CN107948900A - A kind of electronic equipment microphone array consistency detecting method and its device - Google Patents
A kind of electronic equipment microphone array consistency detecting method and its device Download PDFInfo
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- CN107948900A CN107948900A CN201711016983.8A CN201711016983A CN107948900A CN 107948900 A CN107948900 A CN 107948900A CN 201711016983 A CN201711016983 A CN 201711016983A CN 107948900 A CN107948900 A CN 107948900A
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- microphone
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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
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of electronic equipment microphone array consistency detecting method and its device, which includes：Source of sound is located at the center of microphone array in electronic equipment, records at the same time to each microphone of microphone array, and collection obtains the corresponding channel audio file of each microphone；The audio frequency parameter of conversion extraction microphone from audio file；The corresponding channel audio parameter of each microphone is contrasted with mean square deviation, draws error amount；According to error amount whether in the allowed band of setting, confirm whether microphone array uniformity is qualified.The present invention can realize detection whether qualified to product microphone matrix uniformity on production line with high-accuracy high-efficiency rate：Also, terminal user can also during product use Self-operating, to determine whether microphone has the situation of damage.
Description
Technical field
The present invention relates to its device of the detection method of the microphone array in a kind of electronic equipment, a kind of particularly electronics is set
The detection method and its device of standby middle microphone array uniformity.
Background technology
Now in the electronic device, for example sound pick-up outfit, intelligent sound box etc. can all use microphone array, be made an uproar with reducing background
Sound, improves recording quality.Microphone array (Microphone Array) technology is started in the seventies and eighties in last century, is one group
Microphone is located at space diverse location and arranges the array to be formed by certain regular shape, is that spatial voice signal is carried out
A kind of device of spatial sampling.According to the distance of distance between sound source and microphone array, can divide the array near field model and
Far field model, both no absolute standards of division, microphone array are widely used to far field pick up facility, use Mike
How the equipment of wind quickly confirms that microphone array uniformity becomes the key subject of a raising production efficiency in volume production.
Chinese invention patent CN106792415A discloses a kind of test method and device for digital microphone array,
The test method includes：Block the pickup hole of any microphone in a pair of of microphone；Digital speech is believed according to clock signal
Number handled to obtain two-way analog voice signal, respectively as the first microphone signal and second microphone signal；Calculate the
Voltage difference between one microphone signal and second microphone signal；Judge digital microphone array whether just according to voltage difference
Often.
Except the above method, those skilled in the art also seek it is other be suitable for industrial production in more it is accurate efficiently examine
Survey method.
The content of the invention
The present invention is intended to provide whether a kind of high accuracy, efficient measurement microphone parameters quality are qualified, and fit
The method of detection and startup self-detection in industrialized production to microphone array uniformity.
The detection device that another object of the present invention is designed for offer based on above-mentioned detection method.
To achieve the above object, the present invention provides following solution：
A kind of electronic equipment microphone array consistency detecting method, includes the following steps：
1st, source of sound is located at the center of microphone array in electronic equipment, and each microphone of microphone array is recorded at the same time
Sound, collection obtain the corresponding channel audio file of each microphone；Preferably, the audio file is done into FFT (fast Fouriers
Conversion) change, obtain the audio frequency parameter of each microphone.
2nd, the audio frequency parameter of extraction microphone is changed from audio file；Wherein, preferably described audio frequency parameter include amplitude,
Frequency and phase parameter, can also including harmonic wave etc. parameter.
3rd, the corresponding channel audio parameter of each microphone and mean square deviation are contrasted, draws error amount；
4th, according to error amount whether in the allowed band of setting, confirm whether microphone array uniformity is qualified.
It is further preferred that above-mentioned microphone array uniformity as a result, being displayed whether in different colors by LED light
It is qualified.
Conceived based on foregoing invention, the present invention provides a kind of electronic equipment microphone array consistency detection device, with electricity
Microphone array in sub- equipment, which coordinates, to be implemented, and source of sound is located at the center of the microphone array, which includes storage
Device, processor and storage on a memory and the computer program that can run on a processor, the processor execution journey
Following steps are realized during sequence：
1st, each microphone corresponding channel audio file of microphone array when collection is recorded at the same time；Preferably, it is described
Audio file does FFT conversions, obtains the audio frequency parameter of each microphone；
2nd, the audio frequency parameter of extraction microphone is changed from audio file；Wherein, the audio frequency parameter includes amplitude, frequency
One or more of rate, phase parameter, harmonic wave；
3rd, the corresponding channel audio parameter of each microphone and mean square deviation are contrasted, draws error amount；
4th, according to error amount whether in the allowed band of setting, confirm whether microphone array uniformity is qualified.
Preferably, which further includes LED light, for showing the knot of the microphone array uniformity
Fruit, wherein, qualification is displayed whether by LED light in different colors.
Technical scheme can realize that high accuracy, the microphone array of efficient detection electronic equipment are consistent
Property, to detect underproof microphone array, so as to improve the ex factory pass rate of digital microphone array.Due in detection device
It is placed in electronic equipment, user can also realize the startup self-detection of equipment during product use, whether to find microphone
There are failure.
Brief description of the drawings
Following schematic diagram can be better understood from reference to embodiment, this is illustrative, not any to the present invention
Technical solution limitation.Particularly, the structure painted in attached drawing, ratio, size etc., are only used for coordinating specification prompting
Content, so that those skilled in the art understands and reads, is not limited to the enforceable restriction of the present invention.
The work flow diagram of the detection method of Fig. 1 present invention；
The distribution signal of the microphone array of Fig. 2 present invention；
The circuit theory schematic diagram of the detection device of Fig. 3 present invention；
The detection method of Fig. 4 present invention work flow diagram in concrete application example.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Term used in this application, microphone array is one group of microphone spatially with different shape regular arrangement shape
Into array, be to spatial voice signal carry out spatial sampling a kind of device.Wherein, the quantity of microphone is more than 2, than
More typical 4,5 or 8 microphones composition array.The present invention is not limited the quantity of microphone, array
Shape is regular shape, such as annular, equilateral geometric form etc., as long as its its satisfaction is equally spaced i.e. centered on common source of sound
Can.
As shown in Figs 1-4, the present invention provides a kind of microphone array consistency detection device 10, is built in electronic equipment
On, such as intelligent sound box.By taking the array of 8 microphones shown in Fig. 2 as an example, 8 microphones 2 are uniformly distributed in 8 of circumference
Fixed point microphone and a loudspeaker 1 positioned at the center of circle form.8 fixed point microphones 2 with straight line connection in octagon is waited, as adopting
If installed with which kind of microphone, installation and in which way, those skilled in the art can be according to the needs of electronic equipment
Make choice.The detection device includes memory (such as Flash storages) 3, processor (CPU) 4 and storage on a memory and can
The computer program run on a processor.Detection starts, and step 101, loudspeaker 1 play the sound of a segment standard frequency, Mike
Wind array is recorded, and collection obtains 8 channel audio files, is stored in Flash chip；Step 102, then by CPU into
Row computing, does above-mentioned voice data FFT conversions and obtains as a result, sound amplitude, frequency and phase including 8 sound channels etc. are joined
Number；Step 103,8 sound channels are done with mean square deviation, the parameters of the corresponding sound channel of more each microphone, obtain error amount；Step
Rapid 104, confirm that error amount is qualified without departing from error setting range, microphone array uniformity；Step 105, confirm that error amount surpasses
Go out error setting range, microphone array uniformity is unqualified, and detection terminates.Quickly identified for the ease of testing staff, can be with
Different Results are shown by the color of LED light, LED light display green represents that detection is qualified, and red represents that detection is unqualified.
The detection method of above-described embodiment and the application scenarios of detection device can include two kinds：
1st, detection whether qualified to product microphone matrix uniformity on production line：In intelligent sound box production process,
Confirm that microphone matrix uniformity is qualified, detect underproof microphone array.
2nd, the self-test during product use：Such as booting computer BIOS self-tests, intelligent sound box product can start shooting
When use this microphone array uniformity self-checking unit, whether detection intelligent sound box product microphone in service life damages
It is bad.
The present invention is not limited to embodiment discussed above.The description to embodiment is intended to explain and says above
Bright technical solution of the present invention.Above-described embodiment is used for disclosing the optimal implementation of the present invention, with
Those of ordinary skill in the art are enabled to reach this using the numerous embodiments and a variety of alternatives of the present invention
The purpose of invention.The obvious conversion or replacement that are enlightened based on the present invention should also be as being considered within the protection model of the present invention
Enclose.
Claims (8)
1. a kind of electronic equipment microphone array consistency detecting method, it is characterised in that include the following steps：
(1) source of sound is located at the center of microphone array in electronic equipment, records, adopts at the same time to each microphone of microphone array
Collection obtains the corresponding channel audio file of each microphone；
(2) audio frequency parameter of extraction microphone is changed from audio file；
(3) the corresponding channel audio parameter of each microphone is contrasted with mean square deviation, draws error amount；
(4) according to error amount whether in the allowed band of setting, confirm whether microphone array uniformity is qualified.
2. detection method as claimed in claim 1, it is characterised in that the step (2), is FFT by the audio file and turns
Change, obtain the audio frequency parameter of each microphone.
3. detection method as claimed in claim 2, it is characterised in that the audio frequency parameter includes amplitude, frequency, phase ginseng
One or more of number, harmonic wave.
4. the detection method as described in any in claim 1-3, it is characterised in that the knot of the microphone array uniformity
Fruit, qualification is displayed whether by LED light in different colors.
5. a kind of electronic equipment microphone array consistency detection device, is built in electronic equipment, with the wheat on electronic equipment
Gram wind array, which coordinates, to be implemented, it is characterised in that source of sound be located at the center of the microphone array, which includes storing
Device, processor and storage on a memory and the computer program that can run on a processor, the processor execution journey
Following steps are realized during sequence：
(1) each microphone corresponding channel audio file of microphone array when collection is recorded at the same time；
(2) audio frequency parameter of extraction microphone is changed from audio file；
(3) the corresponding channel audio parameter of each microphone is contrasted with mean square deviation, draws error amount；
(4) according to error amount whether in the allowed band of setting, confirm whether microphone array uniformity is qualified.
6. detection device as claimed in claim 5, it is characterised in that the step (2), is FFT by the audio file and turns
Change, obtain the audio frequency parameter of each microphone.
7. detection device as claimed in claim 6, it is characterised in that the audio frequency parameter includes amplitude, frequency, phase ginseng
One or more of number, harmonic wave.
8. the detection device as described in any in claim 5-7, it is characterised in that LED light is further included, for display
The microphone array uniformity as a result, wherein, qualification is displayed whether in different colors by LED light.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711016983.8A CN107948900A (en) | 2017-10-26 | 2017-10-26 | A kind of electronic equipment microphone array consistency detecting method and its device |
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| CN201711016983.8A CN107948900A (en) | 2017-10-26 | 2017-10-26 | A kind of electronic equipment microphone array consistency detecting method and its device |
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| CN201711016983.8A Pending CN107948900A (en) | 2017-10-26 | 2017-10-26 | A kind of electronic equipment microphone array consistency detecting method and its device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121035A (en) * | 2018-08-30 | 2019-01-01 | 歌尔科技有限公司 | Earphone abnormality eliminating method, earphone, system and storage medium |
| CN109275084A (en) * | 2018-09-12 | 2019-01-25 | 北京小米智能科技有限公司 | Test method, device, system, equipment and the storage medium of microphone array |
| CN110390954A (en) * | 2019-08-06 | 2019-10-29 | 京东方科技集团股份有限公司 | Method and device for evaluating quality of voice product |
| CN110636432A (en) * | 2019-09-29 | 2019-12-31 | 深圳市火乐科技发展有限公司 | Microphone testing method and related equipment |
| CN110648685A (en) * | 2019-09-26 | 2020-01-03 | 百度在线网络技术（北京）有限公司 | Device detection method and device, electronic device and readable storage medium |
| CN110769358A (en) * | 2019-09-25 | 2020-02-07 | 云知声智能科技股份有限公司 | Microphone monitoring method and device |
| CN110891236A (en) * | 2018-09-09 | 2020-03-17 | 广东思派康电子科技有限公司 | Method and device for realizing production test of multi-microphone array |
| CN110996244A (en) * | 2019-12-23 | 2020-04-10 | 四川虹美智能科技有限公司 | Microphone array performance test method, device and system |
| CN111050268A (en) * | 2020-01-16 | 2020-04-21 | 苏州思必驰信息科技有限公司 | Phase testing system, method, device, equipment and medium of microphone array |
| CN112071332A (en) * | 2019-06-11 | 2020-12-11 | 阿里巴巴集团控股有限公司 | Method and device for determining pickup quality |
| CN112393799A (en) * | 2019-08-16 | 2021-02-23 | 青岛海尔多媒体有限公司 | Far-field voice equipment detection method and device and television terminal |
| CN114222234A (en) * | 2021-12-31 | 2022-03-22 | 思必驰科技股份有限公司 | Microphone array consistency detection method, electronic device and storage medium |
| CN114339572A (en) * | 2021-12-15 | 2022-04-12 | 上海深聪半导体有限责任公司 | Microphone array production and measurement method |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11638083B2 (en) | 2018-08-30 | 2023-04-25 | Goertek Inc. | Earphone abnormality processing method, earphone, system, and storage medium |
| CN109121035A (en) * | 2018-08-30 | 2019-01-01 | 歌尔科技有限公司 | Earphone abnormality eliminating method, earphone, system and storage medium |
| CN109121035B (en) * | 2018-08-30 | 2020-10-09 | 歌尔科技有限公司 | Earphone exception handling method, earphone, system and storage medium |
| CN110891236A (en) * | 2018-09-09 | 2020-03-17 | 广东思派康电子科技有限公司 | Method and device for realizing production test of multi-microphone array |
| CN109275084A (en) * | 2018-09-12 | 2019-01-25 | 北京小米智能科技有限公司 | Test method, device, system, equipment and the storage medium of microphone array |
| CN112071332A (en) * | 2019-06-11 | 2020-12-11 | 阿里巴巴集团控股有限公司 | Method and device for determining pickup quality |
| CN110390954A (en) * | 2019-08-06 | 2019-10-29 | 京东方科技集团股份有限公司 | Method and device for evaluating quality of voice product |
| CN112393799A (en) * | 2019-08-16 | 2021-02-23 | 青岛海尔多媒体有限公司 | Far-field voice equipment detection method and device and television terminal |
| CN110769358A (en) * | 2019-09-25 | 2020-02-07 | 云知声智能科技股份有限公司 | Microphone monitoring method and device |
| CN110648685A (en) * | 2019-09-26 | 2020-01-03 | 百度在线网络技术（北京）有限公司 | Device detection method and device, electronic device and readable storage medium |
| CN110636432A (en) * | 2019-09-29 | 2019-12-31 | 深圳市火乐科技发展有限公司 | Microphone testing method and related equipment |
| CN110996244B (en) * | 2019-12-23 | 2021-08-03 | 四川虹美智能科技有限公司 | Microphone array performance test method, device and system |
| CN110996244A (en) * | 2019-12-23 | 2020-04-10 | 四川虹美智能科技有限公司 | Microphone array performance test method, device and system |
| CN111050268A (en) * | 2020-01-16 | 2020-04-21 | 苏州思必驰信息科技有限公司 | Phase testing system, method, device, equipment and medium of microphone array |
| CN111050268B (en) * | 2020-01-16 | 2021-11-16 | 思必驰科技股份有限公司 | Phase testing system, method, device, equipment and medium of microphone array |
| CN114339572A (en) * | 2021-12-15 | 2022-04-12 | 上海深聪半导体有限责任公司 | Microphone array production and measurement method |
| CN114222234A (en) * | 2021-12-31 | 2022-03-22 | 思必驰科技股份有限公司 | Microphone array consistency detection method, electronic device and storage medium |
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