CN106231492A - A kind of MEMS microphone identification system and method - Google Patents
A kind of MEMS microphone identification system and method Download PDFInfo
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- CN106231492A CN106231492A CN201610641794.9A CN201610641794A CN106231492A CN 106231492 A CN106231492 A CN 106231492A CN 201610641794 A CN201610641794 A CN 201610641794A CN 106231492 A CN106231492 A CN 106231492A
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- mems microphone
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000003044 adaptive effect Effects 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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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
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The present invention relates to MEMS microphone, particularly relate to the identification system and method for a kind of MEMS microphone.The present invention is by encoding digital signals, and output encodes signal, thus coding signal can be decoded by PCM decoder, goes back the signal of original encoding, thus obtains the information relevant with mike.
Description
Technical field
The present invention relates to MEMS microphone, particularly relate to the identification system and method for a kind of MEMS microphone.
Background technology
The digital signal of existing mike output is typically exported by the PDM interface of the equipment such as analog-digital converter, but
Do not carry out the coding of the information such as address in existing digital signal, then system cannot be to the address information identified in this signal
Deng numeral, it has not been convenient to the user couple information relevant with microphone apparatus is understood.
Summary of the invention
The problem existed for prior art, now provides the identification system and method for a kind of MEMS microphone.
Concrete technical scheme is as follows:
A kind of MEMS microphone identification system, including:
Sound transducer, in order to sense sound, exports an acoustical signal；
AD sample circuit, is connected with described sound transducer, in order to sample described acoustical signal, exports sampled signal；
Pcm encoder equipment, is connected with described AD sample circuit, in order to described sampled signal to be carried out pcm encoder, and output coding letter
Number；
PCM decoding device, is connected with described pcm encoder equipment, in order to described coding signal is decoded, and output decoding letter
Number.
Preferably, described coding signal includes the address of described MEMS microphone.
Preferably, the address of described MEMS microphone is circulation address.
Preferably, the address of described MEMS microphone is adaptive with the version of described MEMS microphone.
Preferably, described pcm encoder equipment having pcm interface, wherein said pcm interface exports described coding signal.
A kind of recognition methods of MEMS microphone, including:
Step S1, senses sound, exports an acoustical signal；
Step S2, samples to described acoustical signal, exports sampled signal；
Step S3, carries out pcm encoder, output coding signal to described sampled signal；
Step S4, is decoded described coding signal, output decoding signal.
Preferably, described coding signal includes the address of described MEMS microphone.
Preferably, the address of described MEMS microphone is circulation address.
Preferably, the address of described MEMS microphone is adaptive with the version of described MEMS microphone.
Preferably, the address of described MEMS microphone is preposition sequence code.
Technique scheme provides the benefit that:
Technique scheme is by encoding digital signals, and output encodes signal, thus PCM decoder can coding letter
Number it is decoded, goes back the signal of original encoding, thus obtain the information relevant with mike.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the identification system of a kind of MEMS microphone of the present invention；
Fig. 2 is the flow chart of the embodiment of the recognition methods of a kind of MEMS microphone of the present invention.
Detailed description of the invention
It should be noted that in the case of not conflicting, following technical proposals, can be mutually combined between technical characteristic.
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is further described:
A kind of MEMS microphone identification system, as it is shown in figure 1, include:
Sound transducer, in order to sense sound, exports an acoustical signal；
AD sample circuit, is connected with sound transducer, in order to sample acoustical signal, exports sampled signal；
Pcm encoder equipment, is connected with AD sample circuit, in order to sampled signal to be carried out pcm encoder, and output coding signal；
PCM decoding device, is connected with pcm encoder equipment, in order to coding signal is decoded, and output decoding signal.
In the present embodiment, PCM coding i.e. PCM pulse code modulation, is the abbreviation of Pulse Code Modulation.Arteries and veins
Rushing one of the coded system that coded modulation is digital communication, the present embodiment is applied to MEMS microphone field, and pcm encoder sets
Coding information is transmitted by serial communication mode for PCM decoding device.Pcm encoder main process is by the mould such as speech, image
Intend signal to be sampled at regular intervals so that it is discretization, sample value pressed layered units round simultaneously and quantifies,
Sample value is represented by one group of binary code the amplitude of sampling pulse simultaneously.
Sampled signal after quantization only has limited desirable sample value, and the positive and negative width of signal in certain span
The symmetry of degree distribution makes the number of positive and negative sample value equal, positive and negative to quantized level symmetrical.If quantifying sample by limited
The absolute value of value is arranged in order from small to large, and gives a decimal number word code (such as, imparting sample value 0 the most successively
Decimal number word code be 0), before code with "+", "-" number as prefix, distinguish the positive and negative of sample value, then taking out after quantifying
Sample signal translates into a string ten's digit code stream by sampling sequential arrangement, i.e. ten's digit signal.Simple efficient
Data system is binary code system, therefore, decimal number word code should be transformed into binary coding.According to ten's digit
Total number of code, it may be determined that required binary-coded figure place, i.e. word length.This quantify sampled signal be transformed into
The process of the binary code stream determining word length is referred to as coding.
The relevant information of MEMS microphone can be compiled by the pcm encoder in the present embodiment, when decoding by information
Carry out reducing the information of the MEMS microphone that i.e. may recognize that compiling.
In one preferred embodiment of the present invention, coding signal includes the address of MEMS microphone.
In one preferred embodiment of the present invention, the address of MEMS microphone is circulation address.
In one preferred embodiment of the present invention, the address of MEMS microphone is adaptive with the version of MEMS microphone.
In one preferred embodiment of the present invention, pcm encoder equipment has pcm interface, wherein pcm interface output coding
Signal.
A kind of recognition methods of MEMS microphone, as in figure 2 it is shown, include:
Step S1, senses sound, exports an acoustical signal；
Step S2, samples to acoustical signal, exports sampled signal；
Step S3, carries out pcm encoder, output coding signal to sampled signal；
Step S4, is decoded coding signal, output decoding signal.
In one preferred embodiment of the present invention, coding signal includes the address of MEMS microphone.
In one preferred embodiment of the present invention, the address of MEMS microphone is circulation address.
In one preferred embodiment of the present invention, the address of MEMS microphone is adaptive with the version of MEMS microphone.
In one preferred embodiment of the present invention, the address of MEMS microphone is preposition sequence code.
In above-described embodiment, digital signal, carrying out analog digital conversion when, has been carried out preposition sequence by pcm encoder equipment
Code, had i.e. carried out stamp before digital signal, and the process of this stamp can be in the way of using existing pcm encoder, such as
The coding signal of stamp is 01,011,001 01010, and wherein, 01011001 is the stamp before digital signaling zero 1010, and this is preposition
Sequence code can be adaptive with the version of MEMS microphone, and this preposition sequence code can repeat, and such as it can be
0101100101011001, this is above-mentioned circulation address, and the pcm encoder technology in the present embodiment can use the neck that nowadays communicates
Pcm encoder technology in territory, is applied to MEMS microphone field by this technology, facilitates user's relevant information to MEMS microphone
It is identified, understanding etc..
To sum up, technique scheme is by encoding digital signals, output coding signal, thus PCM decoder energy
Enough coding signal is decoded, goes back the signal of original encoding, thus obtain the information relevant with mike.
By explanation and accompanying drawing, give the exemplary embodiments of the ad hoc structure of detailed description of the invention, based on present invention essence
God, also can make other conversion.Although foregoing invention proposes existing preferred embodiment, but, these contents are not intended as
Limitation.
For a person skilled in the art, after reading described above, various changes and modifications will be apparent to undoubtedly.
Therefore, appending claims should regard whole variations and modifications of true intention and the scope containing the present invention as.In power
The scope of any and all equivalence and content in the range of profit claim, be all considered as still belonging to the intent and scope of the invention.
Claims (10)
1. a MEMS microphone identification system, it is characterised in that including:
Sound transducer, in order to sense sound, exports an acoustical signal；
AD sample circuit, is connected with described sound transducer, in order to sample described acoustical signal, exports sampled signal；
Pcm encoder equipment, is connected with described AD sample circuit, in order to described sampled signal to be carried out pcm encoder, and output coding letter
Number；
PCM decoding device, is connected with described pcm encoder equipment, in order to described coding signal is decoded, and output decoding letter
Number.
MEMS microphone identification system the most according to claim 1, it is characterised in that described coding signal includes described
The address of MEMS microphone.
MEMS microphone identification system the most according to claim 2, it is characterised in that the address of described MEMS microphone is
Circulation address.
MEMS microphone identification system the most according to claim 2, it is characterised in that the address of described MEMS microphone with
The version of described MEMS microphone is adaptive.
MEMS microphone identification system the most according to claim 1, it is characterised in that have on described pcm encoder equipment
Pcm interface, wherein said pcm interface exports described coding signal.
6. the recognition methods of a MEMS microphone, it is characterised in that including:
Step S1, senses sound, exports an acoustical signal；
Step S2, samples to described acoustical signal, exports sampled signal；
Step S3, carries out pcm encoder, output coding signal to described sampled signal；
Step S4, is decoded described coding signal, output decoding signal.
The recognition methods of MEMS microphone the most according to claim 6, it is characterised in that described coding signal includes institute
State the address of MEMS microphone.
MEMS microphone recognition methods the most according to claim 7, it is characterised in that the address of described MEMS microphone is
Circulation address.
MEMS microphone recognition methods the most according to claim 7, it is characterised in that the address of described MEMS microphone with
The version of described MEMS microphone is adaptive.
MEMS microphone the most according to claim 7 knows method, it is characterised in that the address of described MEMS microphone is
Preposition sequence code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610641794.9A CN106231492A (en) | 2016-08-08 | 2016-08-08 | A kind of MEMS microphone identification system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610641794.9A CN106231492A (en) | 2016-08-08 | 2016-08-08 | A kind of MEMS microphone identification system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113905308A (en) * | 2021-08-05 | 2022-01-07 | 钰太芯微电子科技（上海）有限公司 | Online trimming MEMS microphone and electronic equipment |
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| CN103888583A (en) * | 2012-12-06 | 2014-06-25 | 联美新视信息科技（上海）有限公司 | Mobile terminal and television accompanying sound input method |
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| CN206294331U (en) * | 2016-08-08 | 2017-06-30 | 钰太芯微电子科技（上海）有限公司 | A kind of MEMS microphone identifying system |
-
2016
- 2016-08-08 CN CN201610641794.9A patent/CN106231492A/en active Pending
Patent Citations (8)
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| JP2005012499A (en) * | 2003-06-19 | 2005-01-13 | Matsushita Electric Ind Co Ltd | Method and device for reproducing data |
| CN101175101A (en) * | 2006-11-02 | 2008-05-07 | 联想移动通信科技有限公司 | Sound processing method and device for mobile phone microphone |
| CN103888583A (en) * | 2012-12-06 | 2014-06-25 | 联美新视信息科技（上海）有限公司 | Mobile terminal and television accompanying sound input method |
| US20140372110A1 (en) * | 2013-02-15 | 2014-12-18 | Max Sound Corporation | Voic call enhancement |
| CN104038864A (en) * | 2013-03-08 | 2014-09-10 | 亚德诺半导体股份有限公司 | Microphone Circuit Assembly And System With Speech Recognition |
| CN104936114A (en) * | 2015-05-29 | 2015-09-23 | 北京卓锐微技术有限公司 | Microphone with unique identification code |
| CN105262609A (en) * | 2015-09-02 | 2016-01-20 | 南京奇幻通信科技有限公司 | MATLAB (Matrix Laboratory)-based PCM (Pulse Code Modulation) communication system simulation method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113905308A (en) * | 2021-08-05 | 2022-01-07 | 钰太芯微电子科技（上海）有限公司 | Online trimming MEMS microphone and electronic equipment |
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