CN106454616B - Holographic three-dimensional sound system - Google Patents

Abstract

A kind of holographic three-dimensional sound system, comprising: multi-channel sound signal generation system, the first multi-channel audio power amplification system, system recorder memory, the channel m preamplifier, the second multi-channel audio power amplification system and the holographic three-dimensional player of multichannel；Multi-channel sound signal generation system generates m channel sound electric signal；The multi-channel sound electric signal of first multi-channel audio power amplification system receiving channel voice signal generation system generation simultaneously amplifies；System recorder memory connects the first multi-channel audio power amplification system, stores the m channel sound electric signal of amplification；The channel m preamplifier linkage record storage system amplifies the m channel sound electric signal of amplification；Second multi-channel audio power amplification system receives the multi-channel sound electric signal amplification amplified through the channel m preamplifier；The holographic three-dimensional player of multichannel connects the second multi-channel audio power amplification system, according to m channel sound electric signal playback.The holographic three-dimensional physics sound field that multiple spot omnidirectional may be implemented in the present invention reproduces.

Description

Holographic three-dimensional sound system

Technical field

The present invention relates to sound technique field more particularly to a kind of holographic three-dimensional sound systems.

Background technique

Sound equipment has simulation biology to feel that imaging and physics wave field are rendered as two kinds of think ofs in the three-dimensional imaging for realizing sound Road.

Biology feels that imaging method is so that brain is obtained the sense of sound source position in the difference of two ear position of human body simulation wave field Feel.Technology is mainly realized by left and right sound volume difference at present, does not realize the reproduction of wave field really actually.Now with one kind Wear-type holography sound technique realizes pickup and playback all around, but auditor must in a manner of sound field around phantom bead The earphone, which must be worn, just holographic sound equipment (entirely around sound technique) effect, is easy to influence the presence and comfort of auditor.

Physics wave field reproducting method is that acoustic wavefield is reproduced in large range of space-time, and auditor is in the four-dimension In space, regardless of posture, just there is three-dimensional feeling naturally.

The notable difference of above two method mainly has following three points:

1, the enforcement difficulty of physics wave field reproducting method is larger, and can key be keep wavefield directivity；

2, whether the limitation of the position of auditor and posture, i.e. phonotape and videotape float indefinite with walking about for auditor；

3, whether the limitation of depth and range, i.e. phonotape and videotape can only appear in a foil-like areas.

Existing sound equipment only has pickup and the playback function of the information such as the frequency to acoustical vibration, amplitude, phase, does not have The inspection of direction of vibration and wave field form is picked up and playback function.It is simply that being lost the direction characteristic of fluctuation.It loses The reason of direction characteristic, in that directly detect and drive the working method of air dielectric with vibrating diaphragm.This working method is lost Spatial directivity is lost, the shallow floating of stereoscopic localized, inaccuracy is untrue, it is summarized as follows:

1) acoustic-electric, electro-acoustic conversion efficiency are low

Vibrating diaphragm directly drives air dielectric, and fluid is flowed to surrounding without vibrating naturally, is equivalent to shake one's fists and strikes air and make Not energetically, efficiency is certainly just low.Technically it is called acoustic impedance mismatch.It is mostly solved at present with increasing the method for mechanical damping This problem, such as play wave and the stronger damping of vibrating diaphragm side setting.Mechanical damping will expend energy, have lost energy efficiency Certainly it just mentions not high.

2) efficiency and the contradiction of fidelity are than more serious

Figure 1A is that single vibrating diaphragm directionality loses schematic diagram, and Figure 1B is single diaphragm structure sound short circuit schematic diagram, such as Figure 1A and Shown in Figure 1B, vibrating diaphragm directly drives air dielectric vibration, the acoustic pressure before and after vibrating diaphragm be it is antipodal, this more enhances air and exists It is flowed and non-vibrating effect around vibrating diaphragm, so that pickup loses directionality, playback short circuit low efficiency.It is a little farther, acoustic pressure Just sharply decline, efficiency is very low, and industry is called " sound short circuit ".

The prior art is with fully sheathed case or to swing to the method for case and solve sound short circuit problem.After fully sheathed case has lost vibrating diaphragm Energy, efficiency is lower；Swing to that case is high-efficient, but the length of inverse direction route has stronger selecting frequency characteristic, and the weight on frequency band Rebeating jump, causes frequency response to be deteriorated, this generates the contradictions of efficiency and fidelity.

3) spatial directivity is lost, the shallow floating of stereoscopic localized is inaccurate untrue.

Vibrating diaphragm directly drives or detects the vibration of air dielectric, is exactly that conversion process is lost vibration there is also a defect Dynamic directionality, as shown in Figure 1A, Figure 1B, Fig. 2 and Fig. 3.201 be wavefront surface in Fig. 2, and 202 be microphone vibrating diaphragm, acoustic wavefield warp It crosses after microphone vibrating diaphragm, exports as bcos (ω t-kx) cos θ, wherein cos (ω t-kx) is the fluctuation at microphone vibrating diaphragm, and ω is Circular frequency, t are the time, and k is wave number, and x is distance, and θ is angle, and b is sensitivity, as shown in Figure 2, single vibrating diaphragm acoustic-electric conversion, side Tropism θ loses.

Described directionality refers to tropism in traditional technology, refers to the relationship between sensitivity and Acoustic Wave Propagation direction, The two directionality, which are meant that, to be not quite similar.In the information recorded, the direction of vibration is lain in amplitude, still It is unknown.In the prior art, the incoming wave of any direction shape, when playback are all vibrating diaphragm face vertical vibration drivings, and wave propagates one Section distance, can scatter using vibrating diaphragm midpoint as the center of circle, can not accurate simulation scene acoustic wavefield spatial distribution form, referring to Fig. 3 In, 301 be wavefront surface center of circle equivalent position, and 302 be vibrating diaphragm, and when single side vibrating diaphragm acoustic-electric is converted, sound short circuit, the field of force dissipate efficiency Low, front wavefront surface is partial sphere, and the spherical surface center of circle is in vibrating diaphragm position later.Comprehensive existing technology acoustic-electric and electroacoustic conversion exist The low several big defects of sound short circuit problem with directionality loss and loudspeaker of transfer efficiency, to realization clear stereo field Playback, be it is very unfavorable, have a position inaccurate, far and near without level, acoustic image is floated with LisPos and posture, Yi Jisheng The light inelastic defect of tone level.

Aiming at the problem that sound system in the prior art cannot achieve holographic three-dimensional pickup and playback, not yet propose have at present The solution of effect.

Summary of the invention

The present invention provides a kind of holographic three-dimensional sound systems, to reach the physics reconstruction of hologram of acoustic wavefield, realize complete Cease stereo pickup and playback.

To achieve the goals above, the embodiment of the invention provides a kind of holographic three-dimensional sound system, the holographic three-dimensional sounds Acoustic system includes: multi-channel sound signal generation system, at least one first multi-channel audio power amplification system, system recorder memory, m Channel preamplifier, at least one second multi-channel audio power amplification system and the holographic three-dimensional player of an at least multichannel；

The multi-channel sound signal generation system is for generating m channel sound electric signal；Wherein, m >=4, and m is 4 or 6 Integral multiple；

The first multi-channel audio power amplification system includes that multiple groups are put by the first single channel preamplifier and the first power First amplifying circuit of big device composition, every group of first amplifying circuit receive the channel sound signal generation system and generate wherein One channel sound electric signal simultaneously amplifies；

The system recorder memory connects the first multi-channel audio power amplification system, for storing the amplified m Channel sound electric signal；

The channel m preamplifier connects the system recorder memory, for the amplified m channel sound is electric Signal is amplified again；

The second multi-channel audio power amplification system connects the channel m preamplifier, second multi-channel audio Power amplification system includes the second amplifying circuit that multiple groups are made of the second preamplifier and the second power amplifier, and every group second puts Big circuit is received through the amplified wherein channel sound electric signal of the channel m preamplifier and is amplified；

Each channel of the holographic three-dimensional player of multichannel connects wherein one group of second amplifying circuit, for according to again Secondary amplified m channel sound electric signal carries out playback.

In one embodiment, the multi-channel sound signal generation system includes: the holographic three-dimensional sound pick-up of an at least multichannel, It include: multiple sound pick-ups and support construction, the support construction is used to support the multiple sound pick-up, so that the multiple pickup The equivalent operation face of device is located on one of face of a regular polygon, the center in each sound pick-up equivalent operation face and its The center in corresponding face is overlapped.

In one embodiment, the holographic three-dimensional player of multichannel includes: multiple loudspeakers and support construction, the support Structure is used to support the multiple loudspeaker, so that the equivalent operation face of the multiple loudspeaker is located at a regular polygon On one of face, the center in the corresponding face in the center in each loudspeaker equivalent operation face is overlapped.

In one embodiment, the holographic three-dimensional sound system further include: broadcast reception demodulating and decoding system is connected to the note It records between storage system and the channel m preamplifier, the broadcast reception demodulating and decoding system includes:

Encoder, for being encoded to single channel sound electric signal to the m channel sound electric signal；

Modulator connects the encoder, for being modulated to the single channel sound electric signal after coding；

Transmitting station is connected to the modulator, for emitting the modulated single channel sound electric signal；

Receiver connects the transmitting station, receives the single channel sound modulation signal of the transmitting station transmitting；

Demodulator connects the receiver, for demodulating to the single channel sound modulation signal；

Decoder connects the demodulator, for the single channel sound electric signal to be decoded as m channel sound telecommunications Number.

In one embodiment, the multi-channel sound signal generation system be used for by it is existing it is stereo be converted to intend it is holographic three-dimensional Signal, wherein the multi-channel sound signal generation system includes:

Two-channel stereo equipment, for generating two-channel stereo；

Filter connects the two-channel stereo equipment, is filtered to the two-channel stereo；

Splitter, for the filtered two-channel stereo to be divided into m channel sound electric signal；

Phase splitter, the sound in each channel in the m channel sound electric signal for obtaining the splitter Sound electric signal carries out phase hologram respectively, obtains the channel m holographic signal.

The holographic three-dimensional sound system of the embodiment of the present invention has the sound to the sound source of front and back different directions up and down It answers, intensity and phase in each direction is all different, and playback can continue the true wavefield direction at record scene.It is holographic three-dimensional to pick up Sound device can pick up the direction in space phase property of live sound field, signal be acquired for holographic playback, so as to physics wave field office The mode that portion reproduces, realizes holographic three-dimensional acoustics, is the first link of holographic three-dimensional sound technique.Holographic three-dimensional loudspeaking Device can realize holographic three-dimensional acoustics in such a way that physics wave field locally reproduces, and be the last of holographic three-dimensional sound technique Link.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted a limitation of the invention.In the accompanying drawings:

Figure 1A is that single vibrating diaphragm directionality of the prior art loses schematic diagram；

Figure 1B is single diaphragm structure sound short circuit schematic diagram of the prior art；

Fig. 2 is the microphone operation principle schematic diagram of the prior art；

The acoustic pressure short circuit of the existing loudspeaker of Fig. 3 and direction characteristic schematic diagram；

Fig. 4 is the structural schematic diagram of the holographic three-dimensional sound system of one embodiment of the invention；

Fig. 5 is the structural schematic diagram of the first multi-channel audio power amplification system of the embodiment of the present invention；

Fig. 6 is the structural schematic diagram of the second multi-channel audio power amplification system of the embodiment of the present invention；

Fig. 7 is the structural schematic diagram of the holographic three-dimensional sound system of another embodiment of the present invention；

Fig. 8 is the structural schematic diagram of the broadcast reception demodulating and decoding system of the embodiment of the present invention；

Fig. 9 is the structural schematic diagram of the multi-channel sound signal generation system of one embodiment of the invention；

Figure 10 A is the structural schematic diagram of the multi-channel sound signal generation system of another embodiment of the present invention；

Figure 10 B is the holographic three-dimensional sound system electromechanics logical relation schematic diagram in 8 channel of two-way of the embodiment of the present invention；

Figure 11 is the structural schematic diagram of holographic three-dimensional sound pick-up according to an embodiment of the present invention；

Figure 12 is another structural schematic diagram of holographic three-dimensional sound pick-up according to an embodiment of the present invention；

Figure 13 is the preferred structure schematic diagram of holographic three-dimensional sound pick-up according to an embodiment of the present invention；

It is another preferred structure schematic diagram of holographic three-dimensional sound pick-up shown in Figure 14；

Figure 15 is that output schematic diagram is surveyed according to the single channel system of the relevant technologies；

Figure 16 is holographic three-dimensional sound pick-up actual measurement output schematic diagram according to an embodiment of the present invention；

Figure 17 is the translucent casing appearance schematic diagram of holographic three-dimensional sound pick-up according to an embodiment of the present invention；

Figure 18 is the cardinal direction marker schematic diagram of holographic three-dimensional sound pick-up according to an embodiment of the present invention；

Figure 19 is the operation principle schematic diagram of the holographic three-dimensional sound pick-up of two-way according to an embodiment of the present invention；

Figure 20 is the structural schematic diagram of the holographic three-dimensional loudspeaker of the embodiment of the present invention；

Figure 21 is the decomposition and combination structural schematic diagram of the holographic three-dimensional loudspeaker of the embodiment of the present invention；

Figure 22 is that output imaging schematic diagram is surveyed according to the single channel system of the relevant technologies；

Figure 23 is holographic three-dimensional loudspeaker actual measurement output imaging schematic diagram according to an embodiment of the present invention；

Figure 24 is the cardinal direction marker schematic diagram of holographic three-dimensional loudspeaker according to an embodiment of the present invention；

Figure 25 is the operation principle schematic diagram of the holographic three-dimensional loudspeaker of two-way according to an embodiment of the present invention；

Figure 26 is holographic three-dimensional coil-moving speaker first structure diagram according to an embodiment of the present invention；

Figure 27 is the second structural schematic diagram of holographic three-dimensional coil-moving speaker according to an embodiment of the present invention；

Figure 28 is that the holographic three-dimensional loudspeaker of two-way according to an embodiment of the present invention builds theater effect schematic diagram；

Figure 29 is after the holographic three-dimensional loudspeaker of multichannel according to an embodiment of the present invention is built around movie theatre effect diagram；

Figure 30 is that (or playback) structural schematic diagram is picked up in omnidirectional's equilibrium vibration according to an embodiment of the present invention；

Figure 31 is holographic three-dimensional sound pick-up (or player) according to an embodiment of the present invention and the first schematic diagram of spherical wave；

Figure 32 is holographic three-dimensional sound pick-up (or player) according to an embodiment of the present invention and the second schematic diagram of spherical wave；

Figure 33 is holographic three-dimensional sound pick-up (or player) according to an embodiment of the present invention and spherical wave third schematic diagram；

Figure 34 A is that existing monophonic audio realizes schematic diagram；

Figure 34 B is that the holographic three-dimensional sound equipment of single channel of the embodiment of the present invention realizes technology schematic diagram；

Figure 35 A is the holographic three-dimensional acoustical device structural schematic diagram of the circular membrane structure of the embodiment of the present invention；

Figure 35 B is the holographic three-dimensional acoustical device structural schematic diagram of the equilateral triangle diaphragm structure of the embodiment of the present invention；

Figure 36 is omnidirectional's space structure voiceless sound short-circuit structure schematic diagram of the embodiment of the present invention；

Figure 37 A is existing structure wave field performance schematic diagram；

Figure 37 B is the performance schematic diagram of the holographic three-dimensional sound system structure of the embodiment of the present invention；

Figure 38 is the holographic three-dimensional pickup schematic illustration of multiple sound resource of the embodiment of the present invention；

Figure 39 A is that the holographic three-dimensional sound system of the embodiment of the present invention sings effect diagram one loudly；

Figure 39 B is existing stereo system technology image defects schematic diagram one；

Figure 40 A is that the breath stereo system of the embodiment of the present invention sings effect diagram two loudly；

Figure 40 B is existing stereo system technology image defects schematic diagram two；

Figure 41 is the vertical combination diagram of holographic three-dimensional sound equipment of the embodiment of the present invention.

Specific embodiment

With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this The embodiment of invention, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, belongs to protection scope of the present invention.

Fig. 4 is the holographic three-dimensional sound system schematic diagram of the embodiment of the present invention, as shown in figure 4, the holographic three-dimensional sound equipment system System includes: multi-channel sound signal generation system 401, at least one first multi-channel audio power amplification system 402, system recorder memory 403, the channel m preamplifier 404, at least one second multi-channel audio power amplification system 405 and at least a multichannel is holographic three-dimensional Player 406.

Multi-channel sound signal generation system 401 connects the first multi-channel audio power amplifier system by a plurality of voice-frequency cable 407 System 402, the item number of voice-frequency cable depend on port number, and every voice-frequency cable transmits the voice signal in a channel.

First multi-channel audio power amplification system 402 passes through a plurality of 408 linkage record storage system 403 of voice-frequency cable, audio The item number of cable 408 depends on port number, and every voice-frequency cable transmits the voice signal in a channel.

The quantity of first multi-channel audio power amplification system 402 can be decided by the port number of itself, if its port number is M, the quantity of the first multi-channel audio power amplification system 402 is 1, if its port number isFirst multi-channel audio power amplification system 402 quantity is 2.

Second multi-channel audio power amplification system 405 passes through a plurality of holographic three-dimensional player 406 of 409 multichannel of voice-frequency cable, The item number of cable depends on port number, and every voice-frequency cable transmits the voice signal in a channel.

Second multi-channel audio power amplification system, 405 quantity can be decided by the port number of itself, if its port number is m, The quantity of second multi-channel audio power amplification system 405 is 1, if its port number isSecond multi-channel audio power amplification system 405 Quantity be 2.

Multi-channel sound signal generation system 401 is for generating m channel sound electric signal；Wherein, m be >=4, and m be 4 or 6 integral multiple.Such as m can be 4,6,8,12,16,18,24,28,30 etc..

As shown in figure 5, the first multi-channel audio power amplification system 402 includes multiple groups by the first single channel preamplifier and the First amplifying circuit 500 of one power amplifier composition, every group of 500 receiving channel voice signal generation system of the first amplifying circuit The 401 wherein channel sound electric signals generated simultaneously amplify.

System recorder memory 403 connects the first multi-channel audio power amplification system 402, for storing amplified m channel sound Sound electric signal.When it is implemented, system recorder memory 403 can be hard disk, the memories such as flash memory.

404 linkage record storage system 403 of the channel m preamplifier, the m channel sound electric signal for that will read carry out Amplify again.

As shown in fig. 6, the second multi-channel audio power amplification system 405 connects the channel m preamplifier 404, the second multichannel Audio power amplification system 405 includes the second amplifying circuit 600 that multiple groups are made of the second preamplifier and the second power amplifier, Every group of second amplifying circuit 600 is received through the amplified wherein channel sound electric signal of the channel m preamplifier 405 and is carried out Amplification.

Each channel of the holographic three-dimensional player 406 of multichannel connects wherein one group of second amplifying circuit 600, is used for basis Amplified m channel sound electric signal carries out playback again.

Holographic three-dimensional 406 quantity of player of multichannel can be decided by the port number of itself, more if its port number is m The quantity of the holographic three-dimensional player 406 in channel is 1, if its port number isThe quantity of the holographic three-dimensional player 406 of multichannel It is 2.

In one embodiment, as shown in fig. 7, the holographic three-dimensional sound system of the embodiment of the present invention can also include: that broadcast connects Demodulating and decoding system 701 is received, is connected between system recorder memory 403 and the channel m preamplifier 404.

In one embodiment, as shown in figure 8, broadcast reception demodulating and decoding system 701 includes:

Encoder 801, for being encoded to single channel sound electric signal to m channel sound electric signal；

Modulator 802 connects encoder, for being modulated to the single channel sound electric signal after coding；

Transmitting station 803, is connected to modulator, for emitting modulated single channel sound modulation signal；

Receiver 804 connects transmitting station, receives the single channel sound modulation signal of transmitting station transmitting；

Demodulator 805 connects receiver, for demodulating to single channel sound modulation signal；

Decoder 806 connects demodulator, for the single channel sound electric signal after demodulation to be decoded as m channel sound electricity Signal.

In one embodiment, as shown in figure 9, multi-channel sound signal generation system 401 includes: two-channel stereo equipment 901, filter 902, splitter 903 and phase splitter 904.

For two-channel stereo equipment 901 for generating two-channel stereo, two-channel stereo equipment 901 can be any The equipment for generating two-channel stereo, such as computer, radio, mobile phone, mp3 electronic equipment.

Filter 902 connects two-channel stereo equipment 901, for being filtered to two-channel stereo.

Splitter 903 is used to for filtered two-channel stereo being divided into m channel sound electric signal, and m can be 4 times Number.

The sound telecommunications in each channel in m channel sound electric signal that phase splitter 904 is used to obtain splitter Phase hologram is carried out number respectively, obtains the channel m holographic signal.

Splitter 903 and phase splitter 904 constitute channel expansion equipment, obtain the channel m according to two-channel stereo Holographic signal.

In one embodiment, phase splitter 904 can be made of phase shifter and multichannel output circuit, phase shifter for pair Each independent phase shift in channel, multichannel output circuit are used to export the channel m holographic signal.

In one embodiment, as shown in Figure 10 A, multi-channel sound signal generation system includes: twoChannel is holographic three-dimensional Sound pick-up 1001.First multi-channel audio power amplification system 402 can be m channel audio power amplification system, or two firstChannel audio power amplification system 1002.Second multi-channel audio power amplification system 405 can be the second m channel audio power amplification system, It may be two secondChannel audio power amplification system.In addition, by taking positive tetrahedron as an example, 1003 be four-way sound in Figure 10 A Frequency cable.Figure 10 B is the holographic three-dimensional sound system electromechanics logical relation schematic diagram in 8 channel of two-way of the embodiment of the present invention.

In the embodiment of the present invention, the integral multiple that m is 4, the present invention is only illustrated with m for 8.Figure 11 is real according to the present invention The structural schematic diagram of the holographic three-dimensional sound pick-up of multichannel of example is applied, as shown in figure 11, the holographic three-dimensional sound pick-up of the multichannel includes: Multiple sound pick-ups (such as can be pickup vibrating diaphragm) and support construction, the support construction are used to support multiple sound pick-ups, so that often The equivalent operation face of a sound pick-up is located on one of face of a regular polygon, in each sound pick-up equivalent operation face The center in the corresponding face of the heart is overlapped.The area equation in the equivalent operation face of multiple sound pick-ups.

Sound pick-up shown in Figure 11 is circular configuration, and in a particular application, the shape of sound pick-up is not limited to that, is compared The sound pick-up of common also equilateral triangle, Figure 12 is that another structure of holographic three-dimensional sound pick-up according to an embodiment of the present invention is shown It is intended to, as shown in figure 12, which includes: the sound pick-up and support construction of multiple equilateral triangles.

It should be noted that it is entity structure that above-mentioned regular polygon, which is not, but Virtual space structure, it is intended to description is more Positional relationship between a sound pick-up.

Present invention design is specific respectively to impartial balance space structure, to realize the holographic three-dimensional pickup to sound pick-up, shape At completely new holographic three-dimensional pickup technology.

The support construction of holographic three-dimensional sound pick-up can be based on Demand Design at arbitrary shape, and the present invention does not limit this It is fixed, as long as can guarantee each to equal isoequilibrium.Preferably, it can be designed as regular polygon shape, regular polygon can be positive n Face body, m are the integral multiple of n, and n can be 4,6,8,12,20 etc., such as: positive tetrahedron shape, regular hexahedron shape, positive octahedral Shape etc..The size of regular polygon support construction is generally higher than above-mentioned virtual regular polygon.Preferably, regular polygon supports Each face of structure can change as arbitrary surface, to meet different demands.The rigidity of support construction is related to pickup effect, Therefore support construction can select different materials based on demand.

Sound pick-up in the present embodiment can be capacitor-type acoustical pick-up, electromagnetic type sound pick-up, piezo-electric type sound pick-up or stay Polar body type sound pick-up.It is of course also possible to be other kinds of sound pick-up, as long as can be worked normally in holographic three-dimensional sound pick-up , of the invention without limitation.

Structure in order to guarantee holographic three-dimensional sound pick-up is relatively firm, can design sound pick-up adjacent in multiple sound pick-ups It contacts with each other, realization is fastenedly connected, to play the role of supporting mutually.In Figure 12, due to the restriction of positive tetrahedron structure, appoint It anticipates and all contacts with each other between two sound pick-ups.Under the premise of multiple sound pick-ups are connected and are fastened, the support of holographic three-dimensional sound pick-up Structure may be designed as the inscribe ball of the surrounded structure of multiple sound pick-ups, as shown in fig. 13 that the preferred knot of holographic three-dimensional sound pick-up Structure schematic diagram, so that the size of holographic three-dimensional sound pick-up is reduced on the basis of guaranteeing holographic three-dimensional sound pick-up fastening structure, Reduce occupied space.

It is another preferred structure schematic diagram of holographic three-dimensional sound pick-up shown in Figure 14, it is as shown in figure 14, holographic three-dimensional to pick up The size of each sound pick-up is identical in sound device, and the specific size of size may be set according to actual conditions, such as can design ruler Very little lesser sound pick-up is connected between each sound pick-up by bracket, so that the equivalent operation face of multiple sound pick-ups is located at On one of face of one regular polygon.

It should be noted that holographic three-dimensional sound pick-up provided by the invention be the more axis based on virtual regular polygon (i.e. The star-like axis of solid that the line of centres in the body center of regular polygon and each face is constituted) the solid space balance of dividing equally that is formed ties Structure.The body center and the center in each face of virtual regular polygon are separately connected, and the axis on each face are formed, in the coaxial of each axis One sound pick-up of place's installation, with wave length of sound with scale, amplitude-frequency response and own axes and sound wave direction of vibration Between the relationship of angle theta be approximately out (t)=A (t) cos θ, wherein above-mentioned axis is dummy line, to illustrate positional relationship, A It (t) is response of the sound pick-up in θ=0 to sound wave.As long as having the sound pick-up of above-mentioned cos θ relationship, can make has this The holographic three-dimensional sound pick-up of invention directional characteristic, the present invention do not do be described in detail one by one herein.

It include multiple sound pick-ups in holographic three-dimensional sound pick-up, each sound pick-up is provided with positive and negative electrode, each sound pick-up On positive electrode as signal output port, the negative electrode of the multiple sound pick-up can be total to ground wire.Below with holographic three-dimensional pickup Including being illustrated for four sound pick-ups in device.Figure 15 is that output schematic diagram is surveyed according to the single channel system of the relevant technologies, As shown in figure 15, only single track power signal exports monophonic system all the way.Figure 16 is according to an embodiment of the present invention holographic vertical Body sound pick-up actual measurement output schematic diagram, as shown in figure 16, holographic three-dimensional sound pick-up share four holographic three-dimensional electric signal outputs.Often There are different phase and amplitude-frequency response in road, and the full integral of four holographic three-dimensional electric signals is exactly the divergence response to acoustic wavefield, To realize holographic three-dimensional pickup effect.

Holographic three-dimensional sound pick-up can also be arranged translucent shell (being generally made of metal mesh), multiple sound pick-ups and support knot Structure is placed on translucent interior of shell.Open space near field signal-to-noise ratio is high, the high sensitivity of enclosure space.Figure 17 is according to the present invention The translucent casing appearance schematic diagram of the holographic three-dimensional sound pick-up of embodiment, as shown in figure 17, multiple sound pick-ups and support construction are put It sets in translucent interior of shell, and insulate with translucent outer shell phase.Translucent shell can be made of metal mesh, be provided with letter on translucent shell Number string holes, the signal output line and ground wire of electrode pass through the signal string holes, consequently facilitating signal output line is output to translucent shell Outside, effectively transmitted signal.In order to guarantee the gas permeability of holographic three-dimensional sound pick-up, settable venthole on translucent shell, such as Multiple small ventholes are uniformly arranged in translucent case surface.It is multiple in order to by the support construction of holographic three-dimensional sound pick-up and thereon Sound pick-up is firm to be placed in translucent shell, the shape of support construction can be designed as fitting easily into the shape of translucent shell.It is logical The preferred embodiment is crossed, can protect sound pick-up, consolidates holographic three-dimensional sound pick-up, enhances the sensitive of holographic three-dimensional sound pick-up Degree, to ensure holographic three-dimensional pickup effect.

In order to guarantee holographic three-dimensional pickup effect, support construction and translucent shell generally use anti-resonance material to make.

In the actual operation process, since holographic three-dimensional sound pick-up needs that holographic three-dimensional player is cooperated to be used together, it is Both guarantee to match and reach best stereo acoustic effect, the trident directions that two short one grow can be sets on translucent shell and referred to Mark, is used to indicate the placement position of holographic three-dimensional sound pick-up.To guarantee that there are two the intersections in face corresponding to adjacent sound pick-up In vertical plane.

It, can be by positive four typically, for the holographic three-dimensional sound pick-up for having four sound pick-ups (constituting positive tetrahedron structure) One apex angle of face body structure is downwards, horizontal positioned with one of sound pick-up in four sound pick-ups of guarantee, the sound pick-up The opposite direction of the angular bisector at an angle, that is, may be configured as above-mentioned direction on the equilateral triangle face of corresponding positive tetrahedron structure The direction of index.It is of course also possible to other directions are arranged, the invention is not limited in this regard, as long as holographic three-dimensional sound pick-up with The setting rule of the cardinal direction marker of holographic three-dimensional player is identical.Figure 18 is according to an embodiment of the present invention holographic three-dimensional picks up The cardinal direction marker schematic diagram of sound device, as shown in figure 18, the plane where horizontal positioned sound pick-up are provided with a cardinal direction marker, So that holographic three-dimensional sound pick-up is put with holographic three-dimensional player towards the same orientation, best stereo acoustic effect is realized.

From the above description it is found that the present invention, which constructs three-dimensional space multi-panel omnidirectional's equilibrium vibration, picks up structure, Realize that sound wave full information picks up technology.Holographic three-dimensional sound pick-up of the invention is the solid designed according to divergence theorem of Gauss Space-closed polyhedral structure.Since most simple balanced stereoeffect is positive tetrahedron, generally using it as preferable space frame Frame, physics realization are easy the most.Four faces with positive tetrahedron are the position of reference, dispose acoustic-electric to convert vibrating diaphragm device respectively (i.e. sound pick-up).

Figure 19 is the operation principle schematic diagram of the holographic three-dimensional sound pick-up of two-way according to an embodiment of the present invention, such as Figure 19 institute Show, real stereo pickup can be achieved in left holographic three-dimensional sound pick-up and right holographic three-dimensional sound pick-up.The present invention realize including The Holographic test of sound wave field including wave direction of vibration is laid a good foundation for holographic three-dimensional sound technique.Holographic three-dimensional sound equipment The single-path architecture of technology just has the response to the sound source of front and back different directions up and down, intensity and phase on each face All different, playback can continue the true wavefield direction at record scene, and could form acoustic image in human brain in the prior art Stereophonic sound system is entirely different in principle.It is the part reproduction of live sound field.If holographic three-dimensional sound technique uses Double path system, so that it may the positioning for further realizing the lateral broadening and depth of phonotape and videotape, compared with left-right stereo in traditional plane System has 3 D stereo acoustics.

To sum up, following technical effect may be implemented in the holographic three-dimensional sound pick-up of the embodiment of the present invention:

1) pneumatic compression working method, acoustoelectric electroacoustic high conversion efficiency；

2) without acoustic short circuit, fidelity is high；

3) when device designs, acoustic impedance match is realized using enclosure space elasticity, can further improve efficiency and fidelity；

4) single-path system just has certain three-dimensional stereo effect, and there are also certain far and near height identifications；

5) double path system has left and right, far and near, height real tri-dimension sound effective value, better than traditional binaural skill Art；

6) each channel can carry out a variety of mathematics or electrical plus-minus, form a variety of special sound field reinforcing effects.

Figure 20 is the structural schematic diagram of the holographic three-dimensional loudspeaker of the embodiment of the present invention, and as shown in figure 20, this is holographic three-dimensional Loudspeaker includes: multiple loudspeakers and support construction, which is used to support multiple loudspeakers, so that each loudspeaker Equivalent operation face is located on one of face of a regular polygon, and the center in each loudspeaker equivalent operation face is corresponding Face center be overlapped.The area equation in the equivalent operation face of multiple loudspeakers.

It should be noted that it is entity structure that above-mentioned regular polygon, which is not, but Virtual space structure, it is intended to description is more Positional relationship between a loudspeaker.

The characteristics of present invention is propagated according to sound wave with the elastic expandable of air dielectric, using Gauss divergence formula as foundation, if A kind of structure with space omnidirectional point direction driving fluid media (medium) vibration has been counted, which is each to impartial balance space structure, Two aspects of power transmitting and directionality to fluctuation are improved, to achieve the purpose that the reconstruction of hologram of acoustic wavefield.

The support construction of holographic three-dimensional loudspeaker can be based on Demand Design at arbitrary shape, and the present invention does not limit this It is fixed, as long as can guarantee each to equal isoequilibrium.Preferably, it can be designed as regular polygon shape, such as: positive tetrahedron shape Shape, regular hexahedron shape, regular octahedron shape etc., Figure 20 is illustrated by taking positive tetrahedron shape as an example.Regular polygon branch The size of support structure is generally higher than above-mentioned virtual regular polygon.Preferably, each face of regular polygon support construction can change Become arbitrary surface, to meet different demands.The rigidity of support construction is related to playback effect, therefore support construction can be based on Demand selects different materials.

Loudspeaker in the present embodiment can be capacitive loudspeaker, electromagnetic type loudspeaker, piezoelectric loudspeaker or quiet Electric type loudspeaker.It is of course also possible to be other kinds of loudspeaker, it is as long as can be worked normally in holographic three-dimensional loudspeaker Can, the present invention is without limitation.It is electromagnetic type loudspeaker shown in Figure 20 in the present embodiment.

Structure in order to guarantee holographic three-dimensional loudspeaker is relatively firm, can design loudspeaker adjacent in multiple loudspeakers It contacts with each other, realization is fastenedly connected to play the role of supporting mutually.In Figure 20, due to the restriction of positive tetrahedron structure, appoint It anticipates and all contacts with each other between two loudspeakers.Preferably, the empty portions of multiple loudspeakers can be closed, it is holographic vertical to improve The sensitivity of body loudspeaker.Under the premise of multiple loudspeakers are connected and fastened, the support construction of holographic three-dimensional loudspeaker can be designed The inscribe ball of structure is surrounded by multiple loudspeakers, the preferred structure schematic diagram of holographic three-dimensional loudspeaker as shown in figure 21, To reduce the size of holographic three-dimensional loudspeaker on the basis of guaranteeing the fastening of holographic three-dimensional loadspeaker structure, reduces and occupy Space.In addition, the support construction in the present embodiment can be formed by the self framework composition of single loudspeaker, material is generally adopted It is made of anti-resonance material, thus the fastening structure of the holographic three-dimensional loudspeaker of effective guarantee.

It should be noted that holographic three-dimensional loudspeaker provided by the invention be the more axis based on virtual regular polygon (i.e. The star-like axis of solid that the line of centres in the body center of regular polygon and each face is constituted) the solid space balance of dividing equally that is formed ties Structure.The body center and the center in each face of virtual regular polygon are separately connected, and the axis on each face are formed, in the coaxial of each axis One loudspeaker of place's installation, the relationship of angle theta is out (t)=A between amplitude-frequency response and own axes and sound wave direction of vibration (t) cos θ, wherein above-mentioned axis is dummy line, to illustrate positional relationship.A (t) is for loudspeaker in θ=0 to the sound of sound wave It answers.As long as having the loudspeaker of approximate above-mentioned cos θ relationship, can making, there is the holographic three-dimensional of directional characteristic of the present invention to raise Sound device, the present invention do not do be described in detail one by one herein.

It include multiple loudspeakers in holographic three-dimensional loudspeaker, each loudspeaker is provided with electrode, on each loudspeaker Electrode is as signal input port.Signal string holes is provided in support construction, the signal input line of electrode passes through the signal string holes, Consequently facilitating effectively transmitted signal.It is illustrated for including four loudspeakers in holographic three-dimensional loudspeaker below.Figure 22 is Output schematic diagram is surveyed according to the single channel system of the relevant technologies, as shown in figure 22, monophonic system only has single track power all the way Signal output.Figure 23 is holographic three-dimensional loudspeaker actual measurement output schematic diagram according to an embodiment of the present invention, as shown in figure 23, holographic Stereoloudspeaker shares the different holographic three-dimensional power signal output of four phase amplitudes, has direction in space characteristic.Four is complete The full integral of breath stereo power signal is exactly the divergence driving to acoustic wavefield, thus realize holographic three-dimensional playback effect, due to Its mechanical characteristics is identical as sound wave, and does not have sound short circuit problem, the system for being easy to make more high tone quality.

In the actual operation process, since holographic three-dimensional loudspeaker needs that holographic three-dimensional sound pick-up is cooperated to be used together, it is Both guarantee to match and reach best stereo acoustic effect, two short one long trident directions can be set on the support structure and referred to Mark, is used to indicate the placement position of holographic three-dimensional loudspeaker.

It, can be by positive four typically, for the holographic three-dimensional loudspeaker for having four loudspeakers (constituting positive tetrahedron structure) One apex angle of face body structure is downwards, horizontal positioned with one of loudspeaker in four loudspeakers of guarantee, the loudspeaker The opposite direction of the angular bisector at an angle, that is, may be configured as above-mentioned direction on the equilateral triangle face of corresponding positive tetrahedron structure The direction of index.It is of course also possible to other directions are arranged, the invention is not limited in this regard, as long as holographic three-dimensional loudspeaker with The setting rule of the cardinal direction marker of holographic three-dimensional player is identical.Figure 24 is according to an embodiment of the present invention holographic three-dimensional raises The cardinal direction marker schematic diagram of sound device, as shown in figure 24, the plane where horizontal positioned loudspeaker are provided with a two short length Trident cardinal direction marker realize best so that holographic three-dimensional loudspeaker is put with holographic three-dimensional player towards the same orientation Stereo acoustic effect.

From the above description it is found that the present invention constructs three-dimensional space multi-panel omnidirectional's equilibrium vibration playback structure, Realize sound wave full information playback technology.Holographic three-dimensional loudspeaker of the invention is the solid designed according to divergence theorem of Gauss Space-closed polyhedral structure.Since most simple balanced stereoeffect is positive tetrahedron, generally using it as preferable space frame Frame, physics realization are easy the most.Four faces with positive tetrahedron are the position of reference, dispose electro-acoustic transducing device (to raise respectively Sound device).

Figure 25 is the operation principle schematic diagram of the holographic three-dimensional loudspeaker of two-way according to an embodiment of the present invention, such as Figure 25 institute Show, really three-dimensional playback in zonule can be achieved in left holographic three-dimensional loudspeaker and right holographic three-dimensional loudspeaker, and left and right road exists The mutual cooperation in space acts on, so that it may realize that the physics wave field of greater room reproduces.The present invention is realized including wave direction of vibration The Holographic test of sound wave field inside is laid a good foundation for holographic three-dimensional sound technique.The single channel of holographic three-dimensional sound technique Structure just has the response to the sound source of front and back different directions up and down, and intensity and phase on each face is all different, returns The true wavefield direction that can continue record scene is put, with the stereophonic sound system that could form acoustic image in human brain in the prior art It is entirely different in principle.It is the part reproduction of live sound field.If holographic three-dimensional sound technique is using more than two-way being System, so that it may the positioning for further realizing the lateral broadening and depth of phonotape and videotape, compared with left-right stereo system in traditional plane, tool There is more true 3 D stereo acoustics.

The present invention is by two sets or more of the multiple groups loudspeaker with directional characteristic, with the spy of approaching simulation scene wavefront surface Sign is that principle does Spatial Coupling, carries out the playback of physics sound field, will obtain the physics source of sound more three-dimensional than the prior art and is imaged, thus It forms completely new holographic wave field and reproduces sound technique.For multiple loudspeakers in holographic three-dimensional loudspeaker, can carry out simple Structure is improved, and introduces holographic three-dimensional coil-moving speaker below by preferred embodiment.

The present embodiment assembles holographic three-dimensional coil-moving speaker using finished product, the hollow sphere that one is made of speaker material Cabinet opens circular hole on compartment equalization four-vector position, four traditional high pliable loudspeakers of Whole frequency band is installed on circular hole, shape At enclosure space.Directionality defines same with upper example.The present embodiment can be assembled with existing finished speaker and be realized, be easy production.By Have stronger elastic " damping " (being in fact exactly the conversion of acoustical power) in interior space-closed to vibration, when production will consider cabinet appearance The long-pending relationship with frequency, biggish volume have lower resonance frequency, if reduce former loudspeaker voice coil suspension (playing wave) and The damping (namely increasing pliable) of cone side structure, can be further improved effect.

Figure 26 is holographic three-dimensional coil-moving speaker first structure diagram according to an embodiment of the present invention, and Figure 27 is basis The second structural schematic diagram of holographic three-dimensional coil-moving speaker of the embodiment of the present invention, as shown in figures 26 and 27, by conventional loudspeakers Frame is changed to shallow basin equilateral triangle by cone, and four speaker frame assemblings can obtain positive tetrahedron structure.Frame junction is not Stay ventilative gap.Magnetic structure can built-in also exterior.The design of sound basin also becomes trigone equilateral triangle from circular cone and shallowly bores.Voice coil branch Frame and sound basin side are using high pliable structure.Suitable down-lead bracket is reserved on holographic three-dimensional coil-moving speaker, one after assembling Angle disposes the stablize fixed bracket vertical with the positive triangle face faced (to illustrate in Figure 26 with the straight line between four loudspeakers Illustrate), the holographic three-dimensional external metal mesh ball protection of coil-moving speaker can be made into a holographic three-dimensional moving-coil type loudspeaking Device.It is the external structure of four speaker heads shown in Figure 26, is the structure built in four speaker heads shown in Figure 27, due to It is the built-in setting of sound head, therefore is not drawn into a loudspeaker at top in Figure 27, only illustrates other three loudspeakers.

The present invention designs specific space multi-panel omnidirectional vibrational structure according to the divergence formula of elastic wave prorogation theory and field theory Loudspeaker, with realize to the frequency of acoustic wavefield, amplitude, phase, especially fluctuate the field of force direction of vibration and wave field it is empty Between distribution characteristics playback.The directional information of sound wave is not only increased, the income of certain efficiency and fidelity can be also obtained.

Air dielectric sound field information including direction of vibration attribute is changed into holographic electric signal by the present invention, and amplification Holographic electric signal, drives air dielectric in a manner of breathing, and sound short circuit problem is just not present, reduces influence factor, sound quality Corresponding alleviation is just had with the contradiction of efficiency；To simulate the playback system of live wave direction of vibration, the side of physics wave field is reproduced The construction of formula realization stereophonic field.Therefore, each attribute that the efficiency of holographic three-dimensional loudspeaker, Frequency Response, wave field reproduce, all The raising or extension of respective degrees will be had.

Holographic three-dimensional loudspeaker of the invention can press the holographic three-dimensional loudspeaker of multiple groups according to different audition demands Acoustic propagation rule plays back effect in space arrangement, available sound field truer than traditional technology, stable, deep, referred to as entirely Three-dimensional playback technology is ceased, such as the two-way arenas basic model of similar conventional stereo sound, preceding multichannel music hall type, preceding more may be implemented The three-dimensional playback effect of the diversified forms such as more movie theatre circulating type afterwards.

Figure 28 is the theater effect schematic diagram of the holographic three-dimensional loudspeaker of two-way according to an embodiment of the present invention, such as Figure 28 institute Show, the graphical representation theater audiences of bird shape in figure, left holographic three-dimensional loudspeaker and right holographic three-dimensional loudspeaker cooperation are constituted Arenas stereoscopic effect.

Figure 29 is the rear circular movie theatre effect diagram of the holographic three-dimensional loudspeaker of multichannel according to an embodiment of the present invention, is such as schemed Shown in 29, the graphical representation theater viewers of bird shape in figure, it is left front after holographic three-dimensional loudspeaker and right front and back is holographic three-dimensional raises The cooperation of sound device constitutes movie theatre stereo-circulation effect.

Holographic three-dimensional playback technology is one kind with three-dimensional space multi-panel omnidirectional vibrational structure, imitates the mechanics mould of air vibration Formula realizes the technology that sound wave full information playback is carried out in a manner of aeroelastic dielectric breathing.The full information or sound wave of sound wave Holographic three-dimensional signal, comprising: amplitude, frequency, phase, divergence, wave direction of vibration.Divergence therein, that is, the breathing of air. Breathing is referred to as divergence in mathematics, that is to say the drive mechanism of longitudinal wave, can be provided by divergence Gauss theorem.Breathing is space each side To the closing integrating effect of movement.It is driven or is detected with enclosure space omnidirectional, so that it may realize that divergence operates.Here it is holographies The theoretical foundation of stereo system technological invention.

The present invention has following two major features in structure: 1, space-closed drives；2, space omnidirectional drives.Therefore, it imitates Just with following two major features on fruit: 1, the efficiency of energy conversion and transmitting can be improved；2, the directivity information of wave field can be played back.

To sum up, the following technical effects are achieved by the present invention:

1) the pneumatic contact of omnidirectional, can reduce damping loss, and the playback efficiency of sound increases；

2) closing or hemi-closure space reflex cabinet technology are not needed to improve efficiency, influence factor tails off, Frequency Response With regard to relatively flat；

3) design structure has taken into account wave field in the directionality of front and back three-dimensional space up and down, can build more broad Deep stereophonic field；

4) physics sound field three-dimensional imaging, it is substantially unrelated with the position of auditor and posture, not by the position of auditor and appearance State is influenced.

Figure 30 is that structural schematic diagram is picked up in omnidirectional's equilibrium vibration according to an embodiment of the present invention, as shown in figure 30, by positive four Wherein one side is horizontal is upward the first face 1 for face body, remaining several equilateral triangle face is respectively set to the second face 2, third face 3 and the On four sides 4.The normal in this four faces just constitutes vector and direction vector that three-dimensional space is divided equally.Knot is picked up in omnidirectional's equilibrium vibration Structure is picked up at least three vectors, so that it may unique vector is determined, as long as each component etc., than playback, vibration vector closes naturally At which achieves directionality.In addition another vector, not only strengthens directionality, moreover it is possible to the breathing scalar of sound wave is embodied, Obtain more complete wave field information.The full integral of each vector is scalar, be equivalent to directly done using the breathing elasticity of air it is negative It carries, efficiency and fidelity can be improved；Respectively to vector and vector, have wave field directional characteristic, have wave field physics imaging function. Compared with traditional technology, the present invention has more richer information of acoustic wave completely, be a kind of by three-dimensional point thinking development is said three-dimensional body The sound technique of thinking.

Figure 31 is holographic three-dimensional sound pick-up (or player) according to an embodiment of the present invention and the first schematic diagram of spherical wave, figure 32 be holographic three-dimensional sound pick-up (or player) according to an embodiment of the present invention and the second schematic diagram of ellipsoid surface wave, Figure 33 are bases The holographic three-dimensional sound pick-up (or player) and ellipsoid surface wave third schematic diagram of the embodiment of the present invention, as shown in figure 31, if entirely Each vector magnitude for ceasing stereo pickup device (or player) is identical, then spherical wave is positive orange surface wave；As shown in figure 32, if Each vector magnitude of holographic three-dimensional sound pick-up (or player) is different, has the metamorphosis of wavefront surface, namely have three-dimensional Spatial directivity, then spherical wave is similar oval ball surface wave；As shown in figure 33, be collection in worksite wave field generate spherical surface Wave, it then follows the equilibrium relation of medium internal force is similar to expand on spherical surface and the direction for transmitting the centre of sphere to fluctuation elapses.

Using Gauss theorem as theoretical basis, the holographic physical for constructing acoustic wavefield reproduces the embodiment of the present invention.The present invention The full information or acoustic holographic three-dimensional signal of the sound wave of embodiment, comprising: amplitude, frequency, phase, divergence, wave vibration side To.Divergence therein refers to the breathing of air, that is to say the drive mechanism of longitudinal wave.It can be provided by following divergence Gauss theorem.

According to divergence theorem of Gauss:

Based on above-mentioned divergence theorem of Gauss, breathing is the closing integrating effect of space all directions movement.It is complete with enclosure space To driving or detection, so that it may realize that divergence operates.

The embodiment of the present invention is one kind with three-dimensional space multi-panel omnidirectional vibrational structure, imitates the mechanics mould of air vibration Formula --- realize the technology that pickup, recording, transmission and the playback of sound wave full information are carried out in a manner of aeroelastic dielectric breathing.

Based on above-mentioned analysis it is found that the holographic three-dimensional sound system of the embodiment of the present invention has a characteristic that in structure

1, the small space-closed of local or semiclosed driving；

2, the omnidirectional of the space of points picks up and drives.

Based on above-mentioned two major features, the holographic three-dimensional sound system of the embodiment of the present invention is had the advantages that

1, it is driven using aeroelastic identical with sound wave mechanism of production, the effect of energy conversion and transmitting not only can be improved Rate, sound performance are also more natural.

2, it can detect and play back the directivity information of wave field.

Since most simple balanced stereoeffect is positive tetrahedron, using it as preferable space frame, physics realization is most It is easy.The comprehensive effect of all directions has Gauss theorem characteristic, and efficiency and fidelity can be improved；It separates each to just there is wave field Directional characteristic has wave field physics imaging function.

Compared with the prior art, the holographic three-dimensional sound system of the embodiment of the present invention has more completely richer sound wave letter Breath is a kind of sound technique by three-dimensional point thinking development for said three-dimensional body thinking.

Directionality is utilized in the holographic three-dimensional sound system of the embodiment of the present invention, needs to be subject to the directionality of space vector Definition:

The regular polygon of divergence theorem of Gauss can be met for basic structure.By taking positive tetrahedron as an example: by its one side level Upward it is the first face, using the line at the geometric center in the face and one of angle as device direction, prolongs from the angle towards this angle Observation is stretched, the face where the equilateral triangle of the positive tetrahedron on the angle left side is the second face, and face where the equilateral triangle on the right side is the Three faces, the face where the equilateral triangle at the back side are fourth face.The normal in this four faces just constitutes the vector that three-dimensional space is divided equally And direction vector.

The present invention is series technique, is consisted of the following components:

1, holographic three-dimensional pickup system (holographic three-dimensional sound pick-up)

It is empty to pick up device position small size according to the solid space polyhedral structure that divergence Gauss theorem designs The acoustical-electrical transducer part of interior acoustic wavefield full information.

2, mating serial electronic equipment (such as the first multi-channel audio power amplification system 402, system recorder memory 403, the channel m Preamplifier 404 and the second multi-channel audio power amplification system 405 etc.).

To record, transmit, save, adjust, the holographic three-dimensional voice signal of power amplification, to guarantee holographic three-dimensional loudspeaker System can be realized the series electronic equipment of live sound wave field reproduction.Because the vector property of holographic three-dimensional technology is mainly in pickup Realize that single pass electronic circuit function and traditional technology are similar, are not using coding and decoding technology with the playback stage Under the conditions of, with the combination of a few set traditional circuits, required function can be realized.

3, holographic three-dimensional loudspeaker

According to the space structure of the solid space multi-panel vibrating diaphragm of divergence Gauss theorem design, to drive in limited bulk space The mode of air breathing plays back the electro-acoustic transducing device of acoustical vibration line vector and cubical expansion contracting oscillation power signal.

4, holographic three-dimensional sound system

Holographic three-dimensional microphone, mating serial electronic equipment holographic electrical power signal generated are inputted, is raised with holographic three-dimensional Sound device is basic component, the holographic three-dimensional sound equipment system that the two-way or four tunnels being composed according to the design of wave field characteristic are surround or more System, to realize the purpose for building more broad deep stereophonic field.

5, holographic three-dimensional coding/decoding system

Since single holographic acoustic-electric, electro-acoustic element have multiaspect signaling, traditional single channel single track transmission, which cannot meet, to be wanted It asks, it need multiple tracks realization single channel.Data volume and required equipment will increases at double.In large-scale application, and broadcast carries When wave is modulated, some inconvenience are understood.In order to solve this problem, the method that timesharing coding and decoding can be used.

The embodiment of the present invention is so-called " omnidirectional ", refers to that the signal on a position must have the direction greater than three or more. The present invention defines dividing into " channel " for different directions signal, on a position collection of all direction signals be combined into one " road " that is, Several group is combined into all the way.

When the embodiment of the present invention is embodied:

1, with two sets or more (depending on sound equipment works demand, such as four tunnels are surround) holographic three-dimensional pickup systems, acquisition is existing The multichannel Holographic fluctuation signal of field.

2, Holographic fluctuation signal is done into simple in-situ processing: dubs, amplifies, recording (digital simulation all can) and obtains to transmit The Holographic fluctuation data being stored on medium.

3, amplified with multichannel multi-channel electronic system, adjustment (denoising, frequency modification and phasing etc.), power amplification, It must can be used for the audio power signal of holographic three-dimensional playback system.

4, holographic three-dimensional audio power signal is applied to holographic three-dimensional playback system, obtains the holographic sound waves field of reproduction.

Illustrate that the holographic three-dimensional sound system of the embodiment of the present invention has compared with prior art below with reference to Figure 34 to Figure 41 Standby advantage.Figure 34 A is that existing monophonic audio realizes schematic diagram；Figure 34 B is the holographic three-dimensional sound of single channel of the embodiment of the present invention Ring realization technology schematic diagram；Figure 35 A is the holographic three-dimensional acoustical device structural representation of the circular membrane structure of the embodiment of the present invention Figure；Figure 35 B is the holographic three-dimensional acoustical device structural schematic diagram of the equilateral triangle diaphragm structure of the embodiment of the present invention；Figure 36 is this Omnidirectional's space structure voiceless sound short-circuit structure schematic diagram of inventive embodiments, by Figure 36 it is found that each vibrating diaphragm is the same as phase sounding shape Sound short circuit problem is not present at spherical wave；Figure 37 A is existing structure wave field performance schematic diagram, and Figure 37 B is the embodiment of the present invention Holographic three-dimensional sound system structure performance schematic diagram, by Figure 37 A and Figure 37 B can be seen that single vibrating diaphragm with solid combine vibrating diaphragm Wavefront surface difference generated；Figure 38 is the holographic three-dimensional pickup schematic illustration of multiple sound resource of the embodiment of the present invention, due to each vibration Film vibration vector is that space omnidirectional divides equally, and has the function of picking up wavefront surface normal section；Figure 39 A is the embodiment of the present invention Holographic three-dimensional sound system sings effect diagram one loudly, different location, and audio-video position is substantially motionless；Figure 39 B is existing three-dimensional sound Technology image defects schematic diagram one is rung, different location, audio-video position is different, as mobile with people；Figure 40 A is the embodiment of the present invention Holographic three-dimensional sound system sings effect diagram two loudly, after people's quarter body turn, still has three-dimensional sense, while also having altitude location Function；Figure 40 B is existing stereo system technology image defects schematic diagram two, turns round 90 degree, three-dimensional sense will disappear.Figure 41 is vertical To the combined holographic three-dimensional combined acoustics in two groups of left and right.This combined advantage is that the height positioning of phonotape and videotape is more accurate.

In conclusion the holographic three-dimensional sound system of the embodiment of the present invention has the advantage that

1, efficiency is higher

Using mechanical structure identical with air vibration, efficiency will improve naturally.There is no a sound short circuit problem, and into one Step improves efficiency.

2, fidelity is good

There is no sound short-circuit, does not need rear enclosed or paraphase technology to improve efficiency.There is no the length problem in paraphase path, Also the deterioration problem of frequency characteristic is just not present.As long as channel frequency characteristic and the frequency characteristic of acoustic device oscillating component are matched It is flat to carry out.

3, the wave field positioning of sound wave is true

Single-path architecture has the response (see Figure 34 A and Figure 34 B) to the sound source of front and back different directions up and down, each Intensity and phase on face is all different, and playback can continue the true wavefield direction at record scene.With the ability shape in human brain at present It is entirely different in principle at the stereophonic sound system of acoustic image, it is that the part of live sound field reproduces.

The present invention reuses double path system, so that it may the positioning for further realizing the lateral broadening and depth of phonotape and videotape, compared with existing Left-right stereo system in some planes, Yao Liti's is more, is really provided with the meaning of 3 D stereo, this is also that sound field reproduction is The no difference for real physics realization.(two-way is holographic three-dimensional preposition and two-way is holographic three-dimensional for four tunnel system of front and back of the invention Postposition), so that it may it realizes around the total space, namely: there is front and rear, left and right, distance, height, approach the sound of complete real space sense Acoustic system.

4, the combination of efficiency and fidelity

In traditional technology, in order to improve efficiency, often frequency of loss characteristic namely fidelity and swing to skill at such as fully sheathed case Art；In order to improve fidelity, and efficiency can be lost, such as vibrating diaphragm side, the damping of voice coil bullet wave suspension etc..

In the embodiment of the present invention, since closed air dielectric itself is both power receptor and acoustic resistance antibody, receiving Also damping, and the closing in this space are formed while power, inside and outside medium is communicated by vibrating diaphragm, elastomer communicates, with Closed voice box is different, energy loss very little.The damping of the suspension such as vibrating diaphragm side, voice coil bullet wave can moderately reduce, To which sensitivity or efficiency be merged to a certain extent with fidelity.

Based on above-mentioned analysis it is found that the present invention is worked in a manner of directly driving gaseous medium dilational vibration, electroacoustic conversion It is high-efficient；The noiseless short circuit problem of the present invention, can effectively solve efficiency, the contradiction between frequency characteristic and fidelity；Electro-acoustic element When design, the difference of the factors such as Q value, resonance frequency, compliance and traditional technology is can be considered in the present invention, to vibrational system and branch The characteristic of support structure adjusts accordingly, and can further improve efficiency and fidelity；Single-path system of the invention has certain three-dimensional Stereophonic effect, there are also certain far and near height identifications；Two-way omnidirectional system of the invention, which has, to be controlled, is far and near, height Real tri-dimension sound effective value, better than traditional binaural technology；Each channel of the present invention can also carry out a variety of mathematics or electrical Plus-minus, to form a variety of special sound field reinforcing effects.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any One or more embodiment or examples in can be combined in any suitable manner.

Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects Describe in detail it is bright, it should be understood that the above is only a specific embodiment of the present invention, the guarantor being not intended to limit the present invention Range is protected, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this Within the protection scope of invention.

Claims (10)

1. a kind of holographic three-dimensional sound system characterized by comprising multi-channel sound signal generation system, at least one first Multi-channel audio power amplification system, system recorder memory, the channel m preamplifier, at least one second multi-channel audio power amplification system And the holographic three-dimensional player of an at least multichannel；

The multi-channel sound signal generation system is for generating m channel sound electric signal；Wherein, m >=4, and m is 4 or 6 integers Times；

The first multi-channel audio power amplification system includes multiple groups by the first single channel preamplifier and the first power amplifier It is wherein one logical to receive that the channel sound signal generation system generates for first amplifying circuit of composition, every group of first amplifying circuit Road sound electric signal simultaneously amplifies；

The system recorder memory connects the first multi-channel audio power amplification system, for storing the amplified channel m Sound electric signal；

The channel m preamplifier connects the system recorder memory, is used for the amplified m channel sound electric signal Amplified again；

The second multi-channel audio power amplification system connects the channel m preamplifier, the second multi-channel audio power amplifier System includes the second amplifying circuit that multiple groups are made of the second preamplifier and the second power amplifier, and every group second is amplified electricity Road receives through the amplified wherein channel sound electric signal of the channel m preamplifier and amplifies；

Each channel of the holographic three-dimensional player of multichannel connects wherein one group of second amplifying circuit, puts again for basis M channel sound electric signal after big carries out playback.

2. holographic three-dimensional sound system according to claim 1, which is characterized in that the multiple channel acousto sound signal generates system System includes: the holographic three-dimensional sound pick-up of an at least multichannel, comprising: multiple sound pick-ups and support construction, the support construction are used for The multiple sound pick-up is supported, so that the equivalent operation face of each sound pick-up is located at one of them of a regular polygon On face, the center in the corresponding face in the center in each sound pick-up equivalent operation face is overlapped, and the number of sound pick-up and positive multi-panel The face number of body is identical.

3. holographic three-dimensional sound system according to claim 1, which is characterized in that the holographic three-dimensional player of multichannel It include: multiple loudspeakers and support construction, the support construction is used to support the multiple loudspeaker, so that each loudspeaking The equivalent operation face of device is located on one of face of a regular polygon, the center in each loudspeaker equivalent operation face and its The center in corresponding face is overlapped, and the number of loudspeaker is identical as the face number of regular polygon.

4. holographic three-dimensional sound system according to any one of claim 1-3, which is characterized in that further include: broadcast connects Demodulating and decoding system is received, is connected between the system recorder memory and the channel m preamplifier, the broadcast reception solution is reconciled Code system include:

Encoder, for being encoded to single channel sound electric signal to the m channel sound electric signal；

Modulator connects the encoder, for being modulated to the single channel sound electric signal after coding；

Transmitting station is connected to the modulator, for emitting the modulated single channel sound modulation signal；

Receiver connects the transmitting station, receives the single channel sound modulation signal of the transmitting station transmitting；

Demodulator connects the receiver, for demodulating to the single channel sound modulation signal；

Decoder connects the demodulator, for the single channel sound electric signal after demodulation to be decoded as m channel sound electricity Signal.

5. holographic three-dimensional sound system according to claim 1, which is characterized in that the multiple channel acousto sound signal generates system System includes:

Two-channel stereo equipment, for generating two-channel stereo；

Filter connects the two-channel stereo equipment, is filtered to the two-channel stereo；

Splitter, for the filtered two-channel stereo to be divided into m channel sound electric signal；

Phase splitter, the sound electricity in each channel in the m channel sound electric signal for obtaining the splitter Signal carries out phase hologram respectively, obtains the channel m holographic signal.

6. holographic three-dimensional sound system according to claim 2 or 3, which is characterized in that the regular polygon is positive the face n Body, and m is the integral multiple of n.

7. holographic three-dimensional sound system according to claim 2 or 3, which is characterized in that the support construction is positive multi-panel Support structure, each face of the regular polygon support construction are arbitrary surface or plane.

8. holographic three-dimensional sound system according to claim 2, which is characterized in that each sound pick-up is provided with positive negative electricity Pole, for the positive electrode on each sound pick-up as signal output port, the negative electrode of the multiple sound pick-up is total to ground wire.

9. holographic three-dimensional sound system according to claim 8, which is characterized in that the holographic three-dimensional sound pick-up also wraps Include: translucent shell is provided with two short one long trident cardinal direction markers on the translucent shell, is used to indicate described holographic three-dimensional pick up The placement position of sound device.

10. holographic three-dimensional sound system according to claim 3, which is characterized in that be provided with two in the support construction Short one long trident cardinal direction marker, is used to indicate the placement position of the holographic three-dimensional loudspeaker.