CN106792415B - A kind of test method and device for digital microphone array - Google Patents
A kind of test method and device for digital microphone array Download PDFInfo
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- CN106792415B CN106792415B CN201611220042.1A CN201611220042A CN106792415B CN 106792415 B CN106792415 B CN 106792415B CN 201611220042 A CN201611220042 A CN 201611220042A CN 106792415 B CN106792415 B CN 106792415B
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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
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
Abstract
The invention discloses a kind of test method and device for digital microphone array, which includes: the pickup hole for any microphone blocked in a pair of of microphone；Audio digital signals are handled according to clock signal to obtain two-way analog voice signal, respectively as the first microphone signal and second microphone signal；Calculate the voltage difference between the first microphone signal and second microphone signal；Judge whether digital microphone array is normal according to voltage difference.Test method through the invention, without the Underwater Acoustic channels by high cost and complexity, but pass through test electric signal, to judge whether digital microphone array is normal, it can be effectively reduced the testing cost of digital microphone array by the test method, the ex factory pass rate for improving digital microphone array is avoided when digital microphone array group is tested in complete machine, and digital microphone array will lead to the problem of complete machine is scrapped extremely.
Description
Technical field
The present invention relates to digital microphone array test technical fields, more particularly it relates to a kind of for number
The test method and device of microphone array.
Background technique
Many high-end call bluetooth headsets, speaker, intelligent robot either mobile phone now usually can all use majority
Word microphone array improves speech quality to reduce ambient noise.For flexible and accurate, the digital microphone array of pickup
It can be placed on an individual circuit board, be then connected by connecting line with main circuit.This digital microphone array circuit,
It would generally be detected by the processing of parameters,acoustic and judge whether exception, but because in digital microphone array between microphone
Distance it is very close, need the technicality of the amplitude and phase that acquire voice signal by different location microphone to distinguish each
Whether microphone is normal, and this test mode algorithm is complicated, and the cost of test equipment is very high, some digital microphone arrays
Because testing cost is high, it can select directly to be tested in the assembled complete machine stage, but if detect digital wheat at this time
Gram wind battle array is abnormal, it will causes scrapping for complete machine.
Summary of the invention
It is an object of the present invention to provide a kind of new technical solutions for being able to solve one of above problem.
According to the first aspect of the invention, a kind of test method for digital microphone array, the number are provided
Microphone array includes the microphone of at least a pair of of common clock line and data line, and the test method includes:
Block the pickup hole of any microphone in the pair of microphone；
Clock signal is exported to the clock line；
It receives the pair of microphone acquisition source of sound and obtains audio digital signals, wherein the audio digital signals are through institute
State data line output；
The audio digital signals are handled according to the clock signal to obtain two-way analog voice signal, are made respectively
For the first microphone signal and second microphone signal；
Calculate the voltage difference between first microphone signal and the second microphone signal；
Judge whether the digital microphone array is normal according to the voltage difference.
Optionally, the voltage difference packet calculated between first microphone signal and the second microphone signal
It includes:
The virtual value of first microphone signal is calculated as the first virtual value, calculates the second microphone signal
Virtual value is as the second virtual value；
The difference for calculating first virtual value and second virtual value, as the voltage difference.
Optionally, it is described according to the voltage difference judge the digital microphone array whether normally include:
Judge whether the voltage difference is zero, if so, then determining that the digital microphone array is abnormal；If not, determining
The digital microphone array is normal.
Optionally, described that the audio digital signals are handled according to the clock signal to obtain two-way simulation language
Sound signal includes: respectively as the first microphone signal and second microphone signal
The audio digital signals are divided into the first audio digital signals and the second digital language according to the clock signal
Sound signal；
Processing is decoded to first audio digital signals and obtains first microphone signal, to second number
Word voice signal is decoded processing and obtains the second microphone signal.
Optionally, it is described judge whether the digital microphone array normal according to the voltage difference after further include:
If the digital microphone array is abnormal, sound an alarm to prompt tester.
According to the second aspect of the invention, a kind of test device for digital microphone array, the number are provided
Microphone array includes the microphone of at least a pair of of common clock line and data line, and the test device includes:
Stifled pickup hole module, the pickup hole of any microphone for blocking in the pair of microphone；
Clock signal output module, for exporting clock signal to the clock line；
Signal receiving module obtains audio digital signals for receiving the pair of microphone acquisition source of sound, wherein described
Audio digital signals are exported through the data line；
Processing module obtains two-way simulation language for being handled according to the clock signal the audio digital signals
Sound signal, respectively as the first microphone signal and second microphone signal；
Computing module, for calculating the voltage difference between first microphone signal and the second microphone signal；
Judgment module, for judging whether the digital microphone array is normal according to the voltage difference.
Optionally, the computing module includes:
Virtual value computing unit, the virtual value for calculating first microphone signal are calculated as the first virtual value
The virtual value of the second microphone signal is as the second virtual value；
Voltage difference computing unit, for calculating the difference of first virtual value and second virtual value, as the electricity
Pressure difference.
Optionally, the judgment module is also used to judge whether the voltage difference is zero, if so, then determining the number
Microphone array is abnormal；If not, determining that the digital microphone array is normal.
Optionally, the processing module includes:
Discrimination unit, for the audio digital signals to be divided into the first audio digital signals according to the clock signal
With the second audio digital signals；
Decoding unit obtains the first Mike wind for being decoded processing to first audio digital signals
Number, processing is decoded to second audio digital signals and obtains the second microphone signal.
Optionally, the test device further include:
Alarm module, for sounding an alarm to prompt to test in the case where the judging result of the judgment module is no
Personnel.
It was found by the inventors of the present invention that in the prior art, there are the higher problems of microphone array testing cost.Cause
This, the technical assignment to be realized of the invention or never expect the technical problem to be solved is that those skilled in the art or
Person it is not expected that, therefore the present invention is a kind of new technical solution.
A beneficial effect of the invention is, test method through the invention, without by high cost and complexity
Underwater Acoustic channels, but can by the test method to judge whether digital microphone array normal by test electric signal
The testing cost of digital microphone array is effectively reduced, improves the ex factory pass rate of digital microphone array, avoids in number
Microphone array is assembled in when being tested in complete machine, and digital microphone array will lead to the problem of complete machine is scrapped extremely.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is a kind of circuit diagram of implementation structure of existing digital microphone array；
Fig. 2 is a kind of process of a kind of embodiment of the test method for digital microphone array according to the present invention
Figure；
Fig. 3 is a kind of process of another implementation method of the test method for digital microphone array according to the present invention
Figure；
Fig. 4 is a kind of square frame principle of a kind of implementation structure for digital microphone array detecting device according to the present invention
Figure；
Fig. 5 is that a kind of another box for implementing structure for digital microphone array detecting device is former according to the present invention
Reason figure.
Description of symbols:
MIC1, MIC2, MIC3, MIC4- microphone；GND- ground terminal；
VCC- power end；DATA1, DATA2- data line；
CLOCK1, CLOCK2- clock line；
The power pins of VDD1, VDD2, VDD3, VDD4- microphone；
The grounding pin of GND1, GND2, GND3, GND4- microphone；
The left and right acoustic channels of L/R1, L/R2, L/R3, L/R4- microphone select pin；
The clock pins of CLK1, CLK2, CLK3, CLK4- microphone；
The data pin of D1, D2, D3, D4- microphone.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Existing microphone array is usually to be made of digital microphone, i.e. digital microphone array.Digital microphone
Array includes the microphone of at least a pair of of common clock line and data line, the circuit knot of the microphone array of two pairs of microphones composition
Structure is usually as shown in Figure 1, microphone MIC1, MIC2 are a pair, the left and right acoustic channels selection pin L/R1 and power supply of microphone MIC1
VCC connection is held, the left and right acoustic channels selection pin L/R2 of microphone MIC2 is connect with ground terminal GND, and the clock of microphone MIC1 draws
The clock pins CLK2 of foot CLK1 and microphone MIC2 is connected to clock line CLOCK1, the data pin D1 of microphone MIC1 and
The data pin D2 of microphone MIC2 is connected to data line DATA1, in this way, as microphone MIC1 and microphone MIC2 is shared
Clock line CLOCK1 and data line DATA1.Likewise, microphone MIC3 and microphone MIC4 is a pair of of common clock line CLOCK2
With the microphone of data line DATA2, the connection type of microphone MIC3 and microphone MIC4 and the connection of microphone MIC1, MIC2
Mode is identical.
In order to solve the amplitude by detecting different microphones acquisition voice signals and phase existing in the prior art
Technicality distinguishes whether each microphone is normal, and this test mode has algorithm complicated and the cost of test equipment is very high
The problem of, provide a kind of test method for digital microphone array.
Test method of the invention carries out test with a pair of of the microphone constituted to microphone MIC1 and microphone MIC2
Example is illustrated.
Fig. 2 is according to a kind of a kind of process of embodiment of the test method for digital microphone array of the present invention
Figure.
According to Fig.2, which includes:
Step S210 blocks the pickup hole of any microphone in a pair of of microphone.
Specifically, the pickup hole of microphone MIC2 can be for example blocked, then, microphone MIC2 cannot acquire source of sound and broadcast
The tested speech put.
Step S220 exports clock signal to the clock line of microphone array.
Clock signal is the basis of sequential logic, when is updated for the state in decision logic unit, is to have fixed week
Phase and the semaphore unrelated with operation.Clock signal has fixed clock frequency, and clock frequency is the inverse of clock cycle.In electricity
The synchronous digital circuit of son and especially signal, clock signal are the high and low shapes between a kind of distinctive signal oscillation of signal
State, the digital circuit that the utilization of signal is coordinated actions as a metronome, dagital clock signal is substantially square-wave voltage.It has
Level there are two only, first is that low level, the other is high level.The duty ratio of the most common clock signal is 50%, that is,
It says, as high level and low level duration be, the form of usually one fixed constant frequency square wave.
Therefore, in one particular embodiment of the present invention, which can be the square wave letter that duty ratio is 50%
Number.
Further, the sequence of step S210 and step S220 can exchange.
Step S230 receives the audio digital signals that a pair of of microphone acquisition source of sound obtains.
Wherein, which exported through data line；The frequency that source of sound for example can be speaker broadcasting is single
And be the sine wave signal of fixed value, the test method can be simplified in this way, be convenient for subsequent calculating.
Since the left and right acoustic channels selection pin L/R1 of microphone MIC1 is connect with power end VCC, the left and right of microphone MIC2
Track selecting pin L/R2 is connect with ground terminal GND, and therefore, microphone MIC1 is triggered in the rising edge of clock signal, clock letter
Number between high period, the data pin D1 of microphone MIC1 exports valid data, and clock signal is between low period, microphone
The data pin D1 of MIC1 is high-impedance state；Microphone MIC2 is triggered in the failing edge of clock signal, and clock signal is low period
Between, the data pin D2 of microphone MIC2 exports valid data, and clock signal between high period, draw by the data of microphone MIC2
Foot D2 is high-impedance state.
High-impedance state is a kind of output state of circuit, it is neither high level is also not low level, if high-impedance state is defeated again
It if entering next stage circuit, has no effect to junior's circuit, as not connecing, high-impedance state can do open circuit reason when circuit analysis
Solution.
In the normal situation of microphone MIC1 and microphone MIC2, when clock signal is high level, data line
What is transmitted on DATA1 is the valid data of microphone MIC1 output；When clock signal is low level, data line DATA1 is uploaded
Defeated is the valid data of microphone MIC2 output.
Further, since the pickup hole of microphone MIC2 is plugged, source of sound can not be acquired, therefore the first digital speech is believed
Number and the second audio digital signals should be different, such as the second audio digital signals can be lasting low level signal,
And the first audio digital signals then can be the digital signal that can be sine wave through digital-to-analogue conversion.
Step S240 handles the audio digital signals according to clock signal to obtain two-way analog voice signal, point
It Zuo Wei not the first microphone signal and second microphone signal.
Specifically, as shown in figure 3, step S240 may include:
Audio digital signals are divided into the first audio digital signals and the second digital language according to clock signal by step S241
Sound signal.
Specifically, using clock signal be high level when audio digital signals as the first audio digital signals, by clock
Audio digital signals when signal is low level are as the second audio digital signals.
In the normal situation of microphone MIC1 and microphone MIC2, due to clock signal be high level when, first
Audio digital signals are the valid data of microphone MIC1 output；When clock signal is low level, the second audio digital signals
For the valid data of microphone MIC2 output, therefore, the first audio digital signals and the second audio digital signals are different.
Microphone MIC1 is normal, microphone MIC2 exception in the case where, for clock signal for high period between, first is digital
Voice signal is the valid data of microphone MIC1 output；In clock signal between low period, the second audio digital signals are answered
This is valid data of microphone MIC2 output, but because microphone MIC2 is abnormal, data pin D2 exports high-impedance state, when
When clock signal is low level, the second digital signal is not the valid data exported by microphone MIC2, and is still microphone
The valid data of MIC1 output, so that the first audio digital signals and the second audio digital signals are identical.
In microphone MIC1 exception, the normal situation of microphone MIC2, clock signal is between low period, the second number
Voice signal is the valid data of microphone MIC2 output；In clock signal between high period, the first audio digital signals are answered
This is valid data of microphone MIC1 output, but because microphone MIC1 is abnormal, data pin D1 exports high-impedance state, when
When clock signal is high level, the first digital signal is not the valid data exported by microphone MIC1, and is still microphone
The valid data of MIC2 output, so that the first audio digital signals and the second audio digital signals are identical.
When microphone MIC1 and microphone MIC2 are abnormal, the first audio digital signals are exported by microphone MIC1
Valid data, the second audio digital signals are also not the valid data exported by microphone MIC2, and the first digital speech is believed
It is number identical with the second audio digital signals.
Step S242 is decoded processing to the first audio digital signals and obtains the first microphone signal, to the second number
Voice signal is decoded processing and obtains second microphone signal.
Specifically, decoding process includes digital-to-analogue conversion processing, i.e., analog-to-digital conversion is carried out to the first audio digital signals and obtained
First microphone signal of simulation carries out the second microphone signal that analog-to-digital conversion is simulated to the second audio digital signals.
Step S250 calculates the voltage difference between the first microphone signal and second microphone signal.
Further, step S250 may include:
Step S251 calculates the virtual value of the first microphone signal as the first virtual value, calculates second microphone signal
Virtual value as the second virtual value.
Source of sound is the single and fixed sine wave signal of frequency, in the situation that microphone MIC1 and microphone MIC2 are normal
Under, the first microphone signal is also the single and fixed sine wave signal of frequency, and the first virtual value of sine wave signal is equal to most
Big value divided byAnd first virtual value be not 0, therefore, can quickly calculate the size of the first virtual value；Second microphone
Signal maximum and virtual value can be 0.
Microphone MIC1 is normal, microphone MIC2 exception in the case where, the first microphone signal and second microphone letter
It number is the single and fixed sine wave signal of frequency, the first virtual value and the second virtual value are equal and be not 0.In microphone
In MIC1 exception, the normal situation of microphone MIC2, the first virtual value and the second virtual value are 0.In microphone MIC1 and wheat
In the case where gram wind MIC2 exception, the first virtual value and the second virtual value are equal.
Step S252 calculates the difference of the first virtual value and the second virtual value, as voltage difference.
Specifically, due to only in the normal situation of microphone MIC1 and microphone MIC, the first virtual value and second
Virtual value is just unequal, in the case where microphone MIC1 and/or microphone MIC2 exception, the first virtual value and the second virtual value
It is equal, therefore, according to the difference of the first virtual value and the second virtual value it may determine that whether microphone array is normal.
It is further possible to be the direct difference calculated between the first microphone signal and second microphone signal as electricity
Pressure difference can also be the difference between the first microphone signal maximum value of calculating and second microphone signal maximum value as voltage
Difference.
Step S260 judges whether digital microphone array is normal according to the voltage difference.
Judge whether voltage difference is zero specifically, can be, if so, then determining that digital microphone array is abnormal；If not,
Determine that digital microphone array is normal.
Further, according to Fig.3, the test method is after executing the step S260 further include:
Step S310 is sounded an alarm if digital microphone array is abnormal to prompt tester.
In such manner, it is possible to remind the test case of tester's digital microphone array in time, avoid tester accidentally will be different
Normal digital microphone array is attributed in the classification of normal digital microphone array, and the factory for improving digital microphone array is qualified
Rate.
Test method through the invention without the Underwater Acoustic channels by high cost and complexity, but passes through test electricity
Signal can be effectively reduced digital microphone array by the test method to judge whether digital microphone array is normal
Testing cost improves the ex factory pass rate of digital microphone array, avoids enterprising mounted in complete machine in digital microphone array group
When row test, digital microphone array will lead to the problem of complete machine is scrapped extremely.
In the case where digital microphone array includes multipair microphone, test method is consistent with the above, i.e., right respectively
Every a pair of microphone carries out above-mentioned test, and the test of each pair of microphone can carry out simultaneously, whether to judge each pair of microphone
Normally, when any microphone exception, then determine that the digital microphone array is abnormal.
Corresponding with above-mentioned test method, the present invention also provides a kind of test dresses for digital microphone array
It sets.
Fig. 4 is former according to a kind of a kind of box of implementation structure of the test device for digital microphone array of the present invention
Reason figure.
According to Fig.4, which includes stifled pickup hole module 410, clock signal output module 420, signal
Receiving module 430, processing module 440, computing module 450 and judgment module 460.
The pickup hole for any microphone that above-mentioned stifled pickup hole module 410 is used to block in a pair of of microphone；
Above-mentioned clock signal output module 420 is used to export clock signal to clock line；
Above-mentioned signal receiving module 430 obtains audio digital signals for receiving a pair of of microphone acquisition source of sound, wherein number
Word voice signal is exported through data line；
Above-mentioned processing module 440 is for handling audio digital signals according to clock signal to obtain two-way analog voice
Signal, respectively as the first microphone signal and second microphone signal；
Above-mentioned computing module 450 is used to calculate the voltage difference between the first microphone signal and second microphone signal；
Above-mentioned judgment module 460 is used to judge whether digital microphone array is normal according to voltage difference.
Fig. 5 is another box for implementing structure according to a kind of test device for digital microphone array of the present invention
Schematic diagram.
According to Fig.5, computing module 450 includes virtual value computing unit 451 and voltage difference computing unit 452, this has
Valid value computing unit 451 is used to calculate the virtual value of the first microphone signal as the first virtual value, calculates second microphone letter
Number virtual value as the second virtual value；The voltage difference computing unit 452 is used to calculate the first virtual value and the second virtual value
Difference, as voltage difference.
Specifically, judgment module 460 is also used to judge whether voltage difference is zero, if so, then determining digital microphone array
It is abnormal；If not, determining that digital microphone array is normal.
Further, processing module 440 includes discrimination unit 441 and decoding unit 442, which is used for root
Audio digital signals are divided into the first audio digital signals and the second audio digital signals according to clock signal；The decoding unit
442 obtain the first microphone signal for being decoded processing to the first audio digital signals, to the second audio digital signals into
Row decoding process obtains second microphone signal.
On this basis, which further includes alarm module 510, for the judging result in judgment module 460
In the case where no, sound an alarm to prompt tester.
The difference of the various embodiments described above primary focus description and other embodiments, but those skilled in the art should be clear
Chu, the various embodiments described above can according to need exclusive use or are combined with each other.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of test method for digital microphone array, which is characterized in that the digital microphone array includes at least
The microphone of a pair of of common clock line and data line, the test method include:
Block the pickup hole of any microphone in the pair of microphone；
Clock signal is exported to the clock line；In the normal situation of the pair of microphone, if the clock signal
For high level, what is transmitted on corresponding data line is the valid data of first microphone output in the pair of microphone；
If the clock signal is low level, what is transmitted on corresponding data line is second microphone in the pair of microphone
The valid data of output；It is corresponding if the clock signal is high level in the case where first microphone exception
What is transmitted on data line is the valid data of second microphone output；In the situation of second microphone exception
Under, if the clock signal is low level, that transmit on corresponding data line is the effective of first microphone output
Data；
It receives the pair of microphone acquisition source of sound and obtains audio digital signals, wherein the audio digital signals are through the number
It is exported according to line；
The audio digital signals are handled according to the clock signal to obtain two-way analog voice signal, respectively as
One microphone signal and second microphone signal；
Calculate the voltage difference between first microphone signal and the second microphone signal；
Judge whether the digital microphone array is normal according to the voltage difference.
2. test method according to claim 1, which is characterized in that first microphone signal and described of calculating
Voltage difference between second microphone signal includes:
The virtual value of first microphone signal is calculated as the first virtual value, calculates the effective of the second microphone signal
Value is used as the second virtual value；
The difference for calculating first virtual value and second virtual value, as the voltage difference.
3. test method according to claim 2, which is characterized in that described to judge the digital wheat according to the voltage difference
Gram wind array whether normally include:
Judge whether the voltage difference is zero, if so, then determining that the digital microphone array is abnormal；If not, described in determining
Digital microphone array is normal.
4. test method according to claim 1, which is characterized in that it is described according to the clock signal to the digital language
Sound signal is handled to obtain two-way analog voice signal, respectively as the first microphone signal and second microphone signal packet
It includes:
The audio digital signals are divided into the first audio digital signals according to the clock signal and the second digital speech is believed
Number；
Processing is decoded to first audio digital signals and obtains first microphone signal, to the described second digital language
Sound signal is decoded processing and obtains the second microphone signal.
5. test method according to claim 1, which is characterized in that described to judge the digital wheat according to the voltage difference
After whether gram wind array is normal further include:
If the digital microphone array is abnormal, sound an alarm to prompt tester.
6. a kind of test device for digital microphone array, which is characterized in that the digital microphone array includes at least
The microphone of a pair of of common clock line and data line, the test device include:
Stifled pickup hole module, the pickup hole of any microphone for blocking in the pair of microphone；
Clock signal output module, for exporting clock signal to the clock line；In the normal feelings of the pair of microphone
Under condition, if the clock signal is high level, that transmit on corresponding data line is first in the pair of microphone
The valid data of microphone output；If the clock signal is low level, what is transmitted on corresponding data line is the pair of
The valid data of second microphone output in microphone；In the case where first microphone exception, if described
Clock signal is high level, and what is transmitted on corresponding data line is the valid data of second microphone output；Described
In the case where second microphone exception, if the clock signal is low level, what is transmitted on corresponding data line is described
The valid data of first microphone output；
Signal receiving module obtains audio digital signals for receiving the pair of microphone acquisition source of sound, wherein the number
Voice signal is exported through the data line；
Processing module obtains two-way analog voice letter for being handled according to the clock signal the audio digital signals
Number, respectively as the first microphone signal and second microphone signal；
Computing module, for calculating the voltage difference between first microphone signal and the second microphone signal；
Judgment module, for judging whether the digital microphone array is normal according to the voltage difference.
7. test device according to claim 6, which is characterized in that the computing module includes:
Virtual value computing unit, for calculating the virtual value of first microphone signal as the first virtual value, described in calculating
The virtual value of second microphone signal is as the second virtual value；
Voltage difference computing unit, for calculating the difference of first virtual value and second virtual value, as the voltage difference.
8. test device according to claim 7, which is characterized in that the judgment module is also used to judge the voltage difference
It whether is zero, if so, then determining that the digital microphone array is abnormal；If not, determining that the digital microphone array is normal.
9. test device according to claim 6, which is characterized in that the processing module includes:
Discrimination unit, for the audio digital signals to be divided into the first audio digital signals and according to the clock signal
Two audio digital signals；
Decoding unit obtains first microphone signal for being decoded processing to first audio digital signals, right
Second audio digital signals are decoded processing and obtain the second microphone signal.
10. test device according to claim 6, which is characterized in that the test device further include:
Alarm module, for sounding an alarm to prompt tester in the case where the judging result of the judgment module is no.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| 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 |
| CN110072166B (en) * | 2019-03-21 | 2020-07-31 | 晶晨半导体(上海)股份有限公司 | Hardware debugging method of digital microphone |
| CN110113701B (en) * | 2019-03-26 | 2021-11-26 | 晶晨半导体(上海)股份有限公司 | Hardware debugging method for analog microphone |
| 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 |
| CN114466299A (en) * | 2020-11-10 | 2022-05-10 | 北京君正集成电路股份有限公司 | Air tightness and insufficient solder joint detection method for multiple groups of microphones |
| CN113301490A (en) * | 2021-05-26 | 2021-08-24 | 四川长虹电器股份有限公司 | Method for detecting PDM silicon microphone array |
| CN113453137B (en) * | 2021-06-29 | 2023-03-14 | 四川长虹电器股份有限公司 | Method and device for detecting single-microphone abnormity in microphone array |
| CN114325214A (en) * | 2021-11-18 | 2022-04-12 | 国网辽宁省电力有限公司电力科学研究院 | Electric power online monitoring method based on microphone array sound source positioning technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075848A (en) * | 2011-02-17 | 2011-05-25 | 深圳市豪恩声学股份有限公司 | Method and system for testing array microphone and rotating device |
| CN102348156A (en) * | 2010-07-29 | 2012-02-08 | 美商富迪科技股份有限公司 | Voice processing apparatus and method thereof |
| CN102611980A (en) * | 2012-01-13 | 2012-07-25 | 瑞声声学科技(深圳)有限公司 | Sensitivity adjusting system and sensitivity adjusting method of silicon microphone |
| CN104104762A (en) * | 2014-07-22 | 2014-10-15 | 南京声准科技有限公司 | Efficient audio test method of communication terminal |
| CN104602166A (en) * | 2010-03-31 | 2015-05-06 | 弗兰霍菲尔运输应用研究公司 | Microphone array |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090290729A1 (en) * | 2008-05-20 | 2009-11-26 | Fortemedia, Inc. | Categorization platform, method for categorization and method for microphone array manufacturing |
-
2016
- 2016-12-26 CN CN201611220042.1A patent/CN106792415B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602166A (en) * | 2010-03-31 | 2015-05-06 | 弗兰霍菲尔运输应用研究公司 | Microphone array |
| CN102348156A (en) * | 2010-07-29 | 2012-02-08 | 美商富迪科技股份有限公司 | Voice processing apparatus and method thereof |
| CN102075848A (en) * | 2011-02-17 | 2011-05-25 | 深圳市豪恩声学股份有限公司 | Method and system for testing array microphone and rotating device |
| CN102611980A (en) * | 2012-01-13 | 2012-07-25 | 瑞声声学科技(深圳)有限公司 | Sensitivity adjusting system and sensitivity adjusting method of silicon microphone |
| CN104104762A (en) * | 2014-07-22 | 2014-10-15 | 南京声准科技有限公司 | Efficient audio test method of communication terminal |
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