KR20010012592A - An acoustic object - Google Patents

An acoustic object Download PDF

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Publication number
KR20010012592A
KR20010012592A KR1019997010550A KR19997010550A KR20010012592A KR 20010012592 A KR20010012592 A KR 20010012592A KR 1019997010550 A KR1019997010550 A KR 1019997010550A KR 19997010550 A KR19997010550 A KR 19997010550A KR 20010012592 A KR20010012592 A KR 20010012592A
Authority
KR
South Korea
Prior art keywords
panel
method according
characterized
loudspeakers
loudspeaker
Prior art date
Application number
KR1019997010550A
Other languages
Korean (ko)
Inventor
아지마헨리
콜럼스마틴
뱅크그레이엄
Original Assignee
에이지마, 헨리
뉴 트랜스듀서스 리미티드
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to GB9709969.1 priority Critical
Priority to GBGB9709969.1A priority patent/GB9709969D0/en
Application filed by 에이지마, 헨리, 뉴 트랜스듀서스 리미티드 filed Critical 에이지마, 헨리
Publication of KR20010012592A publication Critical patent/KR20010012592A/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/02Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04Plane diaphragms
    • H04R7/045Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion

Abstract

An array of loudspeakers generates resonance in them to produce sound output, and a loudspeaker composed of a resonant panel-like member having a vibration exciter for applying flexural wave energy to the panel-like member, the panel-like loudspeakers are similarly arranged. And a common driver to actually produce disjoint sound output, wherein the overall sound output is actually a single sound source.

Description

Sound device {AN ACOUSTIC OBJECT}

It is known to provide an arrangement of conventional pistonous loudspeakers that reproduce the same signal for acoustic reinforcement.

The disadvantage of such an arrangement is that interference occurs between the sound outputs of the arrangement of the various loudspeakers, which cause a destructive delay effect by the phases of such loudspeakers being in close contact with each other.

We have proposed in International Patent Application WO97 / 09853 to provide a multichannel distribution mode loudspeaker device composed of a large center panel loudspeaker acting as a radiation screen and a small left and right panel loudspeaker.

In such a three-channel system, these channels generally reproduce different signals, such as the so-called left and right stereo signals and the center channel signal, and in the present invention, such a loudspeaker device has a single signal, in particular a three-sound source characteristic of reproduced sound. You can see the unexpected result of sound source.

The present invention relates to an acoustic object or an apparatus for constituting an array of loudspeakers.

The invention preferably relates to an acoustic device which constitutes an arrangement of panel loudspeakers of the kind described in the applicant's international patent application WO97 / 09842 but not exclusively.

1 and 1A are front and side views, respectively, of an arrangement of a panel loudspeaker according to the present invention;

FIG. 2 is a side view similar to FIG. 1A illustrating the arrangement of an arc to form an arc; FIG.

3 is a side view similar to FIG. 2 in a zigzag contoured arrangement;

4 is a rear view of an exemplary series / parallel printed circuit track pattern for energizing and connecting excitons of each panel of an array.

(Explanation of symbols for the main parts of the drawing)

1. Sound system 2. Array

3. Panel type loudspeaker 4. Resonant panel

5. Substrate 6. Vibration Exciter

7. Hinge 8,13. Conductive Track

9,10. Positive-contact contact 11,12. Input terminal

According to the present invention there is characterized by an acoustic device consisting of an array of loudspeakers, and an adjacently arranged panel loudspeaker for common driving to produce a sound output that actually operates as a single sound source, in fact a phase and non-associative sound output. .

Such an arrangement manifests itself as a separate sound output of the constituent loudspeaker, at least primarily as a structural additive and as a large range of freedom of practically destructive interference in effect.

Loudspeakers have no mechanical coupling between the edge vibrations of adjacent panels, that is, those edges of less than 1 mm are adjoiningly suitable, not forcibly against vibrations; There is only an acceptable leakage between adjacent panels, and the frequency can be influenced by measures such as independent and automatic force barrier wall means, and at least not larger than the dimensions of the panels described in the embodiments are contemplated.

The requirement of the whole actually works even if the entire array is a single sound source.

Loudspeakers are those of the same dimensions and shapes, of different sizes of essentially similar shapes, of the same or different sizes of the same or different shapes, and effectively of anything in a "tiled" arrangement.

The arrangement therefore preferably has four or more loudspeakers in any shape, preferably in one or more rows.

Panel loudspeakers are interconnected between adjacent edges.

Interconnection between panels includes a hinge.

A flexible member is disposed so as to lie over at least at the edge of each panel and attached thereto to form an interconnect between the panels.

The flexible member is a sheet which lies on the surface of each panel to form a substrate and forms a hinge.

The flexible member or sheet is printed with an electrical circuit so that the panel can be electrically connected.

A single pair of electrical terminals on the substrate is electrically connected to the vibration excitation unit of each loudspeaker.

Frame means are provided for joining the edges of the panels together.

The frame means constitutes an acoustic barrier wall.

The panel is preferably a resonant distribution mode loudspeaker, each loudspeaker being composed of a member having the ability to transmit and maintain input vibration energy by bending waves in at least one operating region extending along a transverse axis of thickness, the at least one In order to have the resonant mode vibrating parts distributed over the region of, the vibration exciter is mounted on the member at a predetermined optional position or place within the region, and for the vibration excitation means at the position and place described above. Vibration causes the member to vibrate so that it resonates, forming an acoustic radiator that provides acoustic power.

The arrangement of the distribution mode loudspeaker panels reproduces the same audio signal and produces a synthetic acoustic system that approximates the sum of the respective forces corresponding to each distribution mode loudspeaker.

Such an arrangement exhibits no destructive interference by the acoustic radiation substrate from the distribution mode loudspeaker.

The distribution mode loudspeaker panel formed in the "tile" shape can be used in an installation form such as a substrate such as a wall or a substrate assembled on a thin flexible carrier, which can be easily folded and thus a professional or similar application. It can be carried on.

Thin lightweight thermoplastic sheet materials, such as what is known under the trademark "Mernex", include acoustically transparent fabric structures or other materials that connect each panel in a "tile" arrangement and form flexible bonds between the panels. Can be used.

The arrangement of the distribution mode loudspeakers allows the handling of increased power by the effect of high dissipation of the multi-exciter.

This arrangement can be used to increase the highest sound pressure level achievable from a distribution mode loudspeaker system.

The arrangement of loudspeaker panels is flexible at the panel boundaries so that they can accommodate pillars or other structural features to conform physically to various structural contours or appearances.

In some applications, such as home movie screens, panel arrays allow for space savings by allowing rolling up of the acoustics to easy handling for storage or transport.

Distribution Mode The direction control can be exercised by selecting the specifications of the various surface coupling structures of the loudspeaker.

In addition, the electronic delay of the applied signal can be selectively applied to each panel for directional control and shape of the sound output of the system.

In addition, array distribution can be used by itself to control sound distribution and directivity.

In addition, the control of the radiation pattern may be made by zigzag folding of the panel.

By selecting the degree of inclusion between the unfolded and consequently the folding, the physical dimensions of the ungrounded loudspeaker system are finely adjusted depending on the acoustic characteristics of the application and the requirements.

Other constants of acoustic performance include equalization related to the distribution and placement of the panels of the array, ie, geometric half-arbitrary relationships that aid in the radiation performance of the array.

In some implementations, flexible thermoplastic sheets or films are used as “tile attach” attachments or supports, and conductive electrical tracks may be printed on the film to facilitate conductive electrical connection between each panel.

This has the advantage of orderly and reliable electrical wiring for a "tile" arrangement.

The finite connection pattern allows fine control of three parameters: so-called sensitivity, load impedance, and force handling capacity.

In another form, the panel arrangement can be realized by a frame that is reasonably dependent, i.e., a plastic that supports each frame.

This is a more expensive approach to "tile attachment" on flexible sheets, but in some applications it is more appropriate.

This benefit includes significant and sufficient injection to provide good low frequency performance and sound quality resulting from larger material assembly and beneficial acoustic barrier effects.

The figure shows an acoustic device 1 in the form of an array 2 of generally identical panel loudspeakers 5 mounted in several rows on a substrate.

The panel loudspeaker in this embodiment is a resonant panel loudspeaker of the kind described in International Patent Application WO97 / 09842.

Each loudspeaker 3 therefore consists of a vibrating exciter 6 and a resonant panel 4 mounted therein, for example an inertial force for applying flexural wave energy to a panel which generates a resonance for generating an acoustic output. It is the electric force device of.

The substrate is a flexible sheet of plastic film fixed by adhesive means on one side of each panel, and the panels are held in mutually adjacent relationship to form six rows of five panels in a rectangular arrangement.

Thin bands of substrates are defined between the edges of adjacent panels forming the hinges 7, and the arrangement can be arranged in a flat condition as shown in FIG. 1A, or stored in a curved form as shown in FIG. 2. Or fold to outline.

In addition, as shown in FIG. 3, an array may be arrange | positioned in a zigzag shape.

As shown in Fig. 4, the other surfaces of the substrate can be formed by printing into electrically conductive tracks 8 and 13, respectively, with the intermediate tracks arranged in series / parallel, and vibrating exciter 6 For each terminal of is parallel in accordance with the columns associated with each pair of positive and negative contacts 9, 10, the exciter can be activated in a convenient way to connect to each terminal of the vibrating exciter 6 The conductive tracks 8 and 13 have respective input terminals 11 and 12.

Embodiments of the present invention have been described with reference to a rectangular loudspeaker array having a flexible substrate to form the basis of the array of loudspeaker panels, but it is also possible to combine the loudspeaker panel with other arrangements.

The panels may each be mounted in a frame arranged for interconnection and / or two or more panels may be mounted in a common frame.

The interconnection of the frames can be hinged.

The loudspeaker panel may be mounted in or on a rigid or semi-rigid and required compliance substrate, and may also form a barrier wall.

However, including the freedom of any operative special physical interlocking measures, an effective and similar combination of two or more panel loudspeakers is achieved, i.e., located somewhere to prompt the required action.

In Fig. 1 it can be replaced by panels of different dimensions, i.e., by means of a single large unit, a negative arrangement of adjacent loudspeaker units.

The shapes of the other panels include elliptical or super elliptical shapes, and may be mixed in any arrangement.

As shown in the drawings, the present invention provides and promotes the following.

1. Increased output handling for high power applications.

2. Interleaving of the distribution mode loudspeaker frequency distribution by the selected eccentricity of the distribution in the shape of each panel.

3. Better control of eccentric uniformity by selection of directivity of various distribution mode loudspeaker panels.

4. Control of the orientation of the panel arrangement, ie by the overall surface bonding structure, even if the curvature is simple or complex.

5. Use of digital signal processing for control of directivity by control of different delays for each panel in the array.

6. Physically separate panel arrays and carry them by the use of radiation application by optically reflective surfaces on which video or images are emitted and by rolling up both sides of the device as so-called "tile attachable" arrangements and screens. Promote sex.

7. Improvement of overall acoustic response by introduction of electronic delay and uniformization of transmission function through analog and digital methods.

The acoustic device of the present invention can be applied to a passenger car or an automobile headliner.

The present invention provides a simple and improved loudspeaker arrangement.

Claims (16)

  1. An array of loudspeakers is a loudspeaker consisting of a resonant panel-like member having a vibrating exciter to generate resonance to them to generate sound output and to apply flexion wave energy to the panel-like member. And having a common driver to produce a substantially non-associative sound output, wherein the overall sound output is a substantially single sound source.
  2. The method of claim 1,
    An acoustic device, wherein the panel loudspeakers have the same dimensions.
  3. The method according to claim 1 or 2,
    An acoustic device wherein panel loudspeakers are interconnected between their adjacent edges.
  4. The method of claim 3, wherein
    Acoustic device, characterized in that the interconnection between the panels comprises a hinge.
  5. The method according to any one of claims 1 to 4,
    Acoustic apparatus, characterized in that the substrate means is mounted to the array of loudspeakers.
  6. The method according to claim 4 or 5,
    At least a flexible member overlying at the edge of each panel and attached thereto to form an interconnect between the panels.
  7. The method of claim 6,
    A sound device, characterized in that the flexible member also forms a hinge.
  8. The method according to any one of claims 5 to 7,
    An acoustic device, characterized in that the flexible member forms a substrate.
  9. The method according to any one of claims 1 to 8,
    A sound device, characterized in that a pair of input terminals are electrically connected to a vibration exciter on each loudspeaker in the array.
  10. The method of claim 9,
    An audio device, characterized in that the input terminal is located on the substrate.
  11. The method according to any one of claims 6 to 10,
    And a flexible member is printed on at least one electric circuit so that the vibration exciter is electrically connected.
  12. The method according to any one of claims 6 to 11,
    An acoustic device, characterized in that the flexible member is a sheet disposed so as to lie on the surface of each panel in the array.
  13. The method according to any one of claims 1 to 12,
    And the frame means joins the edges of the panels together.
  14. The method of claim 13,
    An acoustic device, characterized in that the frame means is composed of an acoustic barrier wall.
  15. The method according to any one of claims 1 to 14,
    And the panel is a resonant distribution mode loudspeaker.
  16. The method according to any one of claims 1 to 15,
    An acoustic device, characterized in that the arrangement is made up of one or more rows of panel loudspeakers.
KR1019997010550A 1997-05-17 1998-05-14 An acoustic object KR20010012592A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9709969.1 1997-05-17
GBGB9709969.1A GB9709969D0 (en) 1997-05-17 1997-05-17 An acoustic object

Publications (1)

Publication Number Publication Date
KR20010012592A true KR20010012592A (en) 2001-02-15

Family

ID=10812428

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019997010550A KR20010012592A (en) 1997-05-17 1998-05-14 An acoustic object

Country Status (13)

Country Link
EP (1) EP0981927A2 (en)
JP (1) JP2002508897A (en)
KR (1) KR20010012592A (en)
CN (1) CN1256065A (en)
AR (1) AR012706A1 (en)
AU (1) AU736000B2 (en)
BR (1) BR9808814A (en)
CA (1) CA2290466A1 (en)
GB (1) GB9709969D0 (en)
IL (1) IL132685D0 (en)
TW (1) TW391146B (en)
WO (1) WO1998053638A2 (en)
ZA (1) ZA9803988B (en)

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Also Published As

Publication number Publication date
BR9808814A (en) 2000-07-18
EP0981927A2 (en) 2000-03-01
AR012706A1 (en) 2000-11-08
CA2290466A1 (en) 1998-11-26
IL132685D0 (en) 2001-03-19
CN1256065A (en) 2000-06-07
TW391146B (en) 2000-05-21
JP2002508897A (en) 2002-03-19
WO1998053638A2 (en) 1998-11-26
WO1998053638A3 (en) 1999-03-11
AU736000B2 (en) 2001-07-26
AU7439698A (en) 1998-12-11
ZA9803988B (en) 1999-01-25
GB9709969D0 (en) 1997-07-09

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