase cancellations can be minimized, which in turn leads to an improved and clearer sound.
  • a cross-section of the sound-conducting channel over at least 50% of the length, preferably over at least the length 70%, more preferably over at least 80% of the length of the sound-conducting channel is designed to be consistent.
  • the inner boundary of the sound-conducting channel is a radially inner surface and the outer boundary is a radially outer surface which delimits the sound-conducting channel along its course.
  • substantially constant cross-section denotes that the distance between the radially inner surface and the radially outer surface remains largely constant along the course of the sound-conducting channel.
  • Deviations of less than 10% based on the change in the distance between radially inner surface and radially outer surface along the course in relation to the length of the channel, preferably less than 5%, more preferably less than 2%, particularly preferably less however, 1% is possible.
  • the cross-section of the sound-conducting channel is constant over as large a range as possible in order to avoid the disadvantages of horn-like channels.
  • a sound outlet which has a different cross-section of the sound-conducting channel cross section and thus defines a specific opening angle for the sound outlet. In this area extensions or constrictions are possible. It is also possible that in the region of the sound inlet opening of the constant cross-section is deviated.
  • the sound entrance opening becomes the width in this region of the sound-conducting channel only defined by the radially outer surface.
  • the upper and lower boundaries of the sound-conducting channel of the shape each follow a curve which corresponds to a section, preferably a quarter, a circle circumference or an ellipse circumference. This process minimizes sound reflections within the channel. If a largely horizontal radiation of the sound is desired, offers a horizontal orientation of the speaker and thus a predominantly vertical sound radiation in the one opening of the sound-conducting channel in combination with sound-conducting channels whose course corresponds exactly to a quarter of a circumference or an ellipse circumference. This is advantageous, for example, if the loudspeaker device is arranged at the level of the receiver or the listener.
  • the loudspeaker device is arranged at a different height, it is possible to provide courses of the sound-conducting channel which do not correspond to a quarter of a circumference or of an ellipse circumference, but are larger or smaller.
  • courses of the sound-conducting channel which do not correspond to a quarter of a circumference or of an ellipse circumference, but are larger or smaller.
  • the sound-conducting channel is as shorter as possible than exactly one quarter of a circumference or of an ellipse circumference.
  • the sounding channel is ideally longer than exactly one quarter of a circumference or an ellipse circumference to redirect the sound in the direction of the ground.
  • the length of the sound-conducting channel can be chosen arbitrarily and thus adapted to the respective environmental conditions.
  • the speaker device such as in the car HiFi and home entertainment area
  • shorter sound-conducting channels sufficient and advantageous for a homogeneous sound.
  • loudspeaker devices with a large radius and thus also long sound-conducting channels.
  • Such speaker devices can also be combined into line array systems. It is also possible to combine loudspeaker devices with sound conductors of different lengths and thus to irradiate different radiation angles over sounding channels of different lengths.
  • the predominantly sound-reflecting material is disposed within the sound-conducting channel on a radially inner surface and the predominantly sound-absorbing material within the sound-conducting channel on a radially outer surface.
  • Both the predominantly sound-reflecting material and the predominantly sound-absorbing material can completely cover over the respective surface or can be arranged only in certain sections on the respective surface. For example, in sections with a particularly tight curve radius.
  • Both the predominantly sound-reflecting material and the predominantly sound-absorbing material may be selected such that they have the respective property only for specific frequencies or frequency ranges. By a suitable distribution of, for example, for different frequency ranges predominantly sound-absorbing materials along the channel can be responded to particularly critical sound reflections in certain areas.
  • a sound inlet opening of the sound-conducting channel has an inner diameter which largely corresponds to an outer diameter of the loudspeaker and the sound inlet opening is in indirect contact with the loudspeaker.
  • Indirect contact in this context means that the sound inlet opening of the sound-conducting channel is connected via a sound-absorbing element such as a rubber ring to the baffle of the speaker, but is largely decoupled from this.
  • sound, which is emitted from the speaker passes directly through the sound inlet opening in the sound-conducting channel.
  • the flush connection of the channel to the outer boundary of the loudspeaker ensures that sound waves can enter the sound-conducting channel without further hindrance.
  • Dead volumes as they would arise at a larger sound inlet opening than the outer diameter of the speaker are avoided.
  • sound from the speaker is delivered directly to an outer wall of the sound-conducting channel, where unwanted reflections would occur.
  • the intermediate region may be open, for example, or be equipped with a predominantly sound-absorbing material.
  • Omnidirectionally radiating speaker device should serve primarily to give a listener everywhere in a room the best possible listening experience. Therefore, it makes sense that sound is emitted from the speaker device through a sound outlet opening in the largest possible angle horizontally to the environment.
  • a loudspeaker comprising the sound generating means is arranged largely horizontally, which emits sound generated at least partially vertically upwards or downwards.
  • the radiated sound can thus be deflected by the largely rotationally symmetrical sound-conducting channel, so that it leaves the loudspeaker device radially largely horizontally.
  • emission angles are also possible which deviate from the largely horizontal emission direction. However, even in this case, a horizontal position of the speaker and / or a vertical Schallabstrahlraum of the speaker is possible.
  • the loudspeaker device has at least two loudspeakers, wherein at least one of the sound radiates at least partially vertically upwards and at least one another radiates the sound at least partially vertically downwards and preferably at least two loudspeakers have a sound-conducting channel in the sound emission direction of the sound-generating means.
  • the two speakers and a woofer and a tweeter it is possible to arrange the sound sources heard by a listener, namely the sound outlet openings close to each other, so that ideally only a sound source can be identified by the listener and not between one Sound source for high tones and one for medium depth tones can be distinguished. This creates a very homogeneous sound.
  • the loudspeaker device is preferably configured in such a way that at least one sound-conducting channel is curved in such a way that sound emerges substantially horizontally from the sound outlet opening.
  • This embodiment is advantageous, for example, when the speaker device is part of a tower speaker (standing box) or possibly also a bookshelf loudspeaker.
  • a speaker device is not operated at the level of the listener but, for example, as a ceiling speaker, it is sometimes advantageous, as already described above, to reject this embodiment.
  • this may be an example of a guide of the sound-conducting channel, which corresponds to a curve that represents a larger portion than a quarter of a circumference or an ellipse.
  • the channel of the downwardly oriented loudspeaker In order to deliver the sound largely conically downwards through the sound outlet opening, the channel of the downwardly oriented loudspeaker should be smaller than a quarter of a circumference or an ellipse circumference. However, in order to ensure the same exit angle from the sound outlet opening in the upwardly directed sound generating means, in this a channel longer or more curved channel is necessary, which is greater than a quarter of a circumference or an ellipse circumference.
  • At least one sound-conducting channel is designed such that sound at an angle of at least 5 °, preferably at least 150 °, more preferably at least 180 °, particularly preferably at least 230 ° and particularly preferably at least 270 ° radially out of the sound outlet opening exit.
  • the sound outlet opening is opened substantially over the entire circumference.
  • the sound-conducting channel of the speaker device is designed such that sound exits substantially radially over the entire circumference of the sound outlet opening, be arranged in the sound-conducting channel and / or in a path that travels the sound after exiting the sound outlet opening, parts of the speaker device can, which hinder or change a direct sound leakage.
  • These parts of the speaker device which are arranged in the channel, in the sound outlet opening or in the Schallabstrahlraum, for example, be stabilizing elements that hold the cone-like element, which is the radially inner boundary of the channel.
  • other elements such as cable guides or the like can run through the channel or the sound outlet opening or be arranged in the Schallabstrahlraum.
  • the cable guides serve, for example, the supply of other speakers or sound generating means.
  • These may be power cables, fiber optic cables or other suitable cables. It is also possible to combine cable guides and stabilizing elements to common elements.
  • sound-absorbing materials in the sound-conducting channel in the sound outlet opening or in the Schallabstrahlraum targeted.
  • Such sound-absorbing elements make it possible, with the simultaneous operation of a plurality of such loudspeaker devices, to reduce negative sound effects which arise between the loudspeaker devices as a result of the possibly phase-shifted converging sound waves.
  • amplitude modulation such as a frequency cancellation in the area between the speakers are contained.
  • the particularly small angle of at least 5 °, in which the sound exits the sound outlet is preferably due to the targeted introduction of sound-absorbing materials in the sound-conducting channel.
  • the radially inner surface of the sound-conducting channel means on which at least partially allow a sound passage.
  • the sound-conducting channel has the same cross-section over a large part of its length, ie it does not widen or narrow.
  • a sound outlet opening it is possible for a sound outlet opening to adjoin the end of the sound-conducting channel, whose opening is broadened or narrowed relative to the sound-conducting channel.
  • a preferred embodiment of the loudspeaker device is therefore characterized in that the sound outlet opening is widened in relation to the sound-conducting channel.
  • the sound-conducting channel is arranged within a loudspeaker housing and the at least one sound outlet opening preferably constitutes an opening of the housing.
  • the sound-conducting channel in which the sound-conducting channel over a large part of its length has the same cross-section, thus neither widened nor narrowed, nor changes in the shape of the cross section and thus does not have the sound pressure enhancing effects of horn speakers, it may be necessary to increase the sound pressure by other means. It is therefore provided in a preferred embodiment of the loudspeaker device that the sound-conducting channel has sound pressure amplifying means. These may be, for example, elements that are introduced into the sound-conducting channel. For example, cams, rings, certain bulges, bulges or the like inside the sound-conducting channel may have sound pressure boosting effects.
  • the sound conducting channel is made of metal, glass, wood, stone, plastic and / or Plexiglas.
  • Both sound characteristics and optical properties and design can be coordinated with each other. By such a vote of the materials used, a realization of the speaker device is possible, which combines sound characteristics, design and material costs according to the customer.
  • loudspeaker device for sounding large areas or buildings such as stadiums, halls, halls, shopping malls and the like, and / or for sound within means of transport such as boats, ships, trains, U- railways, trams, airplanes, buses, private cars (car hi-fi) and the like, and / or distribution of commercial information such as advertising, news and the like, and / or in medical devices and / or speakers for the hi-fi sector and / or the professional audio field and / or architectural objects.
  • the loudspeaker device for sounding large areas or buildings such as stadiums, halls, halls, shopping malls and the like, and / or for sound within means of transport such as boats, ships, trains, U- railways, trams, airplanes, buses, private cars (car hi-fi) and the like, and / or distribution of commercial information such as advertising, news and the like, and / or in medical devices and / or speakers for the hi-fi sector and / or the professional audio field and / or architectural objects.
  • a loudspeaker device Possible medical devices in which a loudspeaker device according to the invention can be used are tinnitus control devices, sonographic devices, hearing test devices and other medical devices that apply sound to the patient.
  • a loudspeaker device emitting sound omnidirectionally makes combinations with other omnidirectional radiating speakers meaningful.
  • Combinations with other omnidirectionally radiated sound generating means such as ion loudspeakers are possible.
  • a combination with bending wave transducers can be advantageous.
  • Fig. 1 shows a schematic side view of a speaker device 1.
  • a Schallabstrahlraum 2 of the sound generating means 3 at least one sound-conducting channel 4 is arranged, which is formed as a gap between a radially inner boundary 5 and a radially outer boundary 6.
  • the two boundaries 5 and 6 are funnel-shaped. The curvature corresponds to a quarter of a circumference or an ellipse circumference.
  • the radially inner boundary 5 runs out at the point closest to the sound generating means 3 in a peak 7.
  • the radially outer boundary 6 closes in the area 8, which comes closest to the sound generating means 3, with this flush.
  • the curvature of the radially inner boundary 5 and a radially outer boundary 6 is chosen so that a cross section 9 of the sound-conducting channel 4 over the length of the sound-conducting channel 4 is formed substantially constant.
  • the remote from the sound generating means 3 end 10 of the sound-conducting channel 4 is a sound outlet opening 10, through which the sound can be emitted at a large angle radially to Schallabstrahlraum 2 of the sound generating means 3 to the environment.
  • Parts of the housing 11 of the loudspeaker device 1 adjoin the underside of this opening, which at the same time constitutes an end of the radially outer boundary 6.
  • the stabilizing means which hold the radially inner boundary 5.
  • Fig. 2 shows a section of a speaker device 1 in a housing 11.
  • the located in the Schallabstrahlraum 2 of the sound generating means 3 sound conducting channel 4 can be seen, which is defined by the radially inner boundary 5 and the radially outer boundary 6.
  • the funnel-shaped boundary 6 is designed so that the curvature corresponds to a quarter of a circumference.
  • the curvature of the funnel-shaped boundary 5 also corresponds to a portion of a circumference. However, this is chosen to be slightly smaller in order to keep the tip 7 slightly spaced from the sound generating means 3.
  • the area 8 closest to the sound generating means 3 can be recognized.
  • the cross-section 9 of the sound-conducting channel 4 is largely constant over the almost entire length.
  • the sound exit opening 10 of the sound-conducting channel 4 radiates the sound emitted by the sound generating means 3 at an angle radially to the sound emission direction 2 of the sound generating means 3 to the surroundings, which largely represents the entire circumference of the loudspeaker device 1.
  • the sound discharge opening 10 which extends over the entire circumference is interrupted in practice only by the stabilization means 13 shown, which hold the radially inner boundary 5.
  • Fig. 3 shows a side view of a speaker device 1 in an embodiment with two mutually opposing sound generating means 3.
  • each a sound-conducting channel 4 is arranged, which by the radially inner boundaries. 5 and the radially outer boundaries 6 are defined.
  • the radially inner boundaries 5 of the two sound-conducting channels. 4 in this case form a common body 12, which resembles in shape a card known from card games, which rotates about its longitudinal axis.
  • the outer radius of this body 12 and thus also of the radially inner boundaries 5 is just as long as that of the corresponding radially outer boundaries 6.
  • the two sound-conducting channels 4 are formed so that they open into separate sound outlet openings 10.
  • two separate sound outlet openings 10 are formed, which can be very close to each other.
  • the radially inner boundaries 5 it is also possible for the radially inner boundaries 5 to have a reduced external diameter relative to the radially outer boundaries 6, as a result of which the two sound-conducting channels 4 open into a common sound outlet opening 10.
  • the conventional speakers By sharing a single sound outlet opening 10 or the spatial proximity of the two separate sound outlet openings 10, the sound waves emerging from the loudspeaker housing 11 reach the listener in such a way that, despite the two sound generating means 3, they can locate only a single sound source.
  • the conventional speakers conventional separation of tweeters and midrange speakers and the associated distortions can be avoided.
  • the stabilizing means 13 are again not shown, which carry the radially inner boundaries 5 and the body 12. By means of these stabilizing means 13, it is also possible to guide the supply lines which are required for the power supply and / or activation of the upper sound generating means 3.
  • Fig. 4 shows a section through a speaker device 1 within a speaker housing 11 in an embodiment with two mutually opposing sound generating means 3.
  • two mutually opposing (not shown) sound generating means 3 in a speaker housing 11, which is formed in this case as tower speaker arranged.
  • each sound-conducting channels 4 are arranged, which are defined by the radially inner boundaries 5 and the radially outer boundaries 6.
  • the outer radius of the radially inner boundaries 5 is the same size as that of the corresponding radially outer boundaries 6, whereby the two sound-conducting channels 4 no common sound outlet opening 10 but two separate very close to each other Sound outlet openings 10 in the side walls of the speaker housing 11 form.
  • the distance between these separate sound outlet openings 10 can be varied as desired.
  • columnar loudspeaker housing 11 are also suitable with also round cross-section. In some cases, however, a combination with direct-emitting woofers is desirable in order to be able to image the entire gamut in a single loudspeaker.
  • a vertical arrangement of the sound generating means according to the invention with a sound deflection by means of a sound-conducting channel 4 is possible, but for particularly low frequencies does not offer such a deflection due to their physical properties.
  • a loudspeaker device 1 according to the invention can also be integrated into square or rectangular loudspeaker cabinets 11.
  • the sound emerging from the sound outlet opening 10 should cover a further path in the direction of the corners of the loudspeaker housing 11 than to a side wall of the loudspeaker enclosure 11.
  • the paths can reach up to the boundaries of the loudspeaker housing 11 may be formed as separate channel extensions or as a common channel extension.
  • Fig. 5 shows a representation of sound-absorbing elements 14 in various embodiments, each covering different angles.
  • sound-absorbing elements in the form of wedges or the like in different variants, each covering different angles.
  • These wedge-like sound-absorbing elements have a height 15 which corresponds approximately to the cross-section 9 of the sound-conducting channel 4.
  • Such wedges 14 can be introduced into the sound conducting channel 4 or the sound conducting channels 4 so as to exclude a certain area from the sound and / or to reduce the sound intensity in this area. As already described, this can be useful to avoid interference in the area directly between two speaker devices 1, or also to avoid the sound radiation directly on a wall in the vicinity of the speaker device 1 and thus to minimize unwanted sound reflections.
  • Fig. 6 shows a schematic plan view of a speaker device 1 within a speaker housing 11 with a circular base. Unlike the in Fig. 4 In the embodiment shown, it is not necessary in speaker housings 11 with a circular base surface that the sound after leaving the sound-conducting channel 4 in the direction of the corners travels a further distance within channel extensions before it leaves the speaker housing 11 through the sound outlet opening 10. This results in less discoloration, which can occur within the canal processes. Therefore, such a design is particularly favorable. In some embodiments it is also possible to integrate such loudspeaker devices 1 directly into the architecture without a special housing. This can be done for example by the insertion of a speaker device 1 in a building wall or ceiling.
  • the stabilizing means 13 which are arranged along the circumference of the speaker device 1 and which carry the radially inner boundaries 5. Since this stabilizing agent 13 are located in the sound outlet, the diameter is chosen as small as possible. In an embodiment with two mutually opposing sound generating means 3, however, by one or more of these stabilizing means 13, the cables are also used, which serve the power supply and / or control of a speaker device 1. In such a case, stronger versions of the stabilizing means 13 with internal cable routing are also possible. These stronger stabilizing means 13 are also capable of carrying additional weight through the second loudspeaker device 1 and dampening vibrations.
  • Fig. 7 shows a schematic side view of a speaker device 1 in a hanging execution, for example, as a ceiling speaker. Shown is the ceiling 16 of a room, which has a recess 17, in which the speaker device 1 is partially embedded.
  • the sound generating means 3 and located in the Schallabstrahlraum 2 radially outer boundary 6 of the sound-conducting channel 4 are completely embedded within the recess 17. Only the radially inner boundary 5 protrudes from the ceiling 16.
  • the radially inner boundaries 5 and the radially outer boundaries 6 of the sound-conducting channel 4 in this example form a circular arc, which does not equal a quarter circle circumference or an ellipse circumference, but is smaller.
  • Fig. 8 shows a section through a speaker device 1 in a hanging execution, for example, as a ceiling speaker.
  • the ceiling 16 of the room is interrupted and has a recess 17, in which the speaker device 1 is so far admitted that the sound generating means 3 and located in the Schallabstrahlraum 2 radially outer boundary 6 of the sound-conducting channel 4 are completely embedded and are thus above the ceiling level.
  • the radially inner boundary 5 protrudes downward from the recess 17 and therefore ends below the plane which is formed by the ceiling 16.
  • the legs defining the radially inward boundaries 5 and the radially outer boundaries 6 of the sound conducting channel 4 describe a circular arc which is smaller than a quarter of a circumference or an ellipse circumference.
  • the arc is further reduced in order to reduce the cone also, which lies directly below the speaker device 1 in the shadow of the radially inner boundary 5 and in which the sound emerging from the sound openings 10 sound can not be heard in the desired volume because no direct sound emission takes place in this area.
  • the main radiation direction of the sound is not parallel to the ceiling, whereby sound reflections are reduced with the ceiling.
  • Fig. 9 shows a schematic side view of a speaker device 1 with capping of the tip 7 of the cone-shaped radially inner surface 5 of the sound-conducting channel 4.
  • a capping of the tip 7 is conceivable in addition to the radial radiation in the embodiment as a ceiling speaker parts of the sound also directly into To radiate the area below the speaker, which would not be sufficiently applied to an exclusive radial radiation in the direction of the sound outlet openings 10, with sound.
  • Fig. 10 shows a schematic side view of a speaker device 1 with perforation 18 of the tip 7 of the conically shaped radially inner surface 5 of the sound-conducting channel 4.
  • a perforation is a second way to parts of the sound in addition to the radial radiation also radiate directly into the area below the speaker, which would be without such a measure in the shadow of the sound outlet openings 10.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Claims (14)

  1. Dispositif de haut-parleur (1), comprenant au moins un dispositif de production de son, dans lequel est disposé dans une direction d'émission de son au moins partiellement un canal conducteur de son, qui est destiné à conduire le son provenant du dispositif de production de son le long du canal conducteur de son de manière à ce que le son sorte du dispositif de haut-parleur par une ouverture de sortie de son formée par une deuxième extrémité du canal conducteur de son à un angle d'émission défini par l'ouverture de sortie de son, et dans lequel une coupe transversale du canal conducteur de son est formée de manière constante sur au moins 50% de la longueur du canal conducteur de son,
    caractérisé en ce que
    le canal conducteur de son présente sur une paroi intérieur par section un matériau principalement réfléchissant le son et par section un matériau principalement absorbant le son, dans lequel le matériau principalement réfléchissant le son est disposé à l'intérieur du canal conducteur de son sur une surface radiale intérieure et le matériau principalement absorbant le son est disposé à l'intérieur du canal conducteur de son sur une surface radiale extérieure, dans lequel une limite radiale intérieure et radiale extérieure du canal conducteur de son suivent chacune la forme d'une courbe qui correspond à une section de la circonférence d'un cercle ou d'une ellipse.
  2. Dispositif de haut-parleur (1) selon la revendication 1,
    caractérisé en ce que
    la coupe transversale du canal conducteur de son est formée de manière constante sur au moins 70% de la longueur du canal conducteur de son.
  3. Dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le canal conducteur de son est formé de façon à ce que le son sorte radialement de l'ouverture de sortie de son à un angle d'au moins 5°.
  4. Dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    la limite radiale intérieure et radiale extérieure du canal conducteur de son suivent chacune la forme d'une courbe qui correspond à un quart de la circonférence d'un cercle ou d'une ellipse.
  5. Dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisé en ce qu'
    une ouverture d'entrée du canal conducteur de son présente un diamètre intérieur que correspond à un diamètre extérieur du haut-parleur.
  6. Dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisé en ce qu'
    un haut-parleur comprenant le dispositif de production de son est agencé horizontalement et émet le son produit au moins en partie verticalement vers le haut ou vers le bas.
  7. Dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif de haut-parleur présente au moins deux haut-parleurs, dans lequel au moins un émet le son au moins en partie verticalement vers le haut et au moins un autre émet le son au moins en partie verticalement vers le bas.
  8. Dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le canal conducteur de son est formé de façon courbée de manière à ce que le son sorte horizontalement de l'ouverture de sortie de son.
  9. Dispositif de haut-parleur (1) selon la revendication 1,
    caractérisé en ce que
    la surface radiale interne du canal conducteur de son présente des moyens qui permettent au moins en partie une pénétration du son.
  10. Dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    l'ouverture de sortie de son est plus large que le canal conducteur de son.
  11. Dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le canal conducteur de son est agencé dans un boîtier de haut-parleur.
  12. Dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le canal conducteur de son présente des moyens amplifiant la pression sonore.
  13. Dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le canal conducteur de son est fabriqué à partir de métal, de verre, de pierre, de bois, de plastique et/ou de Plexiglas.
  14. Utilisation d'un dispositif de haut-parleur (1) selon l'une des revendications précédentes,
    caractérisée en ce que
    le dispositif de haut-parleur est utilisé pour la sonorisation de grandes surfaces ou de bâtiments et/ou pour la sonorisation à l'intérieur de moyens de transport, et/ou pour la diffusion d'informations commerciales et/ou dans des dispositifs médicaux et/ou dans des haut-parleurs pour le secteur hi-fi et/ou pour le secteur audio professionnel et/ou dans des objets architecturaux.
EP11721529.3A 2010-05-28 2011-05-26 Dispositif haut-parleur à ouverture de sortie du son périphérique, en forme générale d'entonnoir Not-in-force EP2577987B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010021879 DE102010021879A1 (de) 2010-05-28 2010-05-28 Lautsprechervorrichtung mit umlaufender, trichterförmiger Schallaustrittsöffnung
PCT/EP2011/058615 WO2011147902A1 (fr) 2010-05-28 2011-05-26 Dispositif haut-parleur à ouverture de sortie du son périphérique, en forme générale d'entonnoir

Publications (2)

Publication Number Publication Date
EP2577987A1 EP2577987A1 (fr) 2013-04-10
EP2577987B1 true EP2577987B1 (fr) 2018-10-17

Family

ID=44262905

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11721529.3A Not-in-force EP2577987B1 (fr) 2010-05-28 2011-05-26 Dispositif haut-parleur à ouverture de sortie du son périphérique, en forme générale d'entonnoir

Country Status (10)

Country Link
US (1) US8824718B2 (fr)
EP (1) EP2577987B1 (fr)
JP (1) JP5774093B2 (fr)
CN (1) CN102845078B (fr)
BR (1) BR112012030161A2 (fr)
CA (1) CA2795676C (fr)
DE (1) DE102010021879A1 (fr)
ES (1) ES2706400T3 (fr)
RU (1) RU2573037C2 (fr)
WO (1) WO2011147902A1 (fr)

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Also Published As

Publication number Publication date
WO2011147902A1 (fr) 2011-12-01
RU2012139665A (ru) 2014-07-10
ES2706400T3 (es) 2019-03-28
CN102845078B (zh) 2016-01-27
JP2013527719A (ja) 2013-06-27
CA2795676A1 (fr) 2011-12-01
CN102845078A (zh) 2012-12-26
JP5774093B2 (ja) 2015-09-02
US20130058518A1 (en) 2013-03-07
DE102010021879A1 (de) 2011-12-01
EP2577987A1 (fr) 2013-04-10
BR112012030161A2 (pt) 2018-05-15
US8824718B2 (en) 2014-09-02
RU2573037C2 (ru) 2016-01-20
CA2795676C (fr) 2018-08-14

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