CN106454616A - Holographic stereo system - Google Patents

Holographic stereo system Download PDF

Info

Publication number
CN106454616A
CN106454616A CN201610751418.5A CN201610751418A CN106454616A CN 106454616 A CN106454616 A CN 106454616A CN 201610751418 A CN201610751418 A CN 201610751418A CN 106454616 A CN106454616 A CN 106454616A
Authority
CN
China
Prior art keywords
holographic
dimensional
channel
sound
pick
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610751418.5A
Other languages
Chinese (zh)
Other versions
CN106454616B (en
Inventor
陈立康
陈雯箐
吴小洲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to CN201610751418.5A priority Critical patent/CN106454616B/en
Publication of CN106454616A publication Critical patent/CN106454616A/en
Application granted granted Critical
Publication of CN106454616B publication Critical patent/CN106454616B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

The invention discloses a holographic stereo system. The system comprises a multichannel sound signal production system, a first multi-channel audio power amplifier system, a record and storage system, a m-channel pre-amplifier, a second multi-channel audio power amplifier system and a multi-channel holographic stereo sound producer; the multi-channel sound signal production system produces a m-channel sound electric signal; the first multi-channel audio power amplifier system receives and amplifies a multi-channel sound electric signal produced by the multi-channel sound signal production system; the record and storage system is connected with the first multi-channel audio power amplifier and used for storing the amplified m-channel sound electric signal; the m-channel pre-amplifier is connected with the record and storage system so as to amplify the amplified m-channel sound electric signal; the second multi-channel audio power amplifier system receives and amplifies the multi-channel sound electric signal amplified through the m-channel pre-amplifier; and the multi-channel holographic stereo sound producer is connected with the second multi-channel audio power amplifier system so as to produce sound according to the m-channel sound electric signal. The system disclosed by the invention can realize the reproduction of a multi-point omnidirectional holographic stereo physical sound field.

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 system.
Background technology
Sound equipment has that simulation biology is perceived by picture and physics wave field is rendered as two kinds of think ofs realizing the three-dimensional imaging of sound Road.
Biological sensation imaging method is the difference for simulating wave field in two ear position of human body, makes brain draw the sense of sound source position Feel.Technology is mainly realized by left and right sound volume difference at present, does not actually really realize the reproduction of wave field.Now with one kind Wear-type holography sound technique, in the way of sound field around phantom bead, realizes pickup and playback all around, but auditor must The earphone must be worn just holographic sound equipment (entirely around sound technique) effect, easily the presence of impact auditor and comfort.
Physics wave field reproducting method is reproduction acoustic wavefield in large range of space-time, and auditor is in the four-dimension In space, regardless of attitude, just there is naturally the sensation of solid.
The notable difference of above two method mainly has following three points：
Can the 1st, the enforcement difficulty of physics wave field reproducting method be larger, it is critical only that and keep wavefield directivity；
It is indefinite whether the 2nd, limitation of the position of auditor and attitude, i.e. phonotape and videotape are floated with walking about for auditor；
Whether the 3rd, limitation of depth and range, i.e. phonotape and videotape are can only appear in foil-like areas.
Existing sound equipment only possesses the pickup of the information such as the frequency to acoustical vibration, amplitude, phase place and playback function, does not possess Inspection to direction of vibration and wave field form is picked up and playback function.It is simply that lost the direction characteristic of fluctuation.Lose The reason for direction characteristic, in that with vibrating diaphragm direct detection and the working method of driving air dielectric.This working method is lost Mistake spatial directivity, the shallow floating of stereoscopic localized, inaccurate untrue, it is summarized as follows：
1) acoustic-electric, electro-acoustic conversion efficiency are low
Vibrating diaphragm directly drives air dielectric, and fluid is natural not to be vibrated to flowing around, and equivalent to shaking one's fists, impact air makes Not energetically, efficiency is certainly just low.Acoustic impedance mismatch is technically called.How to be solved with increasing the methods of mechanical damping at present Determine this problem, such as play ripple and vibrating diaphragm side arranges stronger damping etc..Mechanical damping is intended to expend energy, and have lost can dose-effect Rate just carries not high certainly.
2) efficiency is with the contradiction of fidelity than more serious
Figure 1A loses schematic diagram for single vibrating diaphragm directivity, and Figure 1B is single diaphragm structure sound short circuit schematic diagram, such as Figure 1A and Shown in Figure 1B, vibrating diaphragm direct drive air dielectric vibration, the acoustic pressure before and after vibrating diaphragm is antipodal, and this more enhances air and exists Flow and non-vibrating effect around vibrating diaphragm so that pickup loses directivity, playback short circuit efficiency is low.A little farther, acoustic pressure Just drastically decline, efficiency is very low, industry is called " sound short circuit ".
Prior art is with fully sheathed case or to swing to the method for case solving sound short circuit problem.After fully sheathed case have lost vibrating diaphragm Energy, less efficient；Case efficiency high is swung to, but the length of inverse direction route has stronger selecting frequency characteristic, and weight on frequency band Rebeating jumps, and causes frequency response to be deteriorated, this generates the contradiction of efficiency and fidelity.
3) loss spatial directivity, the shallow floating of stereoscopic localized, inaccurate untrue.
, also there is a defect in vibrating diaphragm direct drive or the vibration of detection air dielectric, be exactly that transformation process lost and shake Dynamic directivity, as shown in Figure 1A, Figure 1B, Fig. 2 and Fig. 3.In Fig. 2,201 is wavefront surface, and 202 is microphone vibrating diaphragm, acoustic wavefield warp After crossing microphone vibrating diaphragm, bcos (ω t-kx) cos θ is output as, wherein, cos (ω t-kx) is the fluctuation at microphone vibrating diaphragm, and ω is Circular frequency, it is wave number that t is time, k, and x is distance, and it is sensitivity that θ is angle, b, as shown in Figure 2, and single vibrating diaphragm acoustic-electric conversion, side Tropism θ is lost.
In conventional art, described directivity refers to tropism, refers to the relation between sensitivity and sonic propagation direction, The two directivity are meant that and are not quite similar.In the information that records, the direction of vibration is lain in amplitude, but It is unknown.In prior art, the incoming wave of any direction shape, is all that the vertical vibration of vibrating diaphragm face drives during playback, and ripple propagates one Segment distance, can be scattered with vibrating diaphragm midpoint as the center of circle, it is impossible to the spatial distribution form of accurate simulation scene acoustic wavefield, referring to Fig. 3 In, 301 is wavefront surface center of circle equivalent position, and 302 is vibrating diaphragm, during the conversion of one side vibrating diaphragm acoustic-electric, sound short circuit, field of force diverging efficiency Low, dead ahead wavefront surface is partial sphere, the sphere center of circle in vibrating diaphragm position after a while.Comprehensive now technology acoustic-electric and electroacoustic conversion are present Conversion efficiency is low to be lost with directivity, and several big defects of sound short circuit problem of speaker, to realizing clear stereo field Playback, be very unfavorable, it is inaccurate to have a positioning, far and near no level, and acoustic image is floated with LisPos and attitude, Yi Jisheng The light inelastic defect of tone level.
The problem of holographic three-dimensional pickup and playback cannot be realized for sound system in prior art, not yet proposition has at present The solution of effect.
Content of the invention
The invention provides a kind of holographic three-dimensional sound system, to reach the physics reconstruction of hologram of acoustic wavefield, realizes complete Breath stereo pickup and playback.
To achieve these goals, a kind of holographic three-dimensional sound system is embodiments provided, the holographic three-dimensional sound Acoustic system includes：Multi-channel sound signal generation system, at least one first multi-channel audio power amplification system, system recorder memory, m Passage 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 used for producing the m channel sound signal of telecommunication；Wherein, m >=4, and m is 4 or 6 Integral multiple；
The first multi-channel audio power amplification system includes multigroup to be put by the first single channel preamplifier and the first power First amplifying circuit of big device composition, receives the channel sound signal generation system per the first amplifying circuit of group and produces wherein The one channel sound signal of telecommunication is simultaneously amplified；
The system recorder memory connects the first multi-channel audio power amplification system, for storing the m after amplifying The channel sound signal of telecommunication；
The m passage preamplifier connects the system recorder memory, for by the m channel sound electricity after amplification Signal is amplified again；
The second multi-channel audio power amplification system connects the m passage preamplifier, second multi-channel audio Power amplification system includes multigroup the second amplifying circuit being made up of the second preamplifier and the second power amplifier, puts per group second Big circuit receives the wherein channel sound signal of telecommunication after amplifying through the m passage preamplifier and is amplified；
Each passage connection second amplifying circuit of one of which of the holographic three-dimensional player of the multichannel, for according to again The m channel sound signal of telecommunication after secondary amplification carries out playback.
In one embodiment, the multi-channel sound signal generation system includes：The holographic three-dimensional pick up of an at least multichannel, Including：Multiple pick ups and supporting construction, the supporting construction is used for supporting the plurality of pick up so that the plurality of pickup The equivalent operation face of device respectively be located at a regular polygon one of face on, the center in each pick up equivalent operation face and its The center superposition in corresponding face.
In one embodiment, the holographic three-dimensional player of the multichannel includes：Multiple speakers and supporting construction, the support Structure is used for supporting the plurality of speaker so that the equivalent operation face of the plurality of speaker is located at a regular polygon respectively On one of face, the center superposition in the corresponding face in the center in each speaker equivalent operation face.
In one embodiment, the holographic three-dimensional sound system also includes：Broadcast reception demodulating and decoding system, is connected to described Between system recorder memory and m passage preamplifier, the broadcast reception demodulating and decoding system includes：
Encoder, for being encoded to the single channel sound signal of telecommunication to the m channel sound signal of telecommunication；
Manipulator, connects the encoder, for being modulated to the single channel sound signal of telecommunication after coding；
Transmitting station, is connected to the manipulator, for launching the single channel sound signal of telecommunication after modulation；
Receptor, connects the transmitting station, receives the single channel sound modulation signal of the transmitting station transmitting；
Demodulator, connects the receptor, for being demodulated to the single channel sound modulation signal；
Decoder, connects the demodulator, for the single channel sound signal of telecommunication is decoded as m channel sound telecommunications Number.
In one embodiment, the multi-channel sound signal generation system be used for by existing stereo be converted to plan holographic three-dimensional Signal, wherein, the multi-channel sound signal generation system includes：
Two-channel stereo equipment, for producing two-channel stereo；
Wave filter, connects the two-channel stereo equipment, the two-channel stereo is filtered；
Shunt, for being divided into the m channel sound signal of telecommunication by the filtered two-channel stereo；
Phase splitter, for the sound of each passage in the m channel sound signal of telecommunication that obtains the shunt The sound signal of telecommunication carries out phase hologram respectively, obtains m passage holographic signal.
The holographic three-dimensional sound system of the embodiment of the present invention, with the sound to the sound source of different directions before and after up and down Answer, intensity in each direction and phase place are all different, playback can continue the true wavefield direction at record scene.Holographic three-dimensional pick up Sound device can pick up the direction in space phase property of live sound field, be holographic playback collection signal, such that it is able 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 raise one's voice Device can be realized holographic three-dimensional acoustics, be the last of holographic three-dimensional sound technique in the way of physics wave field local reproduces Link.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this Bright schematic description and description is used for explaining the present invention, does not constitute limitation of the invention.In the accompanying drawings：
Figure 1A loses schematic diagram for single vibrating diaphragm directivity of prior art；
Figure 1B is single diaphragm structure sound short circuit schematic diagram of prior art；
Fig. 2 is the microphone operation principle schematic diagram of prior art；
The acoustic pressure short circuit of the existing speaker of Fig. 3 and direction characteristic schematic diagram；
Fig. 4 is the structural representation of the holographic three-dimensional sound system of one embodiment of the invention；
Fig. 5 is the structural representation of the first multi-channel audio power amplification system of the embodiment of the present invention；
Fig. 6 is the structural representation of the second multi-channel audio power amplification system of the embodiment of the present invention；
Fig. 7 is the structural representation of the holographic three-dimensional sound system of another embodiment of the present invention；
Fig. 8 is the structural representation of the broadcast reception demodulating and decoding system of the embodiment of the present invention；
Fig. 9 is the structural representation of the multi-channel sound signal generation system of one embodiment of the invention；
Figure 10 A is the structural representation of the multi-channel sound signal generation system of another embodiment of the present invention；
Figure 10 B is 8 passage of the two-way holographic three-dimensional sound system electromechanics logical relation schematic diagram of the embodiment of the present invention；
Figure 11 is the structural representation of holographic three-dimensional pick up according to embodiments of the present invention；
Figure 12 is another structural representation of holographic three-dimensional pick up according to embodiments of the present invention；
Figure 13 is the preferred structure schematic diagram of holographic three-dimensional pick up according to embodiments of the present invention；
Shown in Figure 14 is another preferred structure schematic diagram of holographic three-dimensional pick up；
Figure 15 is to survey output schematic diagram according to the single channel system of correlation technique；
Figure 16 is holographic three-dimensional pick up actual measurement output schematic diagram according to embodiments of the present invention；
Figure 17 is the acoustically transparent casing appearance schematic diagram of holographic three-dimensional pick up according to embodiments of the present invention；
Figure 18 is the cardinal direction marker schematic diagram of holographic three-dimensional pick up according to embodiments of the present invention；
Figure 19 is the operation principle schematic diagram of the holographic three-dimensional pick up of two-way according to embodiments of the present invention；
Figure 20 is the structural representation of the holographic three-dimensional speaker of the embodiment of the present invention；
Figure 21 is the decomposition and combination structural representation of the holographic three-dimensional speaker of the embodiment of the present invention；
Figure 22 is to survey output imaging schematic diagram according to the single channel system of correlation technique；
Figure 23 is holographic three-dimensional speaker actual measurement output imaging schematic diagram according to embodiments of the present invention；
Figure 24 is the cardinal direction marker schematic diagram of holographic three-dimensional speaker according to embodiments of the present invention；
Figure 25 is the operation principle schematic diagram of the holographic three-dimensional speaker of two-way according to embodiments of the present invention；
Figure 26 is holographic three-dimensional coil-moving speaker first structure schematic diagram according to embodiments of the present invention；
Figure 27 is the second structural representation of holographic three-dimensional coil-moving speaker according to embodiments of the present invention；
Figure 28 is that the holographic three-dimensional speaker of two-way according to embodiments of the present invention builds theater effect schematic diagram；
Figure 29 is cincture movie theatre effect diagram after the holographic three-dimensional speaker of multichannel according to embodiments of the present invention is built；
Figure 30 is that (or playback) structural representation is picked up in the balanced vibration of omnidirectional according to embodiments of the present invention；
Figure 31 is holographic three-dimensional pick up (or player) according to embodiments of the present invention and the first schematic diagram of spherical wave；
Figure 32 is holographic three-dimensional pick up (or player) according to embodiments of the present invention and the second schematic diagram of spherical wave；
Figure 33 is holographic three-dimensional pick up (or player) according to embodiments of the present invention and the 3rd schematic diagram of spherical wave；
Figure 34 A realizes schematic diagram for existing monophonic audio；
Figure 34 B realizes technology schematic diagram for the holographic three-dimensional sound equipment of single channel of the embodiment of the present invention；
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 35 B is the holographic three-dimensional acoustical device structural representation 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 principle schematic of multiple sound resource of the embodiment of the present invention；
Figure 39 A sings effect diagram one loudly for the holographic three-dimensional sound system of the embodiment of the present invention；
Figure 39 B is existing stereo system technology image defects schematic diagram one；
Figure 40 A sings effect diagram two loudly for the breath stereo system of the embodiment of the present invention；
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 accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Ground description, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on this Inventive embodiment, the every other enforcement obtained under the premise of creative work is not made by those of ordinary skill in the art 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 403rd, m passage preamplifier 404, at least one second multi-channel audio power amplification system 405 and an at least multichannel are 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 bar number of voice-frequency cable depends on port number, transmits the acoustical signal of a passage per bar voice-frequency cable.
First multi-channel audio power amplification system 402 is by 408 linkage record storage system 403 of a plurality of voice-frequency cable, audio frequency The bar number of cable 408 depends on port number, transmits the acoustical signal of a passage per bar voice-frequency cable.
The quantity of the first multi-channel audio power amplification system 402 may decide that the port number in 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 the holographic three-dimensional player 406 of 409 multichannel of a plurality of voice-frequency cable, The bar number of cable depends on port number, transmits the acoustical signal of a passage per bar voice-frequency cable.
Second multi-channel audio power amplification system, 405 quantity may decide that the port number in itself, if its port number is m, The quantity of the 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 used for producing the m channel sound signal of telecommunication；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 include multigroup by the first single channel preamplifier and First amplifying circuit 500 of one power amplifier composition, per group 500 receiving channel acoustical signal generation system of the first amplifying circuit The 401 wherein channel sound signals of telecommunication for producing simultaneously are amplified.
System recorder memory 403 connects the first multi-channel audio power amplification system 402, for storing the m channel sound after amplifying The sound signal of telecommunication.When being embodied as, system recorder memory 403 can be hard disk, the memorizer such as flash memory.
404 linkage record storage system 403 of m passage preamplifier, for carrying out the m channel sound signal of telecommunication of reading Amplify again.
As shown in fig. 6, the second multi-channel audio power amplification system 405 connects m passage preamplifier 404, the second multichannel Audio power amplification system 405 includes multigroup the second amplifying circuit 600 being made up of the second preamplifier and the second power amplifier, The wherein channel sound signal of telecommunication after amplifying through m passage preamplifier 405 is received per the second amplifying circuit 600 of group and carry out Amplify.
Second amplifying circuit of each passage connection one of which 600 of the holographic three-dimensional player 406 of multichannel, for basis The m channel sound signal of telecommunication after amplifying again carries out playback.
Holographic three-dimensional 406 quantity of player of multichannel may decide that the port number in itself, if its port number is m, many The quantity of the holographic three-dimensional player 406 of passage is 1, if its port number isThe quantity of the holographic three-dimensional player 406 of multichannel For 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：Broadcast connects Demodulating and decoding system 701 is received, is connected between system recorder memory 403 and m passage preamplifier 404.
In one embodiment, as shown in figure 8, broadcast reception demodulating and decoding system 701 includes：
Encoder 801, for being encoded to the single channel sound signal of telecommunication to the m channel sound signal of telecommunication；
Manipulator 802, connects encoder, for being modulated to the single channel sound signal of telecommunication after coding；
Transmitting station 803, is connected to manipulator, for launching the single channel sound modulation signal after modulation；
Receptor 804, connects transmitting station, receives the single channel sound modulation signal of transmitting station transmitting；
Demodulator 805, connects receptor, for being demodulated to single channel sound modulation signal；
Decoder 806, connects demodulator, for the single channel sound signal of telecommunication after demodulation is 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, wave filter 902, shunt 903 and phase splitter 904.
Two-channel stereo equipment 901 is used for producing two-channel stereo, and two-channel stereo equipment 901 can be any Produce the equipment of two-channel stereo, the such as electronic equipment such as computer, radio, mobile phone, mp3.
Wave filter 902 connects two-channel stereo equipment 901, for being filtered to two-channel stereo.
Shunt 903 be used for filtered two-channel stereo is divided into the m channel sound signal of telecommunication, m can be 4 times Number.
Phase splitter 904 is used for the sound telecommunications of each passage in the m channel sound signal of telecommunication for obtaining shunt Number carry out phase hologram respectively, obtain m passage holographic signal.
Shunt 903 and phase splitter 904 constitute passage expansion equipment, obtain m passage according to two-channel stereo Holographic signal.
In one embodiment, phase splitter 904 can be made up of phase shifter and multichannel output circuit, and it is right that the phase shifter is used for The independent phase shift of each passage, multichannel output circuit is used for exporting m passage holographic signal.
In one embodiment, as shown in Figure 10 A, multi-channel sound signal generation system includes：TwoPassage is holographic three-dimensional 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, Can also be two secondChannel audio power amplification system.In addition, in Figure 10 A, by taking positive tetrahedron as an example, 1003 is four-way sound Frequency cable.Figure 10 B is 8 passage of the two-way holographic three-dimensional sound system electromechanics logical relation schematic diagram of the embodiment of the present invention.
In the embodiment of the present invention, m is 4 integral multiple, and the present invention is only illustrated with m as 8.Figure 11 be according to reality of the present invention The structural representation of the holographic three-dimensional pick up of multichannel of example is applied, as shown in figure 11, the holographic three-dimensional pick up of the multichannel includes： Multiple pick up (can be for example pickup vibrating diaphragms) and supporting construction, the supporting construction be used for supporting multiple pick ups so that many The equivalent operation face of individual pick up is located on one of face of a regular polygon, in each pick up equivalent operation face respectively The center superposition in the corresponding face of the heart.The area equation in the equivalent operation face of multiple pick ups.
Pick up shown in Figure 11 is circular configuration, and in a particular application, the shape of pick up is not limited to that, compares The common pick up for also having equilateral triangle, Figure 12 is that another structure of holographic three-dimensional pick up according to embodiments of the present invention is shown It is intended to, as shown in figure 12, the holographic three-dimensional pick up includes：The pick up of multiple equilateral triangles and supporting construction.
It should be noted that above-mentioned regular polygon is not entity structure, but Virtual space structure, it is intended to which description is many Position relationship between individual pick up.
Present invention design is specific each to impartial balance space structure, to realize the holographic three-dimensional pickup to pick up, shape Become brand-new holographic three-dimensional pickup technology.
The supporting construction of holographic three-dimensional pick up can become arbitrary shape based on Demand Design, and the present invention is not limited to this Fixed, as long as can guarantee that each to equal isoequilibrium.Preferably, regular polygon shape can be designed as, and regular polygon can be positive n Face body, m is the integral multiple of n, and n can be 4,6,8,12,20 etc., for example：Positive tetrahedron shape, regular hexahedron shape, positive octahedral Shape etc..The size of regular polygon supporting construction is generally higher than above-mentioned virtual regular polygon.Preferably, regular polygon is supported Arbitrary surface can be changed in each face of structure, so as to meet different demands.The rigidity of supporting construction is related to pickup effect, Therefore supporting construction can be based on demand and select different materials.
Pick up in the present embodiment can be capacitor-type acoustical pick-up, electromagnetic type pick up, piezo-electric type pick up or stay Polar body type pick up.It is of course also possible to be other kinds of pick up, if can in holographic three-dimensional pick up normal work , the present invention is without limitation.
In order to the structure for ensureing holographic three-dimensional pick up is more firm, adjacent pick up in multiple pick ups can be designed All contact with each other, realize being fastenedly connected, to play a part of mutual support.In Figure 12, due to the restriction of positive tetrahedron structure, appoint All contact with each other between two pick ups of meaning.On the premise of the connection fastening of multiple pick ups, the support of holographic three-dimensional pick up Structure may be designed as the inscribe ball of the surrounded structure of multiple pick ups, as shown in fig. 13 that the preferred knot of holographic three-dimensional pick up Structure schematic diagram, so as to, on the basis of holographic three-dimensional pick up fastening structure is ensured, reduce the chi of holographic three-dimensional pick up Very little, reduction takes up room.
Shown in Figure 14 is another preferred structure schematic diagram of holographic three-dimensional pick up, as shown in figure 14, holographic three-dimensional picks up In sound device, each pick up is equivalently-sized, and the specific size of size can be set according to practical situation, for example, can design chi Very little less pick up, is connected by support between each pick up so that the equivalent operation face of multiple pick ups is located at respectively On one of face of one regular polygon.
It should be noted that the holographic three-dimensional pick up that the present invention is provided be many axles based on virtual regular polygon (i.e. The body center of regular polygon and the star-like axle of the solid that the line of centres in each face is constituted) formed divide equally solid space balance knot Structure.The body center of virtual regular polygon is connected respectively with the center in each face, forms the axle on each face, in the coaxial of each axle A pick up, in the case of with wave length of sound with yardstick, its amplitude-frequency response and own axes and sound wave direction of vibration are installed by place Between the relation of angle theta be approximately out (t)=A (t) cos θ, wherein, above-mentioned axis is dummy line, in order to position relationship, A to be described T () is response of the pick up at θ=0 to sound wave.As long as possessing the pick up of above-mentioned cos θ relation, can make with this The holographic three-dimensional pick up of invention directional characteristic, here of the present invention is not done and is described in detail one by one.
Holographic three-dimensional pick up includes multiple pick ups, and each pick up is provided with positive and negative electrode, each pick up On anelectrode as signal output port, the negative electrode of the plurality of pick up can be total to ground wire.Below with holographic three-dimensional pickup Device is illustrated as a example by including four pick ups.Figure 15 is to survey output schematic diagram according to the single channel system of correlation technique, As shown in figure 15, monophonic system only has a road single track power signal output.Figure 16 is that holography according to embodiments of the present invention is stood Body pick up actual measurement output schematic diagram, as shown in figure 16, holographic three-dimensional pick up has the holographic three-dimensional electric signal output in four roads.Per There are different phase places and amplitude-frequency response in road, and the full integration of the holographic three-dimensional signal of telecommunication in four roads is exactly that the divergence to acoustic wavefield is responded, So as to realize holographic three-dimensional pickup effect.
Holographic three-dimensional pick up can also arrange acoustically transparent shell (being typically made up of), multiple pick ups and support knot wire netting Structure is placed on acoustically transparent enclosure.Open space near field signal to noise ratio height, the sensitivity height of closing space.Figure 17 be according to the present invention The acoustically transparent casing appearance schematic diagram of the holographic three-dimensional pick up of embodiment, as shown in figure 17, multiple pick ups and supporting construction are put Put in acoustically transparent enclosure, and insulate with the outer shell phase of acoustically transparent.Acoustically transparent shell can be made up of wire netting, be provided with letter on acoustically transparent shell Number string holes, the output line of electrode and ground wire pass through the signal string holes, consequently facilitating output line is exported to acoustically transparent shell Outside, effectively transmitted signal.In order to ensure the breathability of holographic three-dimensional pick up, passage can be set on acoustically transparent shell, for example Multiple little passages are uniformly arranged in acoustically transparent case surface.Multiple in order to by the supporting construction of holographic three-dimensional pick up and thereon Pick up is firm to be placed in acoustically transparent shell, can be designed as fitting easily into the shape of acoustically transparent shell by the shape of supporting construction.Logical The preferred implementation is crossed, pick up can be protected, holographic three-dimensional pick up is consolidated, strengthen the sensitive of holographic three-dimensional pick up Degree, to guarantee holographic three-dimensional pickup effect.
In order to ensure holographic three-dimensional pickup effect, supporting construction and acoustically transparent shell typically using the making of anti-resonance material.
In actual mechanical process, as holographic three-dimensional pick up needs to coordinate holographic three-dimensional player to be used together, it is Ensure that the two matches and optimal stereo acoustic effect is reached, the two short one trident directions that grows can be set on acoustically transparent shell and referred to Mark, for indicating the putting position of holographic three-dimensional pick up.So as to ensure the intersection for having the face corresponding to two adjacent pick ups In vertical plane.
Typically, for the holographic three-dimensional pick up for possessing four pick ups (constituting positive tetrahedron structure), can be by positive four One drift angle of face body structure is vertical down, to ensure one of pick up horizontal positioned, the pick up in four pick ups The opposite direction of the angular bisector at an angle on the equilateral triangle face of corresponding positive tetrahedron structure, you can be set to above-mentioned direction The direction of index.It is of course also possible to arrange other directions, the invention is not limited in this regard, as long as holographic three-dimensional pick up with The setting rule of the cardinal direction marker of holographic three-dimensional player is identical.Figure 18 is according to embodiments 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 that the pick up of horizontal positioned is located is provided with a cardinal direction marker, So that holographic three-dimensional pick up is put towards same orientation with holographic three-dimensional player, optimal stereo acoustic effect is realized.
Understand from above description, the present invention constructs the balanced vibration of a three dimensions multiaspect omnidirectional and picks up structure, Realize sound wave full information pickup technology.The holographic three-dimensional pick up of the present invention is a solid according to divergence theorem of Gauss design Space-closed multi-plane structure.As most simple stereoeffect in a balanced way is positive tetrahedron, it is preferable space frame typically with which Frame, physics realization is the easiest.Four faces with positive tetrahedron are the position of reference, respectively placement acoustic-electric conversion vibrating diaphragm device (i.e. pick up).
Figure 19 is the operation principle schematic diagram of the holographic three-dimensional pick up of two-way according to embodiments of the present invention, as Figure 19 institute Show, left holographic three-dimensional pick up and right holographic three-dimensional pick up all can achieve real stereo pickup.Present invention achieves including Ripple direction of vibration, in the Holographic test of interior sound wave field, is that holographic three-dimensional sound technique is laid a good foundation.Holographic three-dimensional sound equipment The single-path architecture of technology just has the response to the sound source of different directions before and after up and down, intensity on each face and phase place All different, playback can continue the true wavefield direction at record scene, with prior art in could form acoustic image in human brain Stereophonic sound system is diverse in principle.It is the local reproduction of live sound field.If holographic three-dimensional sound technique is used Double path system, so that it may realize the horizontal broadening of phonotape and videotape and the positioning of depth further, compared with left-right stereo in traditional plane System, with 3 D stereo acoustics.
To sum up, the holographic three-dimensional pick up of the embodiment of the present invention can realize following technique effect：
1) pneumatic compression working method, acoustoelectric electroacoustic high conversion efficiency；
2) no acoustic short circuit, fidelity height；
3), during device design, acoustic impedance match is realized using closing space elasticity, can further improve efficiency and fidelity；
4) single-path system just has certain three-dimensional stereo effect, also certain far and near height identification；
5) double path system has left and right, far and near, the real tri-dimension sound effective value of height, better than traditional binaural skill Art；
6) each passage can carry out multiple mathematics or electrically add and subtract, and form multiple special sound field stiffening effects.
Figure 20 is the structural representation of the holographic three-dimensional speaker of the embodiment of the present invention, and as shown in figure 20, this is holographic three-dimensional Speaker includes：Multiple speakers and supporting construction, the supporting construction is used for supporting multiple speakers so that multiple speakers Equivalent operation face is located on one of face of a regular polygon respectively, and the center in each speaker equivalent operation face is corresponding Face center superposition.The area equation in the equivalent operation face of multiple speakers.
It should be noted that above-mentioned regular polygon is not entity structure, but Virtual space structure, it is intended to which description is many Position relationship between individual speaker.
The feature that the present invention is propagated with the elastic expandable of air dielectric according to sound wave, with Gauss divergence formula as foundation, if Counted a kind of structure for driving fluid media (medium) vibration with space omnidirectional point direction, the structure be each to impartial balance space structure, The power transmission and two aspects of directivity that fluctuates is improved, to reach the purpose of the reconstruction of hologram of acoustic wavefield.
The supporting construction of holographic three-dimensional speaker can become arbitrary shape based on Demand Design, and the present invention is not limited to this Fixed, as long as can guarantee that each to equal isoequilibrium.Preferably, regular polygon shape can be designed as, for example：Positive tetrahedron shape Shape, regular hexahedron shape, regular octahedron shape etc., Figure 20 carries out schematically illustrate by taking positive tetrahedron shape as an example.Regular polygon is propped up The size of support structure is generally higher than above-mentioned virtual regular polygon.Preferably, each face of regular polygon supporting construction can change It is changed into arbitrary surface, so as to meet different demands.The rigidity of supporting construction is related to playback effect, and therefore supporting construction can be based on Demand selects different materials.
Speaker in the present embodiment can be capacitor type speaker, electromagnetic type speaker, piezoelectric loudspeaker or quiet Electric type speaker.It is of course also possible to be other kinds of speaker, as long as can in holographic three-dimensional speaker normal work be Can, the present invention is without limitation.It is electromagnetic type speaker shown in Figure 20 in the present embodiment.
In order to the structure for ensureing holographic three-dimensional speaker is more firm, adjacent speaker in multiple speakers can be designed All contact with each other, realize being fastenedly connected to play a part of mutual support.In Figure 20, due to the restriction of positive tetrahedron structure, appoint All contact with each other between two speakers of meaning.Preferably, the empty portions of multiple speakers can be closed, to improve holography The sensitivity of Stereoloudspeaker.On the premise of the connection fastening of multiple speakers, the supporting construction of holographic three-dimensional speaker can set The inscribe ball of the surrounded structure of multiple speakers is calculated as, the preferred structure of holographic three-dimensional speaker as shown in figure 21 is illustrated Figure, so as to, on the basis of holographic three-dimensional loadspeaker structure fastening is ensured, reduce the size of holographic three-dimensional speaker, reduction is accounted for Use space.In addition, the supporting construction in the present embodiment can be formed by the autologous framework composition of single speaker, its material is general Made using anti-resonance material, so as to the fastening structure of the holographic three-dimensional speaker of effective guarantee.
It should be noted that the holographic three-dimensional speaker that the present invention is provided be many axles based on virtual regular polygon (i.e. The body center of regular polygon and the star-like axle of the solid that the line of centres in each face is constituted) formed divide equally solid space balance knot Structure.The body center of virtual regular polygon is connected respectively with the center in each face, forms the axle on each face, in the coaxial of each axle A speaker is installed at place, and between its amplitude-frequency response and own axes and sound wave direction of vibration, the relation of angle theta is out (t)=A T () cos θ, wherein, above-mentioned axis is dummy line, in order to position relationship to be described.A (t) is sound of the speaker at θ=0 to sound wave Should.As long as possessing the speaker of approximately above-mentioned cos θ relation, can make and raising with the holographic three-dimensional of directional characteristic of the present invention Sound device, here of the present invention is not done and is described in detail one by one.
Holographic three-dimensional speaker includes multiple speakers, and each speaker is provided with electrode, on each speaker Electrode is used as signal input port.Signal string holes is provided with supporting construction, and the signal input line of electrode passes through the signal string holes, Consequently facilitating effectively transmitted signal.Illustrate so that holographic three-dimensional speaker includes four speakers as an example below.Figure 22 is Output schematic diagram is surveyed according to the single channel system of correlation technique, as shown in figure 22, monophonic system only has a road single track power Signal output.Figure 23 is holographic three-dimensional speaker actual measurement output schematic diagram according to embodiments of the present invention, as shown in figure 23, holographic Stereoloudspeaker has the different holographic three-dimensional power signal output of four road phase amplitudes, with direction in space characteristic.Four roads are complete The full integration of breath stereo power signal is exactly that the divergence to acoustic wavefield drives, so as to realize holographic three-dimensional playback effect, due to Its mechanical characteristics is identical with sound wave, and without sound short circuit problem, the system for easily making more high tone quality.
In actual mechanical process, as holographic three-dimensional speaker needs to coordinate holographic three-dimensional pick up to be used together, it is Ensure that the two matches and optimal stereo acoustic effect is reached, the trident directions that can arrange two short length on the support structure refer to Mark, for indicating the putting position of holographic three-dimensional speaker.
Typically, for the holographic three-dimensional speaker for possessing four speakers (constituting positive tetrahedron structure), can be by positive four One drift angle of face body structure is vertical down, to ensure one of speaker horizontal positioned, the speaker in four speakers The opposite direction of the angular bisector at an angle on the equilateral triangle face of corresponding positive tetrahedron structure, you can be set to above-mentioned direction The direction of index.It is of course also possible to arrange other directions, the invention is not limited in this regard, as long as holographic three-dimensional speaker with The setting rule of the cardinal direction marker of holographic three-dimensional player is identical.Figure 24 is according to embodiments of the present invention holographic three-dimensional raises The cardinal direction marker schematic diagram of sound device, as shown in figure 24, the plane that the speaker of horizontal positioned is located is provided with two short length Trident cardinal direction marker so that holographic three-dimensional speaker is put towards same orientation with holographic three-dimensional player, is realized optimal Stereo acoustic effect.
Understand from above description, the present invention constructs the balanced vibration playback structure of a three dimensions multiaspect omnidirectional, Realize sound wave full information playback technology.The holographic three-dimensional speaker of the present invention is a solid according to divergence theorem of Gauss design Space-closed multi-plane structure.As most simple stereoeffect in a balanced way is positive tetrahedron, it is preferable space frame typically with which Frame, physics realization is the easiest.Four faces with positive tetrahedron are the position of reference, and placement electro-acoustic transducing device (is raised respectively Sound device).
Figure 25 is the operation principle schematic diagram of the holographic three-dimensional speaker of two-way according to embodiments of the present invention, as Figure 25 institute Show, left holographic three-dimensional speaker and right holographic three-dimensional speaker all can achieve real three-dimensional playback in zonule, and left and right road exists The effect of cooperating in space, so that it may which the physics wave field for realizing greater room reproduces.Present invention achieves including ripple direction of vibration In the Holographic test of interior sound wave field, it is that holographic three-dimensional sound technique is laid a good foundation.The single channel of holographic three-dimensional sound technique Structure just has the response to the sound source of different directions before and after up and down, and intensity on each face and phase place are all different, return Put the true wavefield direction that can continue record scene, with prior art in could form the stereophonic sound system of acoustic image in human brain It is diverse in principle.It is the local reproduction of live sound field.If holographic three-dimensional sound technique is using more than two-way being System, so that it may realize the horizontal broadening of phonotape and videotape and the positioning of depth further, compared with left-right stereo system in traditional plane, has There is more real 3 D stereo acoustics.
The present invention by multigroup loudspeaker of more than two sets with directional characteristic, with the spy of approaching simulation scene wavefront surface Levying and spatial organization is done for principle, carry out physics sound field playback, will obtain the physics source of sound imaging more three-dimensional than prior art, so as to Form brand-new holographic wave field and reproduce sound technique.For the multiple speakers in holographic three-dimensional speaker, 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, by a hollow ball for making of audio amplifier material Casing, opens circular hole on compartment equalization four-vector position, high for four traditional Whole frequency bands pliable speaker is installed on circular hole, shape Become closing space.Directivity definition is same with upper example.The present embodiment can be realized with the assembling of existing finished speaker, easily made.By There is stronger elasticity " damping " (being exactly the conversion of acoustical power in fact) in interior space-closed to vibration, during making, will consider that casing holds Product and the relation of frequency, larger volume has relatively low resonant frequency, if reduce former speaker voice coil suspension (bullet ripple) and The damping (namely increase pliable) of cone side structure, can improvement effect further.
Figure 26 is holographic three-dimensional coil-moving speaker first structure schematic diagram according to embodiments of the present invention, and Figure 27 is root According to second structural representation of holographic three-dimensional coil-moving speaker of the embodiment of the present invention, as shown in figures 26 and 27, tradition is raised one's voice Device frame is changed to shallow basin equilateral triangle by cone, and four speaker frame assemblings can obtain positive tetrahedron structure.Frame junction Ventilative gap is not stayed.Magnetic structure can built-in also can exterior.The design of sound basin is also changed into the shallow cone of Rhizoma Sparganii equilateral triangle from circular cone.Voice coil loudspeaker voice coil Support and sound basin side adopt high pliable structure.On holographic three-dimensional coil-moving speaker reserve suitable down-lead bracket, after assembling One jiao of placement stable fixed support vertical with the positive triangular facet for facing (is shown with the straight line between four speakers in Figure 26 Meaning explanation), the external wire netting ball protection of holographic three-dimensional coil-moving speaker, you can make a holographic three-dimensional moving-coil type and raise Sound device.It is the external structure of four speaker heads shown in Figure 26, is the built-in structure of four speaker heads shown in Figure 27, by Then the built-in setting of sound head, is therefore not drawn into a speaker at top in Figure 27, only illustrate other three speakers.
The present invention designs specific space multiaspect omnidirectional vibrational structure according to the divergence formula of elastic wave prorogation theory and field theory Speaker, with realize to the frequency of acoustic wavefield, amplitude, phase place, the field of force of especially fluctuating direction of vibration, and wave field sky Between distribution characteristicss playback.The directional information of sound wave is not only increased, can also obtain the income of certain efficiency and fidelity.
The air dielectric sound field information for including direction of vibration attribute is changed into the holographic signal of telecommunication by the present invention, and amplification The holographic signal of telecommunication, drives air dielectric in the way of breathing, just there is no sound short circuit problem, reduces influence factor, tonequality Corresponding alleviation is just had with the contradiction of efficiency；With the playback system of simulated field ripple direction of vibration, the side of physics wave field is reproduced Formula realizes the construction of stereophonic field.Therefore, each attribute that the efficiency of holographic three-dimensional speaker, Frequency Response, wave field reproduce, all Raising or the extension of respective degrees will be had.
Multigroup holographic three-dimensional speaker can be pressed by the holographic three-dimensional speaker of the present invention according to different audition demands Acoustic propagation rule can obtain the sound field playback effect truer, more stable, deep than conventional art, referred to as entirely in space arrangement The three-dimensional playback technology of breath, for example, can realize being similar to the two-way arenas basic model of conventional stereo sound, front multichannel music hall type, front many The three-dimensional playback effect of the various ways such as movie theatre circulating types many afterwards.
Figure 28 is the theater effect schematic diagram of the holographic three-dimensional speaker of two-way according to embodiments of the present invention, as Figure 28 institute Show, the figure of in figure bird shape represents theater audiences, left holographic three-dimensional speaker and right holographic three-dimensional speaker coordinate composition Arenas stereoeffect.
Figure 29 is the rear around movie theatre effect diagram of the holographic three-dimensional speaker of multichannel according to embodiments of the present invention, such as schemes Shown in 29, the figure of in figure bird shape represents theater viewers, left front after holographic three-dimensional raise before and after holographic three-dimensional speaker and the right side Sound device coordinates composition movie theatre stereo-circulation effect.
Holographic three-dimensional playback technology is a kind of with three dimensions multiaspect omnidirectional vibrational structure, imitates the mechanics mould of air vibration Formula, realizes carrying out the technology of sound wave full information playback in aeroelastic dielectric breathing mode.The full information of sound wave, or claim sound wave Holographic three-dimensional signal, including：Amplitude, frequency, phase place, divergence, ripple direction of vibration.Divergence therein, that is, the breathing of air. In mathematics, breathing is called divergence, that is to say the drive mechanism of compressional wave, can be given by divergence Gauss theorem.Breathing is space each side Closing integrating effect to motion.Driven with closing space omnidirectional or detect, it is possible to realize divergence operation.Here it is holographic The theoretical foundation of stereo system technological invention.
The present invention has following two major features in structure：1st, space-closed drives；2nd, space omnidirectional drives.Therefore, imitate Just there are on fruit following two major features：1st, the efficiency of energy conversion and transmission can be improved；2nd, the directivity information of wave field can be played back.
To sum up, the present invention realizes following technique effect：
1) the pneumatic contact of omnidirectional, can reduce damping loss, and the playback efficiency of sound increases；
2) need not close or hemi-closure space reflex cabinet technology is improving efficiency, influence factor tails off, Frequency Response With regard to relatively flat；
3) design structure has taken into account the directivity of wave field three-dimensional space before and after up and down, can build more broad Deep stereophonic field；
4) physics sound field three-dimensional imaging, substantially unrelated with the position of auditor and attitude, not by position and the appearance of auditor State is affected.
Figure 30 is that structural representation is picked up in the balanced vibration of omnidirectional according to embodiments of the present invention, as shown in figure 30, by positive four Body wherein one side level in face is that the first face 1, remaining several equilateral triangle face are respectively set to the second face 2, the 3rd face 3 and the upward On four sides 4.The normal in this four faces, just constitutes vector and direction vector that three dimensions are divided equally.Knot is picked up in the balanced vibration of omnidirectional Structure is picked up at least three vectors, it is possible to determine unique vector, as long as each component etc. is than playback, vibration vector is closed naturally Become, which achieves directivity.Plus another vector, directivity not only being strengthened, moreover it is possible to embodies the breathing scalar of sound wave, Obtain more completely wave field information.The full integration of each vector, is a scalar, negative equivalent to directly being done using the breathing elasticity of air Carry, efficiency can be improved with fidelity；Each to vector and vector, with wave field directional characteristic, with wave field physics imaging function. Than conventional art, the present invention has more completely more rich information of acoustic wave, be a kind of by the three-dimensional point thinking development be The sound technique of thinking.
Figure 31 is holographic three-dimensional pick up (or player) according to embodiments of the present invention and the first schematic diagram of spherical wave, schemes 32 is holographic three-dimensional pick up (or player) according to embodiments of the present invention and the second schematic diagram of ellipsoid ripple, and Figure 33 is basis The holographic three-dimensional pick up (or player) of the embodiment of the present invention and the 3rd schematic diagram of ellipsoid ripple, as shown in figure 31, if entirely Each vector magnitude of breath stereo pickup device (or player) is identical, then spherical wave is circular spherical wave；As shown in figure 32, such as Really each vector magnitude holographic three-dimensional pick up (or player) difference, has the metamorphosis of wavefront surface, namely possesses three Dimension space directivity, then spherical wave is similar ellipse spherical wave；As shown in figure 33, be collection in worksite wave field produce sphere Ripple, it then follows the equilibrium relation of medium internal force, is similar to expand sphere and elapse the centre of sphere to the direction that fluctuation is transmitted.
The embodiment of the present invention is with Gauss theorem as theoretical basiss, and the holographic physical for constructing acoustic wavefield reproduces.The present invention The full information of the sound wave of embodiment, or claim acoustic holographic three-dimensional signal, including：Amplitude, frequency, phase place, divergence, ripple vibration side To.Divergence therein, refers to the breathing of air, that is to say the drive mechanism of compressional wave.Can be given 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 motion.Complete with closing space To driving or detection, it is possible to realize divergence operation.
The embodiment of the present invention is a kind of with three dimensions multiaspect omnidirectional vibrational structure, imitates the mechanics mould of air vibration Formula is realized carrying out the technology of pickup, recording, transmission and the playback of sound wave full information in aeroelastic dielectric breathing mode.
Understood based on above-mentioned analysis, the holographic three-dimensional sound system of the embodiment of the present invention has following features in structure：
1st, the little space-closed of local or semiclosed driving；
2nd, 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 has the advantage that：
1st, using driving with sound wave mechanism of production identical aeroelastic, the effect of energy conversion and transmission can not only be improved Rate, sound performance is also more natural.
2nd, can detect and play back the directivity information of wave field.
As most simple stereoeffect in a balanced way is positive tetrahedron, it is preferable space framework with which, physics realization is most For easy.The comprehensive effect of all directions has Gauss theorem characteristic, can improve efficiency with fidelity；Separation is each to just there is wave field Directional characteristic, with wave field physics imaging function.
Than prior art, the holographic three-dimensional sound system of the embodiment of the present invention has more completely more rich sound wave to be believed Breath, be a kind of by the three-dimensional point thinking development for said three-dimensional body thinking sound technique.
The holographic three-dimensional sound system of the embodiment of the present invention make use of directivity, need the directivity to space vector in addition Definition：
Structure based on the regular polygon that can meet divergence theorem of Gauss.By taking positive tetrahedron as an example：By its one side level It is the first face upward, with the line at the geometric center in the face and one of angle as device direction, prolongs from the angle towards this angle Stretch observation, the face that the equilateral triangle of the positive tetrahedron on the angle left side is located is the second face, the face that the equilateral triangle on the right side is located is the Three faces, the face that the equilateral triangle at the back side is located is fourth face.The normal in this four faces, just constitutes the vector that three dimensions are divided equally And direction vector.
The present invention is series technique, consists of the following components：
1st, holographic three-dimensional pickup system (holographic three-dimensional pick up)
According to the solid space multi-plane structure of divergence Gauss theorem design, it is to pick up device position small size sky The acoustical-electrical transducer part of interior acoustic wavefield full information.
2nd, supporting series electronic equipment is (as the first multi-channel audio power amplification system 402, system recorder memory 403, m passage Preamplifier 404 and the second multi-channel audio power amplification system 405 etc.).
In order to record, transmit, preserve, adjust, the holographic three-dimensional acoustical signal of power amplification, to ensure holographic three-dimensional speaker System can realize the series electronic equipment of live sound wave field reproduction.Because the vector property of holographic three-dimensional technology is mainly in pickup Realize with the playback stage, single pass electronic circuit function is similar with conventional art, is not adopting coding and decoding technology Under the conditions of, with the combination of a few set traditional circuits, you can realize required function.
3rd, holographic three-dimensional speaker
According to the space structure of the solid space multiaspect 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.
4th, holographic three-dimensional sound system
Holographic three-dimensional microphone, the supporting series holographic electrical power signal that generated of electronic equipment is input into, is raised with holographic three-dimensional Part based on sound device, the two-way for being combined according to wave field characteristics design or the cincture of four tunnels and above holographic three-dimensional sound equipment system System, in order to realize building the purpose of more broad deep stereophonic field.
5th, holographic three-dimensional coding/decoding system
As single holography acoustic-electric, electro-acoustic element have multiaspect signaling, traditional single channel single track transmission cannot meet will Ask, need multiple tracks realize single channel.Data volume and equipment needed thereby will be at double increase.In large-scale application, and broadcast is carried During ripple modulation, some inconvenience are understood.In order to solve this problem, can be using the method for timesharing coding and decoding.
The embodiment of the present invention so-called " omnidirectional ", refers to that the signal on a position must have the direction more than more than three. The present invention defines dividing into " passage " for different directions signal, and on a position, the collection of all direction signals is combined into one " road " i.e., Several is combined as a road.
When the embodiment of the present invention is embodied as：
1st, (depending on sound equipment works demand, such as four tunnel cinctures) the holographic three-dimensional pickup system with two sets or more, collection is existing The multichannel Holographic fluctuation signal of field.
2nd, Holographic fluctuation signal is done simple in-situ processing：Dub, amplify, recording (digital simulation all can) to obtain transmitting The Holographic fluctuation data being stored on medium.
3rd, amplified with multichannel multi-channel electronic system, adjustment (denoising, frequency modification and phasing etc.), power amplification, The audio power signal of holographic three-dimensional playback system must be can be used for.
4th, holographic three-dimensional audio power signal is put on holographic three-dimensional playback system, obtains the holographic sound waves field of reproduction.
The holographic three-dimensional sound system for the embodiment of the present invention being described with reference to Figure 34 to Figure 41 has compared with prior art Standby advantage.Figure 34 A realizes schematic diagram for existing monophonic audio；Figure 34 B is the holographic three-dimensional sound of single channel of the embodiment of the present invention Sound realizes 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 representation 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, each vibrating diaphragm homophase sounding shape Spherical wave is become to there is no sound short circuit problem；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 The wavefront surface difference for being generated；Figure 38 is the holographic three-dimensional pickup principle schematic of multiple sound resource of the embodiment of the present invention, due to respectively shaking Film vibration vector is that space omnidirectional divides equally, with the function of picking up wavefront surface normal tangent plane；Figure 39 A is the embodiment of the present invention Holographic three-dimensional sound system sings effect diagram one loudly, diverse location, and audio-video position is substantially motionless；Figure 39 B is existing solid sound Sound technology image defects schematic diagram one, diverse location, audio-video position difference, as moving 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 third dimension, while also having altitude location Function；Figure 40 B is existing stereo system technology image defects schematic diagram two, turns round 90 degree, and third dimension will disappear.Figure 41 is vertical The holographic three-dimensional combined acoustics in two groups of left and right to combination.The advantage of this combination is that the height positioning of phonotape and videotape is more accurate.
In sum, the holographic three-dimensional sound system of the embodiment of the present invention has following advantage：
1st, efficiency is higher
Using with air vibration identical mechanical structure, efficiency will be improved naturally.Without sound short circuit problem, enter one again Step improves efficiency.
2nd, fidelity is good
Without sound short circuit, it is not necessary to which rear enclosed or paraphase technology are improving efficiency.Length problem without paraphase path, Just there is no the deterioration problem of frequency characteristic yet.As long as frequency characteristic of the channel frequency characteristic with acoustic device oscillating component is joined Put down and carry out.
3rd, 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 different directions before and after up and down, at each Intensity and phase place on face is all different, and playback can continue the true wavefield direction at record scene.Could shape in human brain with present Become the stereophonic sound system of acoustic image entirely different in principle, be that the local of live sound field reproduces.
The present invention reuses double path system, so that it may realize the horizontal broadening of phonotape and videotape and the positioning of depth further, compared with existing Left-right stereo system in some planes, many of solid, is really provided with the meaning of 3 D stereo, and this is also that sound field reproduction is The no difference for real physics realization.Before and after the present invention, (two-way is holographic three-dimensional preposition and two-way is holographic three-dimensional for four tunnel systems Rearmounted), so that it may realize around the total space, namely：Have around, far and near, height, approach the sound of complete real space sense Acoustic system.
4th, the combination of efficiency and fidelity
In conventional art, in order to improve efficiency, often frequency of loss characteristic namely fidelity, such as fully sheathed case and swing to skill Art；In order to fidelity is improved, efficiency, such as damping of suspension such as vibrating diaphragm side, voice coil loudspeaker voice coil bullet ripple etc. can be lost again.
In the embodiment of the present invention, as the air dielectric that closes is both power receptor in itself, it is acoustic resistance antibody again, is receiving Also be formed damping while power, and the closing in this space, inside and outside medium is communicated by vibrating diaphragm, elastomer communicate and Closed voice box is different, energy loss very little.The damping of the suspension such as vibrating diaphragm side, voice coil loudspeaker voice coil bullet ripple appropriate can reduce, So as to sensitivity or efficiency are merged to a certain extent with fidelity.
Understand, the present invention is worked in the way of directly driving gaseous medium dilational vibration based on above-mentioned analysis, electroacoustic is changed Efficiency high；The noiseless short circuit problem of the present invention, can effectively solving efficiency, the contradiction between frequency characteristic and fidelity；Electro-acoustic element During design, the present invention can consider the difference of the factors such as Q-value, resonant frequency, compliance and conventional art, to vibrational system and The characteristic of support structure is adjusted accordingly, and can further improve efficiency and fidelity；The single-path system of the present invention has certain three-dimensional Stereophonic effect, also certain far and near height identification；The two-way omnidirectional system of the present invention has left and right, far and near, height Real tri-dimension sound effective value, better than traditional two-way sterophonic technique；The each passage of the present invention can also carry out multiple mathematics or electric Plus-minus, to form multiple special sound field stiffening 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 the spy for describing with reference to the embodiment or example Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example are necessarily referred to.And, the specific features of description, structure, material or feature can be any One or more embodiments or example in combine in an appropriate manner.
Particular embodiments described above, has been carried out to the purpose of the present invention, technical scheme and beneficial effect further in detail Describe in detail bright, the specific embodiment that the foregoing is only the present invention is should be understood that, the guarantor being not intended to limit the present invention Shield scope, all any modification, equivalent substitution and improvement that within the spirit and principles in the present invention, is done etc., should be included in this Within the protection domain of invention.

Claims (10)

1. a kind of holographic three-dimensional sound system, it is characterised in that include：Multi-channel sound signal generation system, at least one first Multi-channel audio power amplification system, system recorder memory, at least m passage preamplifier, 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 used for producing the m channel sound signal of telecommunication；Wherein, m >=4, and m is 4 or 6 integers Times；
The first multi-channel audio power amplification system includes multigroup by the first single channel preamplifier and the first power amplifier First amplifying circuit of composition, receive the channel sound signal generation system generation per the first amplifying circuit of group wherein one is led to The road sound signal of telecommunication is simultaneously amplified；
The system recorder memory connects the first multi-channel audio power amplification system, for storing the m passage after amplifying The sound signal of telecommunication；
The m passage preamplifier connects the system recorder memory, for by the m channel sound signal of telecommunication after amplification Amplified again；
The second multi-channel audio power amplification system connects the m passage preamplifier, the second multi-channel audio power amplifier System includes multigroup the second amplifying circuit being made up of the second preamplifier and the second power amplifier, amplifies electricity per group second Road receives the wherein channel sound signal of telecommunication after amplifying through the m passage preamplifier and is amplified；
Each passage connection second amplifying circuit of one of which of the holographic three-dimensional player of the multichannel, for according to putting again The m channel sound signal of telecommunication after big carries out playback.
2. holographic three-dimensional sound system according to claim 1, it is characterised in that the multi-channel sound signal produces system System includes：The holographic three-dimensional pick up of an at least multichannel, including：Multiple pick ups and supporting construction, the supporting construction is used for Support the plurality of pick up so that the equivalent operation face of the plurality of pick up is located at one of them of a regular polygon respectively On face, the center superposition in the corresponding face in the center in each pick up equivalent operation face.
3. holographic three-dimensional sound system according to claim 1, it is characterised in that the holographic three-dimensional player of the multichannel Including：Multiple speakers and supporting construction, the supporting construction is used for supporting the plurality of speaker so that the plurality of raise one's voice The equivalent operation face of device respectively be located at a regular polygon one of face on, the center in each speaker equivalent operation face and its The center superposition in corresponding face.
4. the holographic three-dimensional sound system according to any one of claim 1-3, it is characterised in that also include：Broadcast connects Demodulating and decoding system is received, is connected between the system recorder memory and m passage preamplifier, the broadcast reception solution is reconciled Code system includes：
Encoder, for being encoded to the single channel sound signal of telecommunication to the m channel sound signal of telecommunication；
Manipulator, connects the encoder, for being modulated to the single channel sound signal of telecommunication after coding；
Transmitting station, is connected to the manipulator, for launching the single channel sound modulation signal after modulation；
Receptor, connects the transmitting station, receives the single channel sound modulation signal of the transmitting station transmitting；
Demodulator, connects the receptor, for being demodulated to the single channel sound modulation signal；
Decoder, connects the demodulator, for the single channel sound signal of telecommunication after demodulation is decoded as m channel sound electricity Signal.
5. holographic three-dimensional sound system according to claim 1, it is characterised in that the multi-channel sound signal produces system System includes：
Two-channel stereo equipment, for producing two-channel stereo；
Wave filter, connects the two-channel stereo equipment, the two-channel stereo is filtered；
Shunt, for being divided into the m channel sound signal of telecommunication by the filtered two-channel stereo；
Phase splitter, for the sound electricity of each passage in the m channel sound signal of telecommunication that obtains the shunt Signal carries out phase hologram respectively, obtains m passage holographic signal.
6. the holographic three-dimensional sound system according to Claims 2 or 3, it is characterised in that the regular polygon be Body, and m is the integral multiple of n.
7. the holographic three-dimensional sound system according to Claims 2 or 3, it is characterised in that the supporting construction be Support structure, each face of the regular polygon supporting construction is arbitrary surface or plane.
8. holographic three-dimensional sound system according to claim 2, it is characterised in that each pick up is provided with positive negative electricity Pole, the anelectrode on each pick up is total to ground wire as signal output port, the negative electrode of the plurality of pick up.
9. holographic three-dimensional sound system according to claim 8, it is characterised in that the holographic three-dimensional pick up is also wrapped Include：Acoustically transparent shell, is provided with the trident cardinal direction markers of two short length, for indicating described holographic three-dimensional pick up on the acoustically transparent shell The putting position of sound device.
10. holographic three-dimensional sound system according to claim 3, it is characterised in that be provided with two in the supporting construction The trident cardinal direction marker of a short length, for indicating the putting position of the holographic three-dimensional speaker.
CN201610751418.5A 2016-08-29 2016-08-29 Holographic three-dimensional sound system Expired - Fee Related CN106454616B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610751418.5A CN106454616B (en) 2016-08-29 2016-08-29 Holographic three-dimensional sound system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610751418.5A CN106454616B (en) 2016-08-29 2016-08-29 Holographic three-dimensional sound system

Publications (2)

Publication Number Publication Date
CN106454616A true CN106454616A (en) 2017-02-22
CN106454616B CN106454616B (en) 2019-10-08

Family

ID=58182830

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610751418.5A Expired - Fee Related CN106454616B (en) 2016-08-29 2016-08-29 Holographic three-dimensional sound system

Country Status (1)

Country Link
CN (1) CN106454616B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111343556A (en) * 2020-03-11 2020-06-26 费迪曼逊多媒体科技（上海）有限公司 Sound system combining traditional sound reinforcement, holographic sound reinforcement and electronic sound cover and using method thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070009116A1 (en) * 2005-06-23 2007-01-11 Friedrich Reining Sound field microphone
CN101548554A (en) * 2006-10-06 2009-09-30 彼得·G·克拉文 Microphone array
CN102711010A (en) * 2012-05-29 2012-10-03 苏州上声电子有限公司 Method and device for controlling broadband sound field of loudspeaker array by utilizing secondary residual sequence
CN103220597A (en) * 2013-03-29 2013-07-24 苏州上声电子有限公司 Balancing device for sound field in vehicle
CN103338416A (en) * 2013-05-28 2013-10-02 泰凌微电子（上海）有限公司 Music sharing system and method of wireless card earphone
CN104378728A (en) * 2014-10-27 2015-02-25 常州听觉工坊智能科技有限公司 Stereophonic audio processing method and device
CN204616094U (en) * 2015-05-25 2015-09-02 武汉理工大学 Indoor stealthy remote pickup public address system
CN204616089U (en) * 2015-05-27 2015-09-02 北京联合大学 The full directional loudspeaker case of regular dodecahedron
CN205265912U (en) * 2015-06-26 2016-05-25 意法半导体股份有限公司 Multimembrane microphone, audio frequency treatment circuit and system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070009116A1 (en) * 2005-06-23 2007-01-11 Friedrich Reining Sound field microphone
CN101548554A (en) * 2006-10-06 2009-09-30 彼得·G·克拉文 Microphone array
CN102711010A (en) * 2012-05-29 2012-10-03 苏州上声电子有限公司 Method and device for controlling broadband sound field of loudspeaker array by utilizing secondary residual sequence
CN103220597A (en) * 2013-03-29 2013-07-24 苏州上声电子有限公司 Balancing device for sound field in vehicle
CN103338416A (en) * 2013-05-28 2013-10-02 泰凌微电子（上海）有限公司 Music sharing system and method of wireless card earphone
CN104378728A (en) * 2014-10-27 2015-02-25 常州听觉工坊智能科技有限公司 Stereophonic audio processing method and device
CN204616094U (en) * 2015-05-25 2015-09-02 武汉理工大学 Indoor stealthy remote pickup public address system
CN204616089U (en) * 2015-05-27 2015-09-02 北京联合大学 The full directional loudspeaker case of regular dodecahedron
CN205265912U (en) * 2015-06-26 2016-05-25 意法半导体股份有限公司 Multimembrane microphone, audio frequency treatment circuit and system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111343556A (en) * 2020-03-11 2020-06-26 费迪曼逊多媒体科技（上海）有限公司 Sound system combining traditional sound reinforcement, holographic sound reinforcement and electronic sound cover and using method thereof

Also Published As

Publication number Publication date
CN106454616B (en) 2019-10-08

Similar Documents

Publication Publication Date Title
CN103181192B (en) Three dimensional sound capture and reproduction using multi-microphone
CN104321812B (en) Three dimensional sound compression during calling and air-launched
US7489788B2 (en) Recording a three dimensional auditory scene and reproducing it for the individual listener
CN108702566A (en) Cylindrical microphone array for effectively recording 3D sound fields
US8442244B1 (en) Surround sound system
CN105101027A (en) Real-time Control Of An Acoustic Environment
JPH06101875B2 (en) Acoustic space reproducing method, acoustic recording device, and acoustic recording body
JP2002505818A (en) System for generating artificial acoustic environment
JP2008543144A (en) Acoustic signal apparatus, system, and method
JP2016527799A (en) Acoustic signal processing method
CN106358129B (en) A kind of holographic three-dimensional loudspeaker
CA1060350A (en) Omniphonic microphone and loudspeaker system
CN108377447A (en) A kind of portable wearable surround sound equipment
WO2018039844A1 (en) Holographic stereo sound system
CN106454616B (en) Holographic three-dimensional sound system
JP2008118559A (en) Three-dimensional sound field reproducing apparatus
JP5867799B2 (en) Sound collecting / reproducing apparatus, program, and sound collecting / reproducing method
CN106211004B (en) A kind of holographic three-dimensional electrostatic loudspeaker
CN111954146B (en) Virtual sound environment synthesizing device
Fukumori et al. Digital archive for Japanese intangible cultural heritage based on reproduction of high-fidelity sound field in Yamahoko Parade of Gion Festival
CN106210968B (en) A kind of holographic three-dimensional sound pick-up
CN206323540U (en) A kind of many palace array speakers
Enomoto et al. 3-D sound reproduction system for immersive environments based on the boundary surface control principle
JPH01272299A (en) Small sound image composite speaker system
CN213186472U (en) Stereo earphone

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191008