CN207232386U - A kind of microphone array arrangement for auditory localization - Google Patents
A kind of microphone array arrangement for auditory localization Download PDFInfo
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- CN207232386U CN207232386U CN201720696203.8U CN201720696203U CN207232386U CN 207232386 U CN207232386 U CN 207232386U CN 201720696203 U CN201720696203 U CN 201720696203U CN 207232386 U CN207232386 U CN 207232386U
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- microphone
- sound source
- auditory localization
- neighboring
- array arrangement
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- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The utility model discloses a kind of microphone array arrangement for auditory localization, including the first identical microphone of structure, second microphone, the 3rd microphone, the 4th microphone, the 5th microphone, the 6th microphone, first microphone, second microphone, the 3rd microphone, the 4th microphone, the 5th microphone, the 6th microphone are arranged at same plane and are distributed successively according to same even circumferential；Using the circumference center of circle O as starting point, angle α is 60 ° between the every two neighboring microphone of the described first to the 6th microphone；The scope of first microphone to the distance between the every two neighboring microphone of the 6th microphone L are 5 15cm.The utility model by selecting meticulously, it is proposed a kind of distinctive microphone arrangement structure, sound source position can be precisely calculated according to the structure need not set more microphone apparatus at the same time, reduce the manufacture cost of sound source locating device and have submitted the location efficiency of auditory localization.
Description
Technical field
Control field is the utility model is related to, is used for auditory localization microphone array arrangement more particularly to one kind.
Background technology
At present now, in field of sound source location, microphone array is frequently utilized that to calculate sound source position, when needing to improve
During the accuracy positioned to sound source, the mode of generally use increase microphone improves, but cloth can both be increased by increasing microphone
Line cost, while also increase the noise jamming between each microphone, therefore in the prior art, lack a kind of wheat of reasonable Arrangement
Gram wind structure so that increase the accuracy of auditory localization while noise jamming is farthest reduced between each microphone.
Therefore those skilled in the art are directed to developing a kind of microphone structure of reasonable Arrangement so that between each microphone
Increase the accuracy of auditory localization while farthest reducing noise jamming.
Utility model content
In view of the drawbacks described above of the prior art, technical problem to be solved in the utility model is to provide a kind of use
In auditory localization microphone array arrangement so that increase while noise jamming is farthest reduced between each microphone
The accuracy of auditory localization.
To achieve the above object, the utility model provide it is a kind of be used for auditory localization microphone array arrangement, bag
Include the first identical microphone of structure, second microphone, the 3rd microphone, the 4th microphone, the 5th microphone, the 6th microphone
The microphone array device of composition, first microphone, second microphone, the 3rd microphone, the 4th microphone, the 5th Mike
Wind, the 6th microphone are arranged at same plane and are distributed successively according to the even circumferential of same diameter；Using the circumference center of circle O as
Starting point, the described first to the 6th microphone are 60 ° per angle α between two neighboring microphone.
The scope of first microphone to the distance between the every two neighboring microphone of the 6th microphone L are 5-15cm.
Preferably, first microphone is arranged to 10cm to the distance between the 6th microphone each two microphone L.
In the technical program, the described first to the 6th microphone is arranged at same plane, and each two microphone is arranged to
Apart from identical, can ensure it is accurate under the premise of simplify calculation amount, if being not configured to same plane and each two Mike
Wind can then increase calculation amount if identical, increase development cost.
In the technical program, between first microphone and second microphone, second microphone and the 3rd microphone it
Between, between the 4th microphone and the 5th microphone, the distance between the 5th microphone and the 6th microphone cannot be less than
5cm；Because when distance is less than 5cm between each microphone, time delay is too small, and mistake is easily produced when calculating sound source position
Difference, and hypotelorism easily produces noise current between microphone；When the distance between each microphone is more than 15cm, sound source
Ground will be not to be regarded as point sound source, and when coordinates computed easily causes confusion, and reduces the stability of equipment.
In this case, first microphone, second microphone, the 3rd microphone, the 4th microphone, the 5th microphone,
Six microphones are arranged at same plane and are distributed successively according to the even circumferential of same diameter；Using the circumference center of circle O as starting point,
Angle α is 60 ° between the every two neighboring microphone of described first to the 6th microphone；Being for 60 degree of the angle α selected as must
Must, only when the angle α between every two neighboring microphone is arranged to 60 degree, and the first to the 6th microphone is uniformly divided
Cloth could realize that the microphone array that quantity is six more accurately calculates in same circumference with minimum calculation amount；
If α is arranged to other angles, the calculating of angular relationship can be added when calculating sound source position, calculation amount is increased, makes
Realized into auditory localization it is unstable, it is on the one hand same if the first to the 6th microphone is unevenly distributed over same circumference
It can make the calculation amount of auditory localization increase, reduce the stability that auditory localization calculates, on the other hand can not also pass through coordinate system
Conversion is realized and sound source position is more accurately calculated；
And it is also a necessary and optimal selection to be arranged to six microphones, from the foregoing it will be appreciated that each two Mike
Distance is not less than 5cm between wind, when setting more microphone such as eight microphones, the floor space of one side microphone array
It can accordingly increase, on the other hand can also increase calculation amount, reduce position stability；As less microphone such as four Mikes of setting
During wind, then can not carry out enough calculating with making sound source registration, select six microphones be arranged on same plane and according to
Even circumferential is distributed, and is to be balanced and made most preferably between the stability and accuracy of sound source position calculating is ensured
Select.
The beneficial effects of the utility model are：The utility model proposes a kind of distinctive microphone cloth by selecting meticulously
Structure is put, sound source position can be precisely calculated according to the structure need not set more microphone apparatus at the same time, drop
The low manufacture cost of sound source locating device and it have submitted the location efficiency of auditory localization.
Brief description of the drawings
Fig. 1 is the structure diagram of one embodiment of the utility model.
Fig. 2 is the coordinate system schematic diagram that sound source position T points are calculated according to the arrangement of Fig. 1.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples：
As shown in Figure 1 to Figure 2, a kind of microphone array arrangement, by the first identical microphone S1 of structure, the second wheat
Gram wind S2, the 3rd microphone S3, the 4th microphone S4, the 5th microphone S5, the 6th microphone S6 compositions, the first microphone S1,
Second microphone S2, the 3rd microphone S3, the 4th microphone S4, the 5th microphone S5, the 6th microphone S6 are arranged at same flat
Face is simultaneously distributed according to same even circumferential successively；Using circumference center of circle O as starting point, the first to the 6th microphone is per two neighboring Mike
Angle α is 60 ° between wind.
The distance between the every two neighboring microphones of first microphone S1 to the 6th microphone S6 L is 10cm.
In other embodiments, the distance between the every two neighboring microphone of the first to the 6th microphone L can also be set
The other values of 5-15cm are set to, to reach identical technique effect, such as 5cm, 6cm, 7cm, 8cm, 9cm, 11cm, 12cm, 13cm,
14cm, 15cm.
Using the arrangement of this programme, following methods can be utilized to calculate sound source position：
1) specific six microphone array is set to utilize information receiver as information receiver；
2) by the distance input main control module of the first microphone S1 and the 4th microphone S4；
3) time difference of voice signal is received simultaneously using time set measurement second microphone S2 and the first microphone S1
Record；
Measure the 3rd microphone S3 and the first microphone S1 receives time difference and the record of voice signal；
Measure the 4th microphone S4 and the first microphone S1 receives time difference and the record of voice signal；
Measure the 5th microphone S5 and the first microphone S1 receives time difference and the record of signal；
Measure the 6th microphone S6 and the first microphone S1 receives time difference and the record of voice signal；
4) master control module controls are using the straight line where the line L1 of the first microphone S1 and the 4th microphone S4 as x-axis,
It is origin as the first coordinate system using the midpoint O of L1, and according to the following formula with calculating sound source coordinate in the first coordinate system
Value：
Wherein, D is the distance between first microphone S1 and the 4th microphone S4；
C is sound propagation velocity；
t12The time difference of voice signal is received between second microphone S2 and the first microphone S1；
t13The time difference of voice signal is received between the 3rd microphone S3 and the first microphone S1；
t14The time difference of voice signal is received between the 4th microphone S4 and the first microphone S1；
t15The time difference of voice signal is received between the 5th microphone S5 and the first microphone S1；
t16The time difference of voice signal is received between the 6th microphone S6 and the first microphone S1；
x0For the x-axis coordinate on the sound source ground in the first coordinate system；
y0For the y-axis coordinate on the sound source ground in the first coordinate system；
z0For the z-axis coordinate on sound source ground in the first coordinate system；
r0For sound source the distance at the midpoint of distance the first microphone S1 and the 4th microphone S4；
x1、x2、x3The intermediate variable produced for calculating process, can calculate according to the variate-value and above-mentioned formula and speak
The coordinate value x on source ground0；
y1、y2The intermediate variable produced for calculating process, the spherical coordinates value on sound source ground can be calculated according to above-mentioned formula
y0；
r1The intermediate variable produced for calculating process, the spherical coordinates value r on sound source ground can be calculated according to above-mentioned formula0；
The preferred embodiment of the utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to the design of the utility model in domain
Available technical solution is tested, all should be in the protection domain being defined in the patent claims.
Claims (2)
1. a kind of microphone array arrangement for auditory localization, it is characterized in that：Including the first identical microphone of structure,
Second microphone, the 3rd microphone, the 4th microphone, the 5th microphone, the 6th microphone, first microphone, the second wheat
Gram wind, the 3rd microphone, the 4th microphone, the 5th microphone, the 6th microphone are arranged at same plane and successively according to same
Even circumferential is distributed；With the circumference center of circle (O) for starting point, between the described first to the 6th microphone is per two neighboring microphone
Angle (α) is 60 °；
The scope of first microphone to the distance between the every two neighboring microphone of the 6th microphone (L) are 5-15cm.
2. it is used for the microphone array arrangement of auditory localization as claimed in claim 1, it is characterized in that：First Mike
Wind is arranged to 10cm to the distance between the every two neighboring microphone of the 6th microphone (L).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720696203.8U CN207232386U (en) | 2017-06-15 | 2017-06-15 | A kind of microphone array arrangement for auditory localization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720696203.8U CN207232386U (en) | 2017-06-15 | 2017-06-15 | A kind of microphone array arrangement for auditory localization |
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| Publication Number | Publication Date |
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| CN207232386U true CN207232386U (en) | 2018-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720696203.8U Expired - Fee Related CN207232386U (en) | 2017-06-15 | 2017-06-15 | A kind of microphone array arrangement for auditory localization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110351633A (en) * | 2018-12-27 | 2019-10-18 | 腾讯科技（深圳）有限公司 | Sound collection equipment |
-
2017
- 2017-06-15 CN CN201720696203.8U patent/CN207232386U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110351633A (en) * | 2018-12-27 | 2019-10-18 | 腾讯科技（深圳）有限公司 | Sound collection equipment |
| CN110351633B (en) * | 2018-12-27 | 2022-05-24 | 腾讯科技（深圳）有限公司 | Sound collection device |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180413 Termination date: 20190615 |