CN110049408A - A kind of microphone speaker array formation optimization method - Google Patents
A kind of microphone speaker array formation optimization method Download PDFInfo
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- CN110049408A CN110049408A CN201910388695.8A CN201910388695A CN110049408A CN 110049408 A CN110049408 A CN 110049408A CN 201910388695 A CN201910388695 A CN 201910388695A CN 110049408 A CN110049408 A CN 110049408A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/027—Spatial or constructional arrangements of microphones, e.g. in dummy heads
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
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- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a kind of microphone speaker array formation optimization methods, and the coordinate position of sound source and microphone formation is simulated in setting in software；The dynamic acoustical signal that each microphone position should receive is obtained by sound field simulation calculation；Dynamic acoustical signal is converted into being input to after electric signal in corresponding coupler sound source, coupler sound source then one-to-one sound radiation pressure signal to microphone；After each microphone collects acoustical signal in microphone speaker array, localization of sound source is obtained by auditory localization algorithm；By localization of sound source with simulate sound source resolution ratio, dynamic range, in terms of carry out quantitative analysis compared with；Different microphone array array types can be obtained by changing microphone number, spacing and coordinate.The method of the present invention can substantially reduce formation selection difficulty, and accomplish quantitative analysis without processing microphone array in this way；And the positioning result of a variety of formations can be easily tested, and then select more particularly suitable microphone formation.
Description
Technical field
The present invention relates to a kind of microphone speaker array formation optimization methods.
Background technique
Acoustic array using increasingly extensive, but for acoustic array system and product, whether system accurate positioning
There is very big relationship with the structure of microphone array.Microphone array array type is generally selected according to sound source type detected at present
It selects, the number of microphone is selected according to algorithm and precision prescribed, and the spacing between microphone requires to select according to algorithm.Accomplish
Compare fine quantitative analysis, needs to expend a large amount of manpower and material resources and make the microphone arrays of a variety of formations and carry out experiment ratio
Compared with the number and spacing of microphone can also be combined into a variety of situations at the same time, this makes quantifying for microphone array array type
Analysis becomes a difficulty.
Summary of the invention
The object of the present invention is to provide a kind of microphone speaker array formation optimization methods, imitative using sound source modeling method
The radiated sound field of very any spatial sound source, and sound field information, sound field weight are rebuild in signal field using a set of sound source modeling device
Precision is built to be determined by sound source modeling node (coupler sound source)；Hardware when the method for the present invention eliminates microphone array design is set
Work is counted, and only by software setting is the microphone array of all formations of analog.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of microphone speaker array formation optimization method, comprising the following steps:
(1) sound source position is simulated in setting in software, and according to the position of each microphone in the microphone speaker array of design
Set the position that relationship sets each microphone relative analog sound source in software；
(2) radiated sound field of simulation sound source is calculated by numerical value, and each microphone institute is obtained by sound field simulation calculation
In the dynamic acoustical signal that position should receive；
(3) it is input to after the dynamic acoustical signal that each microphone position being calculated should receive being converted into electric signal
In corresponding coupler sound source, coupler sound source then one-to-one sound radiation pressure signal to microphone；
(4) after each microphone collects acoustical signal in microphone speaker array, spatial sound is carried out by auditory localization algorithm
The positioning and acoustic imaging in source, to obtain localization of sound source；
(5) localization of sound source obtained by auditory localization algorithm is compared with simulation sound source, if resolution ratio, dynamic range, fixed
Position precision in error range when；
(6) if any one of resolution ratio, dynamic range, positioning accuracy not in error range when, repeat step (1) to (5),
And the quantity of microphone and/or the position of each microphone relative analog sound source are adjusted in step (1), up to resolution ratio, move
State range, positioning accuracy are in error range.
Preferably, the simulation sound source includes point sound source, area source of sound, volume sound source, irregular body sound source.
It is highly preferred that the point sound source includes single point sound source, multiple discrete distribution point sound sources, continuously distributed point sound source
Set.
Preferably, the sound field simulation calculation includes finite element method, energy statistics method, Element BEM.
Preferably, the dynamic acoustical signal includes sound pressure amplitude, sound frequency harmony signal phase.
Preferably, the dynamic acoustical signal that the sound pressure signal of the coupler sound source radiation and the sound field simulation calculation obtain
Unanimously.
Preferably, the auditory localization algorithm is Beamforming Method.
Due to the application of the above technical scheme, compared with the prior art, the invention has the following advantages: a kind of wheat of the present invention
Gram wind microphone array array type optimization method, all microphone formations only need software that coordinate position is arranged, without processing wheat
Gram wind array can substantially reduce formation selection difficulty in this way, and accomplish quantitative analysis；In the method for the present invention in microphone array
Microphone number and microphone between spacing can be arranged in spatial sound source analogy method, by change number,
Away from can advantageously obtain very much different microphone array array types with microphone coordinate, without truly by microphone
Device is placed at actual spatial position.Using the method for the present invention method can easily more different formations microphone
The positioning accuracy and identification of sound source performance of array, do not need to make a large amount of microphone array, reduce costs, and can be very
The positioning result for easily testing a variety of formations, by localization of sound source and simulation sound source in resolution ratio, dynamic range, positioning accuracy etc.
Aspect carries out quantitative analysis comparison, and then selects more particularly suitable microphone formation, to complete to a variety of microphone formations
Optimization.
Detailed description of the invention
Attached drawing 1 is sound source modeling and auditory localization flow chart in the method for the present invention.
Specific embodiment
The technical solution of the present invention will be further described below with reference to the accompanying drawings.
A kind of above-mentioned microphone speaker array formation optimization method, comprising the following steps:
(1) sound source modeling method is used, in software setting simulation sound source position, and according to the microphone speaker array of design
In the positional relationship of each microphone set the position of each microphone relative analog sound source in software；Simulating sound source includes a little
Sound source, area source of sound, volume sound source, irregular body sound source etc.；Point sound source include single point sound source, multiple discrete distribution point sound sources,
The set etc. of continuously distributed point sound source.
(2) radiated sound field of simulation sound source is calculated by numerical value, and each Mike is obtained by sound field simulation calculation
The dynamic acoustical signal that wind position should receive；Sound field simulation calculation includes finite element method, energy statistics method, boundary element side
Method etc.；Dynamic acoustical signal includes sound pressure amplitude, sound frequency harmony signal phase etc..
(3) the dynamic acoustical signal that each microphone position being calculated should receive is converted into defeated after electric signal
Enter into corresponding coupler sound source, coupler sound source then one-to-one sound radiation pressure signal to microphone；Coupler sound source
The sound pressure signal of radiation is consistent with the dynamic acoustical signal that sound field simulation calculation obtains.By multiple coupler sound sources by sound pressure signal
It is input in the corresponding microphone of microphone array, i.e. analog microphone array each wheat in the presence of practical sound source
Spatial position and collected acoustical signal locating for gram wind.Coupler sound source is a kind of according to input analog electrical signal output sound wave
Standard set-up, the amplitude and phase accuracy of device output sound wave can calibrate by high-precision microphone, and meet GB/T
15173-1994 standard requirements pass through coupler sound source, that is, exportable voice signal arbitrarily set.
(4) after each microphone collects acoustical signal in microphone speaker array, sky is carried out by auditory localization algorithm
Between sound source positioning and acoustic imaging, to obtain localization of sound source；Sound source modeling and auditory localization process are as shown in Figure 1；
In the present embodiment, auditory localization algorithm is Beamforming Method:
Beam forming method is a kind of advanced Noise Sources Identification localization method, and this method is by multiple microphones according to certain geometry knot
Structure rearranges microphone array, and carries out multi-point sampling and processing to space sound field using microphone array, then by adding
Power combines the signal on all microphones, extracts array received signal and its characteristic information, while interference can be inhibited to make an uproar
Sound, the signal in every other direction of decaying.The performance of Wave beam forming and the geometry of array are related, such as the pore size of array
I.e. the out to out of array, array element spacing and array element arrangement mode etc. can all influence the performance of Wave beam forming, therefore microphone
The formation design (i.e. the arrangement mode of microphone) of array is to determine one of microphone array performance principal element, to microphone array
The formation of column optimizes extremely important.
(5) (especially simulation sound source is point sound source, line sound as known to the position of spatial simulation sound source and sound field characteristics
When source, spherical sound source, sound field characteristics can be used accurate analytic solutions method and obtain), determine what is obtained by auditory localization algorithm
Position sound source with simulate sound source be compared, if resolution ratio, dynamic range, positioning accuracy in error range when.
(6) if any one of resolution ratio, dynamic range, positioning accuracy not in error range when, repeat step (1) extremely
(5), the quantity of microphone and/or the position of each microphone relative analog sound source and are in step (1) adjusted, until differentiating
Rate, dynamic range, positioning accuracy are in error range.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand the contents of the present invention and be implemented, and it is not intended to limit the scope of the present invention, it is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the scope of protection of the present invention.
Claims (7)
1. a kind of microphone speaker array formation optimization method, it is characterised in that: the following steps are included:
(1) sound source position is simulated in setting in software, and according to the position of each microphone in the microphone speaker array of design
Set the position that relationship sets each microphone relative analog sound source in software；
(2) radiated sound field of simulation sound source is calculated by numerical value, and each microphone institute is obtained by sound field simulation calculation
In the dynamic acoustical signal that position should receive；
(3) it is input to after the dynamic acoustical signal that each microphone position being calculated should receive being converted into electric signal
In corresponding coupler sound source, coupler sound source then one-to-one sound radiation pressure signal to microphone；
(4) after each microphone collects acoustical signal in microphone speaker array, spatial sound is carried out by auditory localization algorithm
The positioning and acoustic imaging in source, to obtain localization of sound source；
(5) localization of sound source obtained by auditory localization algorithm is compared with simulation sound source, if resolution ratio, dynamic range, fixed
Position precision in error range when；
(6) if any one of resolution ratio, dynamic range, positioning accuracy not in error range when, repeat step (1) to (5),
And the quantity of microphone and/or the position of each microphone relative analog sound source are adjusted in step (1), up to resolution ratio, move
State range, positioning accuracy are in error range.
2. a kind of microphone speaker array formation optimization method according to claim 1, it is characterised in that: the simulation
Sound source includes point sound source, area source of sound, volume sound source, irregular body sound source.
3. a kind of microphone speaker array formation optimization method according to claim 2, it is characterised in that: described sound
Source includes the set of single point sound source, multiple discrete distribution point sound sources, continuously distributed point sound source.
4. a kind of microphone speaker array formation optimization method according to claim 1, it is characterised in that: the sound field
Simulation calculation includes finite element method, energy statistics method, Element BEM.
5. a kind of microphone speaker array formation optimization method according to claim 1, it is characterised in that: the dynamic
Acoustical signal includes sound pressure amplitude, sound frequency harmony signal phase.
6. a kind of microphone speaker array formation optimization method according to claim 1, it is characterised in that: the coupling
The sound pressure signal of chamber sound source radiation is consistent with the dynamic acoustical signal that the sound field simulation calculation obtains.
7. a kind of microphone speaker array formation optimization method according to claim 1, it is characterised in that: the sound source
Location algorithm is Beamforming Method.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110428851A (en) * | 2019-08-21 | 2019-11-08 | 浙江大华技术股份有限公司 | Beamforming Method and device, storage medium based on microphone array |
| CN111239688A (en) * | 2020-01-20 | 2020-06-05 | 南京邮电大学 | Mapping calibration method of distributed multi-microphone array based on calibration source |
| CN111475961A (en) * | 2020-04-21 | 2020-07-31 | 中国空气动力研究与发展中心低速空气动力研究所 | Adaptive array type optimization design method of microphone array |
| RU2734289C1 (en) * | 2019-12-02 | 2020-10-14 | Федеральное государственное казенное военное образовательное учреждение высшего образования "Михайловская военная артиллерийская академия" Министерства обороны Российской Федерации | Method of positioning audio signal source using sound ranging system |
| CN111951833A (en) * | 2020-08-04 | 2020-11-17 | 科大讯飞股份有限公司 | Voice test method and device, electronic equipment and storage medium |
| CN112489667A (en) * | 2019-08-22 | 2021-03-12 | 北京声智科技有限公司 | Audio signal processing method and device |
| CN113008363A (en) * | 2021-03-16 | 2021-06-22 | 国网山东省电力公司东营供电公司 | Multi-resonance-point microphone array and arrangement method thereof |
| WO2022041219A1 (en) * | 2020-08-31 | 2022-03-03 | 华为技术有限公司 | Sound source ranging method, device and system |
| CN114268883A (en) * | 2021-11-29 | 2022-04-01 | 苏州君林智能科技有限公司 | Method and system for selecting microphone placement position |
| CN114720943A (en) * | 2022-06-06 | 2022-07-08 | 深圳市景创科技电子股份有限公司 | Multi-channel sound source positioning method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110428851B (en) * | 2019-08-21 | 2022-02-18 | 浙江大华技术股份有限公司 | Beam forming method and device based on microphone array and storage medium |
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| CN111239688B (en) * | 2020-01-20 | 2021-10-26 | 南京邮电大学 | Mapping calibration method of distributed multi-microphone array based on calibration source |
| CN111475961B (en) * | 2020-04-21 | 2023-01-10 | 中国空气动力研究与发展中心低速空气动力研究所 | Adaptive array type optimization design method of microphone array |
| CN111475961A (en) * | 2020-04-21 | 2020-07-31 | 中国空气动力研究与发展中心低速空气动力研究所 | Adaptive array type optimization design method of microphone array |
| CN111951833A (en) * | 2020-08-04 | 2020-11-17 | 科大讯飞股份有限公司 | Voice test method and device, electronic equipment and storage medium |
| CN111951833B (en) * | 2020-08-04 | 2024-08-23 | 科大讯飞股份有限公司 | Voice test method, device, electronic equipment and storage medium |
| WO2022041219A1 (en) * | 2020-08-31 | 2022-03-03 | 华为技术有限公司 | Sound source ranging method, device and system |
| CN113008363A (en) * | 2021-03-16 | 2021-06-22 | 国网山东省电力公司东营供电公司 | Multi-resonance-point microphone array and arrangement method thereof |
| CN114268883A (en) * | 2021-11-29 | 2022-04-01 | 苏州君林智能科技有限公司 | Method and system for selecting microphone placement position |
| CN114720943A (en) * | 2022-06-06 | 2022-07-08 | 深圳市景创科技电子股份有限公司 | Multi-channel sound source positioning method and system |
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