CN106210968A - A kind of holographic three-dimensional pick up - Google Patents
A kind of holographic three-dimensional pick up Download PDFInfo
- Publication number
- CN106210968A CN106210968A CN201610750749.7A CN201610750749A CN106210968A CN 106210968 A CN106210968 A CN 106210968A CN 201610750749 A CN201610750749 A CN 201610750749A CN 106210968 A CN106210968 A CN 106210968A
- Authority
- CN
- China
- Prior art keywords
- pick
- holographic
- dimensional
- supporting construction
- face
- 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
Links
- 238000010276 construction Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 6
- 210000004556 brain Anatomy 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 30
- 238000000034 method Methods 0.000 description 26
- 230000000694 effects Effects 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 8
- 239000013598 vector Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 238000001093 holography Methods 0.000 description 5
- 239000003550 marker Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 210000004508 polar body Anatomy 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000010415 tropism Effects 0.000 description 1
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 kind of holographic three-dimensional pick up.Wherein, including: multiple pick ups and supporting construction, described supporting construction is used for supporting the plurality of pick up so that the equivalent operation face of the plurality of pick up lays respectively on one of them face of a regular polygon, the center superposition in the face that the center in each pick up equivalent operation face is corresponding.The holographic three-dimensional pick up of the present invention, have the response of the sound source of different directions before and after up and down, intensity and phase place in each direction are the most different, playback can continue the true wavefield direction that record is on-the-spot, with in prior art compared with could forming the stereophonic sound system of acoustic image in human brain, principle is diverse.Holographic three-dimensional pick up can pick up the direction in space phase property of on-the-spot sound field, gathers signal for holographic playback, such that it is able to the mode that physics wave field local reproduces, it is achieved holographic three-dimensional acoustics.
Description
Technical field
The present invention relates to sound technique field, particularly relate to a kind of holographic three-dimensional pick up.
Background technology
Sound equipment is realizing the three-dimensional imaging of sound, has simulation biology to be perceived by picture and physics wave field is rendered as two kinds of think ofs
Road.
Biological sensation formation method is in the difference of human body two ear position simulation wave field, makes brain draw the sense of sound source position
Feel.Technology is mainly realized by left and right sound volume difference at present, the most really realizes the reproduction of wave field.Now with one
Wear-type holography sound technique, around phantom bead in the way of sound field, it is achieved pickup and playback all around, but auditor must
This earphone must be worn and just have holographic sound equipment (entirely around sound technique) effect, easily affect presence and the comfort of auditor.
Physics wave field reproducting method is reproduction acoustic wavefield in large range of space-time, and auditor is in this four-dimension
In space, regardless of attitude, the most just there is the sensation of solid.
The notable difference of above two method mainly has a following three points:
Can 1, the enforcement difficulty of physics wave field reproducting method be relatively big, it is critical only that and keep wavefield directivity；
2, position and the limitation of attitude, i.e. phonotape and videotape of auditor are showy the most indefinite along with walking about of auditor；
3, in whether the degree of depth and the limitation of range, i.e. phonotape and videotape can only appear on a foil-like areas.
Existing sound equipment only possesses picking up and playback function of the information such as the frequency to acoustical vibration, amplitude, phase place, does not possesses
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 of direction characteristic, in that directly detect and drive the working method of air dielectric with vibrating diaphragm.This working method is lost
Losing spatial directivity, stereoscopic localized is shallow floating, inaccurate untrue.
Vibrating diaphragm directly drives or detects the vibration of air dielectric, owing to lost the directivity of vibration, the most just lost ripple
The direction of field.Directivity described in conventional art refers to tropism, generally referred to as between sensitivity and sonic propagation direction
Relation.The direction of vibration lies in amplitude, and single-point list vibrating diaphragm cannot solve this direction.Fig. 1 is according to correlation technique
Single diaphragm structure directivity lose schematic diagram, as it is shown in figure 1, the angle of acoustic vibration direction and the axis of single vibrating diaphragm is θ.Sound
After ripple passes single vibrating diaphragm, relative to acoustic vibration direction, film direction of vibration changes, and film direction of vibration becomes and vibrating diaphragm method
Line direction is consistent.Single vibrating diaphragm of wavelength similar dimension electroresponse output signal in the ideal case be about sensitivity × acoustic pressure ×
Cos θ, θ are unknown changes.It follows that there is directivity Loss in single vibrating diaphragm so that the pickup effect of single vibrating diaphragm goes out
Existing deviation.
Fig. 2 is the pick up operating diagram of the full impregnated structure according to correlation technique, and Fig. 3 is the rear portion according to correlation technique
The pick up operating diagram of semiclosed ventilating structure, Fig. 4 is the pick up work of the rear portion full-closed structure according to correlation technique
Making schematic diagram, as shown in Figure 2,3, 4, the pick up of different structure, directivity is different, but directivity is not directivity, and sound wave passes
When being multicast at pick up vibrating diaphragm, all can occur that directivity Loss, i.e. sonic propagation and direction of vibration are with film direction of vibration not
Unanimously.
In prior art, the incoming wave of any direction shape, is all that the vertical vibration of vibrating diaphragm face drives, as shown in Figure 5 during playback
Existing three-dimensional playback technology schematic diagram, in Fig. 5, speaker system includes left vibrating diaphragm and right vibrating diaphragm, acoustic wavefield propagate one section away from
From, can scatter (as shown in circular arc in Fig. 5) with vibrating diaphragm midpoint for the center of circle, it is impossible to the spatial distribution of accurate simulation acoustic scene wave field
Form.This is the most disadvantageous to the playback realizing stereophonic field, has location inaccurate, and far and near without level, acoustic image is with audition
Position and the floating defect of attitude.
The problem that cannot realize holographic three-dimensional pickup and playback for pick up in prior art, the most not yet proposes effectively
Solution.
Summary of the invention
The invention provides a kind of holographic three-dimensional pick up, holography cannot be realized at least solving pick up in prior art
The problem of stereo pickup.
According to an aspect of the invention, it is provided a kind of holographic three-dimensional pick up, including: multiple pick ups and
Support structure, described supporting construction is used for supporting the plurality of pick up so that the equivalent operation face of the plurality of pick up is respectively
It is positioned on one of them face of a regular polygon, the center weight in the face that the center in each pick up equivalent operation face is corresponding
Close.
Preferably, described pick up is capacitor-type acoustical pick-up, electromagnetic type pick up, piezo-electric type pick up or electret type
Pick up.
Preferably, the area equation in the equivalent operation face of the plurality of pick up.
Preferably, each pick up is provided with positive and negative electrode, and the anelectrode on each pick up is as signal output part
Mouthful, the negative electrode of the plurality of pick up ground wire altogether.
Preferably, described holographic three-dimensional pick up also includes: acoustically transparent shell, the plurality of pick up and described supporting construction
It is placed on described acoustically transparent enclosure.
Preferably, described acoustically transparent shell being provided with signal string holes, output line and the described ground wire of described electrode are worn
Cross this signal string holes.
Preferably, described acoustically transparent shell is made up of wire netting.
Preferably, described acoustically transparent shell is provided with two short one long trident cardinal direction markers, is used for indicating described holography to stand
The putting position of body pick up.
Preferably, described supporting construction and described acoustically transparent shell use anti-resonance material to make.
Preferably, the intersection in the face corresponding to adjacent two pick ups is in vertical direction.
Preferably, described supporting construction is regular polygon supporting construction, and each of described regular polygon supporting construction is
Arbitrary surface or plane.
The holographic three-dimensional pick up of the present invention, has the response of the sound source of different directions before and after up and down, each
Intensity and phase place on direction are the most different, and playback can continue the true wavefield direction that record is on-the-spot, with prior art at human brain
The interior stereophonic sound system that could form acoustic image is compared, and principle is diverse, and holographic three-dimensional pick up can pick up acoustic scene
The direction in space phase property of field, gathers signal for holographic playback, such that it is able to the mode that physics wave field local reproduces, it is achieved entirely
The acoustics that breath is three-dimensional, is the first link of holographic three-dimensional sound technique.
Accompanying drawing explanation
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, is not intended that limitation of the invention.In the accompanying drawings:
Fig. 1 is that the single diaphragm structure directivity according to correlation technique loses schematic diagram；
Fig. 2 is the pick up operating diagram of the full impregnated structure according to correlation technique；
Fig. 3 is the pick up operating diagram of the semiclosed ventilating structure in the rear portion according to correlation technique；
Fig. 4 is the pick up operating diagram of the rear portion full-closed structure according to correlation technique；
Fig. 5 is the existing stereo pickup technology schematic diagram according to correlation technique；
Fig. 6 is the structural representation of holographic three-dimensional pick up according to embodiments of the present invention；
Fig. 7 is another structural representation of holographic three-dimensional pick up according to embodiments of the present invention；
Fig. 8 is the preferred structure schematic diagram of holographic three-dimensional pick up according to embodiments of the present invention；
Fig. 9 is another preferred structure schematic diagram of holographic three-dimensional pick up according to embodiments of the present invention；
Figure 10 is the single channel system actual measurement output schematic diagram according to correlation technique；
Figure 11 is holographic three-dimensional pick up actual measurement output schematic diagram according to embodiments of the present invention；
Figure 12 is the acoustically transparent casing appearance schematic diagram of holographic three-dimensional pick up according to embodiments of the present invention；
Figure 13 is the cardinal direction marker schematic diagram of holographic three-dimensional pick up according to embodiments of the present invention；
Figure 14 is that structural representation is picked up in omnidirectional's equilibrium vibration according to embodiments of the present invention；
Figure 15 is holographic three-dimensional pick up according to embodiments of the present invention and spherical wave the first schematic diagram；
Figure 16 is holographic three-dimensional pick up according to embodiments of the present invention and spherical wave the second schematic diagram；
Figure 17 is holographic three-dimensional pick up according to embodiments of the present invention and spherical wave the 3rd schematic diagram；
Figure 18 is the operation principle schematic diagram of the holographic three-dimensional pick up of two-way according to embodiments of the present invention.
Detailed description of the invention
Below in conjunction with 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 describes, 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 that those of ordinary skill in the art are obtained under not making creative work premise
Example, broadly falls into protection scope of the present invention.
Existing pickup technology has following deficiency: conversion efficiency is low；Frequency response is affected by acoustic short circuit, it is ensured that the difficulty of fidelity
Spend bigger；Acoustic impedance match further loss energy, reduces efficiency；Existing pick up has single channel single channel and the two-way dual pathways two
Kind, the twin-channel pick up of two-way could be formed stereo, and only laterally imaging, depth height in the plane that double-tone case is constituted
Identification is very poor.Based on this, in order to realize the holographic three-dimensional pickup effect of pick up, the invention provides a kind of holographic three-dimensional pick up
Sound device, it is each to equal isoequilibrium on space structure, and this is the structural advantage that in prior art, pick up does not possesses, profit
Holographic three-dimensional pickup can be realized with this structural advantage.Below the concrete structure of holographic three-dimensional pick up is introduced.
Fig. 6 is the structural representation of holographic three-dimensional pick up according to embodiments of the present invention, and as shown in Figure 6, this holography is stood
Body pick up includes: multiple pick ups (can be such as pickup vibrating diaphragm) and supporting construction, and this supporting construction is used for supporting multiple
Pick up so that the equivalent operation face of multiple pick ups lays respectively on one of them face of a regular polygon, each pick up
The center superposition in the face that the center in equivalent operation face is corresponding.The area equation in the equivalent operation face of multiple pick ups.
Pick up shown in Fig. 6 is circular configuration, and in a particular application, the shape of pick up is not limited to that, compares
The common pick up also having equilateral triangle, Fig. 7 is that another structure of holographic three-dimensional pick up according to embodiments of the present invention is shown
It is intended to, as it is shown in fig. 7, this 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 description is many
Position relationship between individual pick up.
The present invention designs specific respectively 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, the present invention not to limit this based on Demand Design
Fixed, as long as can guarantee that each to equal isoequilibrium.Preferably, can be designed as regular polygon shape, such as: positive tetrahedron shape
Shape, regular hexahedron shape, regular octahedron shape etc..The size of regular polygon supporting construction is generally higher than above-mentioned virtual positive multiaspect
Body.Preferably, each of regular polygon supporting construction can change into arbitrary surface, thus meets different demand.Support knot
The rigidity of structure is relevant to pickup effect, and therefore supporting construction can select different materials based on demand.
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, as long as normally can work in holographic three-dimensional pick up
, the present invention is without limitation.
More firm in order to ensure the structure of holographic three-dimensional pick up, pick up adjacent in multiple pick up can be designed
All contact with each other, it is achieved be fastenedly connected, to play the effect of support mutually.In Fig. 7, due to the restriction of positive tetrahedron structure, appoint
Anticipate and all contact with each other between two pick ups.On the premise of multiple pick ups connect fastening, the support of holographic three-dimensional pick up
Structure may be designed as the inscribe ball of the surrounded structure of multiple pick up, the preferably knot of holographic three-dimensional pick up as shown in Figure 8
Structure schematic diagram, thus on the basis of ensureing holographic three-dimensional pick up fastening structure, reduce the size of holographic three-dimensional pick up,
Reduction takes up room.
Shown in Fig. 9 is another preferred structure schematic diagram of holographic three-dimensional pick up, as it is shown in figure 9, holographic three-dimensional pickup
In device, each pick up is equivalently-sized, and the specific size of size can set according to practical situation, such as can be with design size
Less pick up, is connected by support between each pick up so that the equivalent operation face of multiple pick ups lays respectively at one
On one of them face of regular polygon.
It should be noted that the present invention provide holographic three-dimensional pick up be many axles based on virtual regular polygon (i.e.
The star-like axle of solid that the body center of regular polygon is constituted with the line of centres of each) formed divide equally solid space balance knot
Structure.The center with each, the body center of virtual regular polygon is connected respectively, forms the axle on each, coaxial at each axle
A pick up 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, and in order to position relationship to be described, A (t) is the pick up sound when θ=0 to sound wave
Should.As long as possess the pick up of above-mentioned cos θ relation, the holographic three-dimensional pick up with directional characteristic of the present invention can be made,
The present invention does not do at this and describes in detail one by one.
Holographic three-dimensional pick up includes that multiple pick up, each pick up are provided with positive and negative electrode, each pick up
On anelectrode can be total to ground wire as signal output port, the negative electrode of the plurality of pick up.Below with holographic three-dimensional pickup
Device illustrates as a example by including four pick ups.Figure 10 is the single channel system actual measurement output schematic diagram according to correlation technique,
As shown in Figure 10, monophonic system only has a road single track power signal output.Figure 11 is that holography according to embodiments of the present invention is stood
Body pick up actual measurement output schematic diagram, as shown in figure 11, holographic three-dimensional pick up has four road holographic three-dimensional power signal outputs.
The full integration of the four holographic three-dimensional power signals in road is exactly the response to acoustic wavefield, thus realizes 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 is high, closes the highly sensitive of space.Figure 12 is 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 12, multiple pick ups and supporting construction are put
Put in acoustically transparent enclosure, and insulate mutually with acoustically transparent shell.Acoustically transparent shell is made up of wire netting, and acoustically transparent shell is provided with signal
String holes, the output line of electrode and ground wire pass this signal string holes, consequently facilitating output line exports outside acoustically transparent shell
Face, effectively transmitted signal.In order to ensure the breathability of holographic three-dimensional pick up, acoustically transparent shell can arrange passage, such as, exist
Acoustically transparent case surface is uniformly arranged multiple little passage.In order to by the supporting construction of holographic three-dimensional pick up and thereon multiple pick up
Sound device is firm to be placed in acoustically transparent shell, and the shape of supporting construction can be designed as fitting easily into the shape of acoustically transparent shell.Pass through
This preferred implementation, can protect pick up, firm holographic three-dimensional pick up, strengthens the sensitivity of holographic three-dimensional pick up,
To guarantee holographic three-dimensional pickup effect.
In order to ensure holographic three-dimensional pickup effect, supporting construction and acoustically transparent shell typically use anti-resonance material to make.
In actual mechanical process, owing to holographic three-dimensional pick up needs to coordinate holographic three-dimensional player to be used together, for
Ensure that the two matches and reach optimal stereo acoustic effect, two short one long trident directions can be set on acoustically transparent shell and refer to
Mark, for indicating the putting position of holographic three-dimensional pick up.Thus ensure the intersection having the face corresponding to two adjacent pick ups
It is in vertical plane.
Typically, for possessing the holographic three-dimensional pick up of four pick ups (constitute positive tetrahedron structure), can be by positive four
One drift angle of face body structure is vertical the most down, to ensure one of them pick up horizontal positioned, this pick up in four pick ups
On the equilateral triangle face of corresponding positive tetrahedron structure, the opposite direction of the angular bisector at an angle, i.e. may be configured as above-mentioned direction
The direction of index.It is of course also possible to arrange other direction, the invention is not limited in this regard, as long as holographic three-dimensional pick up with
Arranging of the cardinal direction marker of holographic three-dimensional player is regular identical.Figure 13 is that according to embodiments of the present invention holographic three-dimensional is picked up
The cardinal direction marker schematic diagram of sound device, as shown in figure 13, the plane at the pick up place of horizontal positioned is provided with a cardinal direction marker,
Holographic three-dimensional pick up is put, it is achieved optimal stereo acoustic effect towards same orientation with holographic three-dimensional player.
Understanding from above description, the present invention constructs the equilibrium vibration of a three dimensions multiaspect omnidirectional and picks up structure,
Realize the full information of sound wave and pick up 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.Stereoeffect owing to the most simply equalizing is positive tetrahedron, typically with it for preferable space frame
Frame, physics realization is the easiest.Position with four faces of positive tetrahedron as reference, disposes acoustic-electric conversion vibrating diaphragm device respectively
(i.e. pick up).
Figure 14 is that omnidirectional's equilibrium vibration according to embodiments of the present invention picks up structural representation, as shown in figure 14, by positive four
Body wherein one side level in face is the first face 1 upward, and remaining several equilateral triangle face is respectively set to the second face 2, the 3rd face 3 and the
On four sides 4.The normal in these four faces, just constitutes vector and direction vector that three dimensions is divided equally.Knot is picked up in omnidirectional's equilibrium vibration
Structure picks up three vectors, it may be determined that unique vector, as long as the playback of each component geometric ratio, vibration vector synthesizes naturally, and this is just
Achieve directivity.Plus another one vector, not only strengthen directivity, moreover it is possible to embody the breathing scalar of sound wave, obtain more
Wave field information completely.
Figure 15 is holographic three-dimensional pick up according to embodiments of the present invention and spherical wave the first schematic diagram, and Figure 16 is according to this
The holographic three-dimensional pick up of inventive embodiments and spherical wave the second schematic diagram, Figure 17 is according to embodiments of the present invention holographic three-dimensional
Pick up and spherical wave the 3rd schematic diagram, as shown in figure 15, if each vector magnitude of holographic three-dimensional pick up is identical, then sphere
Ripple is circular spherical wave；As shown in figure 16, if each vector magnitude of holographic three-dimensional pick up is different, the shape of wavefront surface is had
State changes, namely has possessed three-dimensional space direction, then spherical wave is similar oval spherical wave；As shown in figure 17, it is on-the-spot
The spherical wave that the wave field gathered produces, it then follows the equilibrium relation of medium internal force, is similar to expand and by the centre of sphere to fluctuation sphere
The direction passage transmitted.
Figure 18 is the operation principle schematic diagram of the holographic three-dimensional pick up of two-way according to embodiments of the present invention, such as Figure 18 institute
Showing, the holographic three-dimensional pick up of left holographic three-dimensional pick up and the right side all can realize real stereo pickup.Present invention achieves and include
Ripple direction of vibration, at the Holographic test of interior sound wave field, is laid a good foundation for holographic three-dimensional sound technique.Holographic three-dimensional sound equipment
The single-path architecture of technology just has the response of the sound source of different directions, intensity on each face and phase place before and after up and down
All different, playback just can continue the true wavefield direction that record is on-the-spot, could form acoustic image in prior art in human brain
Stereophonic sound system is diverse in principle.It it is the local reproduction of on-the-spot sound field.If holographic three-dimensional sound technique uses
Double path system, so that it may realize horizontal broadening and the location of depth of phonotape and videotape further, compared with left-right stereo in traditional plane
System, has 3 D stereo acoustics.
To sum up, the present invention realizes techniques below effect:
1) pneumatic compression working method, acoustoelectric electroacoustic conversion efficiency is high；
2) without acoustic short circuit, fidelity is high；
3), during device design, utilize closing spatial elastic to realize acoustic impedance match, can further improve efficiency and fidelity；
4) single-path system just has certain three-dimensional stereo effect, the most 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, is better than tradition binaural skill
Art；
6) each passage can carry out multiple mathematics or electrically add and subtract, and forms multiple special sound field stiffening effect.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
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
Necessarily refer to identical embodiment or example.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 the purpose of the present invention, technical scheme and beneficial effect the most in detail
Describe in detail bright, be it should be understood that the specific embodiment that the foregoing is only the present invention, the guarantor being not intended to limit the present invention
Protect scope, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in this
Within the protection domain of invention.
Claims (11)
1. a holographic three-dimensional pick up, it is characterised in that including: multiple pick ups and supporting construction, described supporting construction is used
In supporting the plurality of pick up so that the equivalent operation face of the plurality of pick up lays respectively at wherein the one of a regular polygon
On individual face, the center superposition in the face that the center in each pick up equivalent operation face is corresponding.
Holographic three-dimensional pick up the most according to claim 1, it is characterised in that described pick up be capacitor-type acoustical pick-up,
Electromagnetic type pick up, piezo-electric type pick up or electret type pick up.
Holographic three-dimensional pick up the most according to claim 1, it is characterised in that the equivalent operation face of the plurality of pick up
Area equation.
Holographic three-dimensional pick up the most according to claim 1, 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.
Holographic three-dimensional pick up the most according to claim 4, it is characterised in that described holographic three-dimensional pick up also includes:
Acoustically transparent shell, the plurality of pick up and described supporting construction are placed on described acoustically transparent enclosure.
Holographic three-dimensional pick up the most according to claim 5, it is characterised in that be provided with holding wire on described acoustically transparent shell
Hole, the output line of described electrode and described ground wire pass this signal string holes.
Holographic three-dimensional pick up the most according to claim 5, it is characterised in that described acoustically transparent shell is made up of wire netting.
Holographic three-dimensional pick up the most according to claim 5, it is characterised in that
Two short one long trident cardinal direction markers it are provided with, for indicating the pendulum of described holographic three-dimensional pick up on described acoustically transparent shell
Put position.
Holographic three-dimensional pick up the most according to claim 5, it is characterised in that described supporting construction and described acoustically transparent shell
Anti-resonance material is used to make.
Holographic three-dimensional pick up the most according to claim 1, it is characterised in that
The intersection in the face corresponding to adjacent two pick ups is in vertical direction.
11. holographic three-dimensional pick ups according to claim 1, it is characterised in that described supporting construction is that regular polygon props up
Support structure, each of described regular polygon supporting construction is arbitrary surface or plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610750749.7A CN106210968B (en) | 2016-08-29 | 2016-08-29 | A kind of holographic three-dimensional sound pick-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610750749.7A CN106210968B (en) | 2016-08-29 | 2016-08-29 | A kind of holographic three-dimensional sound pick-up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106210968A true CN106210968A (en) | 2016-12-07 |
| CN106210968B CN106210968B (en) | 2019-06-07 |
Family
ID=57526680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610750749.7A Expired - Fee Related CN106210968B (en) | 2016-08-29 | 2016-08-29 | A kind of holographic three-dimensional sound pick-up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106210968B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042779A (en) * | 1974-07-12 | 1977-08-16 | National Research Development Corporation | Coincident microphone simulation covering three dimensional space and yielding various directional outputs |
| US20100119097A1 (en) * | 2007-08-10 | 2010-05-13 | Panasonic Corporation | Microphone device and manufacturing method thereof |
| CN104394498A (en) * | 2014-09-28 | 2015-03-04 | 北京塞宾科技有限公司 | A three-channel holographic sound field playback method and sound field collecting device |
| CN105447244A (en) * | 2015-11-18 | 2016-03-30 | 北京大学 | Method for distributing spherical microphone array of 3D recording system |
-
2016
- 2016-08-29 CN CN201610750749.7A patent/CN106210968B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042779A (en) * | 1974-07-12 | 1977-08-16 | National Research Development Corporation | Coincident microphone simulation covering three dimensional space and yielding various directional outputs |
| US20100119097A1 (en) * | 2007-08-10 | 2010-05-13 | Panasonic Corporation | Microphone device and manufacturing method thereof |
| CN104394498A (en) * | 2014-09-28 | 2015-03-04 | 北京塞宾科技有限公司 | A three-channel holographic sound field playback method and sound field collecting device |
| CN105447244A (en) * | 2015-11-18 | 2016-03-30 | 北京大学 | Method for distributing spherical microphone array of 3D recording system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106210968B (en) | 2019-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9706292B2 (en) | Audio camera using microphone arrays for real time capture of audio images and method for jointly processing the audio images with video images | |
| US7532734B2 (en) | Headphone for spatial sound reproduction | |
| US6845163B1 (en) | Microphone array for preserving soundfield perceptual cues | |
| CN107040843B (en) | Method for acquiring same sound source through two microphones and acquisition equipment | |
| TW201914317A (en) | Speaker and headphone layout for locating sound signals in space | |
| CA2295092C (en) | System for producing an artificial sound environment | |
| CN105101027A (en) | Real-time Control Of An Acoustic Environment | |
| US8442244B1 (en) | Surround sound system | |
| CN108702566A (en) | Cylindrical microphone array for effectively recording 3D sound fields | |
| JP2008543144A (en) | Acoustic signal apparatus, system, and method | |
| CN106303832A (en) | Speaker and the raising method of directivity, headset equipment and method | |
| BR9712912B1 (en) | method and device for projecting sound waves onto speakers. | |
| CN106303779A (en) | Earphone | |
| CN106358129B (en) | A kind of holographic three-dimensional loudspeaker | |
| US4122910A (en) | Omniphonic microphone and loudspeaker system | |
| US4658932A (en) | Simulated binaural recording system | |
| US20150055814A1 (en) | Headphone for reproducing sound stage effect | |
| CN106210968B (en) | A kind of holographic three-dimensional sound pick-up | |
| WO2018039844A1 (en) | Holographic stereo sound system | |
| JP5867799B2 (en) | Sound collecting / reproducing apparatus, program, and sound collecting / reproducing method | |
| CN106211004B (en) | A kind of holographic three-dimensional electrostatic loudspeaker | |
| CN106454616B (en) | Holographic three-dimensional sound system | |
| EP3065419A1 (en) | Portable recorder | |
| JP2012253754A (en) | Sound collecting microphone system | |
| Fukumori et al. | Digital archive for Japanese intangible cultural heritage based on reproduction of high-fidelity sound field in Yamahoko Parade of Gion Festival |
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: 20190607 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |