CN208520985U - A kind of sonic location system based on multi-microphone array - Google Patents
A kind of sonic location system based on multi-microphone array Download PDFInfo
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- CN208520985U CN208520985U CN201821018215.6U CN201821018215U CN208520985U CN 208520985 U CN208520985 U CN 208520985U CN 201821018215 U CN201821018215 U CN 201821018215U CN 208520985 U CN208520985 U CN 208520985U
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Abstract
The utility model relates to a kind of sonic location systems based on multi-microphone array, including multiple audio sample devices and for according to multiple audio sample devices collected audio obtain the information processing centre of sound source position, system further includes electrically connected system, the electrically connected system includes skirting shell, with be placed in the intracorporal electrical guide rail of skirting shell, audio sample device is multi-microphone array, is set on skirting shell, and its power input is connect with electrical guide rail.Compared with prior art, the utility model combines microphone array and electrical guide rail connection structure, it each microphone array and is set on the skirting shell of electrically connected system, while convenient for arrangement, it will not be excessively lofty, by the way that flexible setting microphone array can be carried out, effectively evades dead angle etc., the beauty of environment is kept while promoting positioning performance.
Description
Technical field
The utility model relates to a kind of auditory localization technologies, fixed more particularly, to a kind of sound source based on multi-microphone array
Position system.
Background technique
Smart home is received by more and more people, but in the past smart home device control signal input according to
Rely in artificial, the mode of typewriting or selection, but this is apparently not final input mode, because input process is excessively cumbersome.
With the development of semantic understanding technology in recent years so that acoustic control be entered as in order to may, more and more producers
Start intelligent sound product of staking on, pin is carried out with the price for approaching cost price using small love sound equipment as large quantities of intelligent sounds of representative
It sells, purpose is the entrance in order to capture smart home.
However most of sound control smart home technologies are all conceived to semantics recognition now, although semantic understanding is strictly this neck
The core technology in domain, but light have accurately semantics recognition technology be still not able to provide optimal experience, typically, Hen Duoshi
Time needs to position sound source, for example, after in the instruction that user issues comprising directive property pronouns such as " we ", it is often subsequent
Processing, which executes, needs to be related to the positioning of sound source, and intelligent sound is powerless processing part operation at this time because its cannot obtain compared with
For accurate sound source position.
Certainly there are also indoor auditory localization technologies, such as 103364761 A of Chinese patent CN to disclose a kind of interior
Sonic location system and the method for using sound source in the system orientation room, are related to auditory localization technology.It is in order to solve due to
Block or acoustic target sounding be towards bring blind location area, under different application background to positioning accuracy it is different require it is adaptive
The problems such as complexity of adjustment system operations, precision is not high.It, will by the way that sound transducer is rationally distributed to three-dimensional space
The signal time sequence captured between sensor carries out related operation and obtains reaching time-difference, using the obtained time difference, resolves
Auditory localization model obtains the 3 D stereo positioning result to sound source；Sound source can be avoided very well by the distribution of reasonable sensor
The blind area of positioning occurs.The utility model is suitable for many indoor positioning to acoustic target.However it is not well solved
The problem of being merged between sensor and environment, cause it is very lofty, it is not beautiful enough.
Utility model content
The purpose of this utility model is exactly to provide a kind of based on more wheats to overcome the problems of the above-mentioned prior art
The sonic location system of gram wind array.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of sonic location system based on multi-microphone array, including multiple audio sample devices and for according to multiple
Audio sample device collected audio obtain the information processing centre of sound source position, the system also includes electrically connected systems
System, which includes skirting shell, and is placed in the intracorporal electrical guide rail of skirting shell, the audio sample device
It for microphone array, is set on skirting shell, and its power input is connect with electrical guide rail.
The microphone array includes:
Microphone, is equipped with multiple altogether, is used for sampled audio, and converts the audio into as electric signal；
Analog-digital converter is connect with all microphones, for electric signal to be converted to digital signal from analog signal form
Form；
Controller is connect with analog-digital converter converter；
Wireless data transceiver module is connect with controller, for receiving and dispatching electric signal.
Microphone number in single microphone array is 4~6.
The wireless data transceiver module is WiFi module.
The microphone array further includes casing, the analog-digital converter, controller, wireless data transceiver module and Mike
Wind is set in casing, and the casing is equipped with and passes through the through-hole to microphone acquisition port for air.
The microphone array is set to above skirting shell and slides along skirting shell extending direction.
Compared with prior art, the utility model has the following beneficial effects:
1) microphone array and electrical guide rail connection structure are combined, each microphone array and is set to electrically connected system
Skirting shell on, convenient for arrangement while, will not be excessively lofty, by the way that flexible setting microphone array can be carried out,
Effectively evade dead angle etc., the beauty of environment is kept while promoting positioning performance.
2) microphone array is set to above skirting shell and slides along skirting shell extending direction, so as to basis
Actual conditions adjust the position of microphone array, and without having to worry about powerup issue.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the back schematic diagram of electrically connected system；
Fig. 3 is the structural schematic diagram of microphone array；
Fig. 4 is the flow diagram of localization method；
Fig. 5 is positioning principle schematic diagram；
Wherein: 1, microphone array, 2, information processing centre, 3, skirting shell, 4, electrical guide rail, 11, microphone,
12, analog-digital converter, 13, controller, 14, wireless data transceiver module, 15, casing.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.The present embodiment is with the utility model
Implemented premised on technical solution, the detailed implementation method and specific operation process are given, but the guarantor of the utility model
Shield range is not limited to the following embodiments.
A kind of sonic location system based on multi-microphone array, as shown in Figure 1, including multiple audio sample devices and use
According to multiple audio sample devices collected audio obtain the information processing centre 2 of sound source position, specifically, due to such as
What proposes specific solution according to 2 localization of sound source of audio-frequency information and information processing centre in many documents,
Such as 103364761 A of Chinese patent CN then provides a mode, is no longer described in detail in the present embodiment, the present embodiment emphasis is explained
The structure for stating the application is improved, as shown in Fig. 2, system further includes electrically connected system, which includes skirting
Shell 3, and the electrical guide rail 4 being placed in skirting shell 3, audio sample device are microphone array 1, are set to skirting shell
On body 3, and its power input is connect with electrical guide rail 4.
As shown in figure 3, microphone array 1 includes:
Microphone 11, is equipped with multiple altogether, is used for sampled audio, and converts the audio into as electric signal；
Analog-digital converter 12 is connect with all microphones 11, for electric signal to be converted to number from analog signal form
Signal form；
Controller 13 is connect with 12 converter of analog-digital converter；
Wireless data transceiver module 14 is connect, for receiving and dispatching electric signal with controller 13.
Preferably, 11 number of microphone in single microphone array 1 is 4~6.
Preferably, wireless data transceiver module 14 is WiFi module.
Microphone array 1 further includes casing 15, analog-digital converter 12, controller 13, wireless data transceiver module 14 and wheat
Gram wind 11 is set in casing 15, and casing 15 is equipped with and passes through the through-hole to 11 acquisition port of microphone for air.
Microphone array 1 is set to 3 top of skirting shell and slides along 3 extending direction of skirting shell, so as to root
The position of microphone array 1 is adjusted according to actual conditions, and without having to worry about powerup issue.
Since by microphone array 1 and the combination of 4 connection structure of electrical guide rail, each microphone array 1 connects with electric power is set to
, will not be excessively lofty while convenient for arrangement on the skirting shell 3 of welding system, by the way that flexible setting Mike can be carried out
Wind array 1 effectively evades dead angle etc., and the beauty of environment is kept while promoting positioning performance
Localization method can use existing localization method, can also use improved localization method, such as information processing
Center 2 includes processor interconnected and memory, and the program for being stored on memory and being executed by processor, processing
Device performs the steps of when executing program
Step S1: the intensity of sound and orientation of the sound source that each microphone array 1 acquires are received, wherein microphone array 1 is adopted
The intensity of sound of the sound source of collection specifically:
Wherein: volume is the intensity of sound for the sound source that microphone array 1 acquires, skFor by kth in microphone array 1
A 11 collected intensity of sound of institute of microphone, n is the number of microphone 11 in microphone array 1.
Step S2: sound source is calculated at a distance from each microphone 11 according to the intensity of sound that each microphone array 1 acquires；
Step S3: according to sound source at a distance from each microphone array 1 and corresponding orientation, in conjunction with each microphone array 1
Coordinate, obtain the coordinate of sound source.
Step S3 is specifically included:
Step S31: it according to sound source at a distance from each microphone array 1 and corresponding orientation, respectively obtains by each Mike
The sound source coordinate that wind array 1 obtains；
Step S32: according to the sound source coordinate obtained by each microphone array 1, final sound source coordinate is obtained after averaging.
As shown in figure 5, positioning paddy process is introduced by taking two microphone arrays 1 as an example below, it is assumed that there are two microphone array
Column 1 (patent is not limited in two microphone arrays 1, can there is multiple microphone arrays 1), are denoted as A1 and A2 respectively, and two
The distance between microphone array 1 is denoted as d, and the intensity that two microphones 11 are calculated is respectively volume1 and volume2,
According to the relationship between intensity of sound and distance, the distance that can estimate sound source to microphone array 1 is respectively dist1 and dist2,
The orientation that the sound source that technology obtains is formed using steerable beam is respectively angle1 and angle2, it is possible thereby to using triangulation
The position (x, y) of sound source is calculated in technology are as follows:
X=mean (dist1*cos (angle1), dist2*cos (angle2))
Y=mean (dist1*sin (angle1), dist2*sin (angle2))
Mean function representation therein is averaged.
Indoor sonic location system based on multi-microphone array 1 consists of two parts: first is that multiple microphone arrays 1,
Each microphone array 1 includes a MCU, a WiFi module, ADC and 4~6 microphone 11；Second is that acoustic information
Processing center 2 includes MCU and WiFi module.Each microphone 11 on 1 plate of microphone array can obtain
The analog signal of sound is converted to digital signal by ADC chip, and the intensity of sound then can be directly calculated on MCU, benefit
Enhancing, the denoising of signal can be carried out with beamforming algorithm, and calculate the orientation of sound, it finally will be every using WiFi module
The intensity of a 1 sound of microphone array and azimuth synchro are to acoustic information system center 2.Information processing centre 2 passes through WiFi mould
Block receives the intensity of sound and orientation that each microphone array 1 transmits, and then calculates sound source in room using principle of triangulation
Between in position.
Since indoor sonic location system uses distributed multi-microphone array 1, the independent fortune of each microphone array 1
Row will realize accurate auditory localization, and it is the critical issue for needing to solve that the signal between each microphone array 1, which synchronizes,.This
System intercepts voice signal using word is waken up, and then analyzes the intensity and orientation of voice signal, finally utilizes the original of triangulation
Reason carries out auditory localization.Specific way is that sound can pass to each 1 module of microphone array, when microphone array 1 captures
When the instruction of wake-up, just the corresponding voice signal of wake up instruction is intercepted out, calculate the intensity of sound of the segment signal, and utilized
The orientation that beamforming algorithm calculates signal sends it to sound after each microphone array 1 calculates intensity of sound and orientation
Sound information processing centre 2, acoustic information system center 2 is after the intensity of sound and orientation for receiving each microphone array 1, benefit
The position of sound source is calculated with principle of triangulation.
Claims (6)
1. a kind of sonic location system based on multi-microphone array, including multiple audio sample devices and for according to multiple sounds
Frequency sampling device collected audio obtain the information processing centre of sound source position, which is characterized in that the system also includes
Electrically connected system, the electrically connected system include skirting shell, and are placed in the intracorporal electrical guide rail of skirting shell, the sound
Frequency sampling device is microphone array, is set on skirting shell, and its power input is connect with electrical guide rail.
2. a kind of sonic location system based on multi-microphone array according to claim 1, which is characterized in that the wheat
Gram wind array includes:
Microphone, is equipped with multiple altogether, is used for sampled audio, and converts the audio into as electric signal；
Analog-digital converter is connect with all microphones, for electric signal to be converted to digital signal form from analog signal form；
Controller is connect with analog-digital converter converter；
Wireless data transceiver module is connect with controller, for receiving and dispatching electric signal.
3. a kind of sonic location system based on multi-microphone array according to claim 2, which is characterized in that single more
Microphone number in microphone array is 4~6.
4. a kind of sonic location system based on multi-microphone array according to claim 2, which is characterized in that the nothing
Line data transmit-receive module is WiFi module.
5. a kind of sonic location system based on multi-microphone array according to claim 2, which is characterized in that the wheat
Gram wind array further includes casing, and the analog-digital converter, controller, wireless data transceiver module and microphone are set to casing
It is interior, and the casing is equipped with and passes through the through-hole to microphone acquisition port for air.
6. a kind of sonic location system based on multi-microphone array according to claim 5, which is characterized in that the wheat
Gram wind array is set to above skirting shell and slides along skirting shell extending direction.
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| CN201821018215.6U CN208520985U (en) | 2018-06-27 | 2018-06-27 | A kind of sonic location system based on multi-microphone array |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108680902A (en) * | 2018-06-27 | 2018-10-19 | 相舆科技（上海）有限公司 | A kind of sonic location system based on multi-microphone array |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680902A (en) * | 2018-06-27 | 2018-10-19 | 相舆科技（上海）有限公司 | A kind of sonic location system based on multi-microphone array |
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