CN110072166A - A kind of hardware adjustment method of digital microphone - Google Patents
A kind of hardware adjustment method of digital microphone Download PDFInfo
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- CN110072166A CN110072166A CN201910218701.5A CN201910218701A CN110072166A CN 110072166 A CN110072166 A CN 110072166A CN 201910218701 A CN201910218701 A CN 201910218701A CN 110072166 A CN110072166 A CN 110072166A
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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- Circuit For Audible Band Transducer (AREA)
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Abstract
The present invention discloses a kind of hardware adjustment method of digital microphone, wherein step S1, measures the signal parameter of all pins of digital microphone；Step S2, the data pin of digital microphone is detected, to check the pin selecting sequence of digital microphone；Step S3, in the rosin joint situation for testing analysis digital microphone under environment；Step S4, it is poor to obtain volume of each microphone pickup hole after closure, and judges whether volume difference meets a volume standard, to analyze the leakproofness in each microphone pickup hole；Step S5, it in testing under environment, records, successively blocks each microphone pickup hole in order, to check the recording sequence in a plurality of microphone pickups hole；Step S6, the outputs level signals parameter and frequency response signal parameter of digital microphone are tested, respectively to check the electrical property of digital microphone.The utility model has the advantages that it is easy to operate, it avoids debugging repeatedly, saves time and cost, avoid the wasting of resources.
Description
Technical field
The present invention relates to digital microphone technical field more particularly to a kind of hardware adjustment methods of digital microphone.
Background technique
It applies with the popularization of intelligent electronic products, smart television, Intelligent set top box, intelligent sound etc. are to need voice
The electronic product of control, voice control need microphone processing to complete, and the speech identifying function of microphone is for voice control
Electronic product for it is most important.Microphone includes simulation microphone and digital microphone, and digital microphone is by analog-to-digital conversion
Function is transferred into microphone from encoder, to realize the digital audio capturing channel from microphone to processor.
Conventionally, as digital microphone strong interference immunity and electrical property consistency are stablized, many voice controls
Related electronic products are commonly used.But during application, a data-interface of digital microphone meets two Mikes
Wind is all difficult to check, it is also difficult to check microphone when there is a microphone rosin joint from test waveform and test data
Recording sequence, producer's pin definitions of different digital microphone are variant, often result in the pin connection error of digital microphone
And encapsulation error, the above reason often will cause that voice cannot identify or speech recognition effect is poor.Language is found according to actual use
Sound cannot identify or speech recognition effect difference looks for reason again, and the above way needs to waste plenty of time, manpower and money, no
It can be fully solved the problem of faulty soldering of microphone, whether the sequence in microphone pickup hole is correct, and whether electrical property meets the requirements etc. one
Series of problems, industry finds good method for removing not yet the case where especially for a microphone rosin joint.
Summary of the invention
For the above-mentioned problems in the prior art, a kind of hardware adjustment method of digital microphone is now provided.
Specific technical solution is as follows:
A kind of hardware adjustment method of digital microphone, the digital microphone include IC chip, analog-to-digital conversion
Device and a plurality of microphone pickups hole, including:
Step S1, the signal parameter of all pins of the digital microphone is measured, to check the digital microphone
The encapsulation situation and powerup issue of all pins；
Step S2, the data pin of the digital microphone is detected, it is suitable with the pin selection for checking the digital microphone
Sequence；
Step S3, a test environment is provided, the rosin joint situation of the digital microphone is analyzed under the test environment；
Step S4, under the test environment, volume of each microphone pickup hole of acquisition after closure is poor, and
Judge whether the volume difference meets a volume standard, to analyze the leakproofness in each microphone pickup hole；
Step S5, it under the test environment, records, successively blocks each microphone pickup hole in order,
To check the recording sequence in a plurality of microphone pickup holes；
Step S6, the outputs level signals parameter and frequency response signal parameter of the digital microphone are tested respectively, with
Check the electrical property of the digital microphone.
Preferably, in Yu Suoshu step S3, the test environment is the audio signal for playing 1KHZ, so that each described
The sound pressure level in microphone pickup hole is close to 94dBSPL.
Preferably, in Yu Suoshu step S3, the method for analyzing the rosin joint situation of the digital microphone is, in the number
The data pin of word microphone connects a pull down resistor and is connected to ground terminal, to check the rosin joint feelings of the digital microphone
Condition.
Preferably, in Yu Suoshu step S3, the method for analyzing the rosin joint situation of the digital microphone is, described in closure
It is by comparing each microphone pickup hole and each described after each of digital microphone microphone pickup hole
The corresponding relationship of voice channel in microphone pickup hole, to analyze the rosin joint situation of the digital microphone.
Preferably, in Yu Suoshu step S4, the volume standard is sound of each microphone pickup hole after closure
Amount difference at least reduces 20dB.
Preferably, in Yu Suoshu step S4, the method for analyzing the leakproofness in each microphone pickup hole is to divide
Not Feng Du odd number microphone pickup hole or block even number microphone pickup hole, judge the microphone pickup
Whether output level of the hole before and after closure meets a level standard, to check the leakage sound feelings in each microphone pickup hole
Condition.
Preferably, the level standard be output level of each microphone pickup hole before closure at least more than
Ten times of output level after closure.
Preferably, in Yu Suoshu step S1, the pin of the digital microphone includes energization pins；And/or selection is drawn
Foot；And/or digital dock pin；
By measuring the energization pins；And/or the selection pin；And/or the signal ginseng of the digital dock pin
It counts to check the electric power thus supplied of the digital microphone.
Preferably, in Yu Suoshu step S2, the data pin of the digital microphone includes:
One first data pin respectively corresponds the first digital signal end and the second digital signal of the digital microphone
End；
One second data pin respectively corresponds the third digital signal end and the 4th digital signal of the digital microphone
End；
One third data pin respectively corresponds the 5th digital signal end and the 6th digital signal of the digital microphone
End；
One the 4th data pin respectively corresponds the 7th digital signal end of the digital microphone；
First digital signal end, the third digital signal end, the 5th digital signal end and the 7th number
Word signal end respectively corresponds the flat selector channel of height of the digital microphone；
Second digital signal end, the 4th digital signal end, the 6th digital signal end respectively correspond described
The Horizon selector channel of digital microphone.
Preferably, in Yu Suoshu step S2, judge the direction sequence in each microphone pickup hole, it is each to check
The pin selecting sequence in microphone pickup hole.
Technical solution of the present invention beneficial effect is: a kind of hardware adjustment method of digital microphone is provided, it can be by
It is solved the problems, such as according to procedure, and disposably checks digital microphone rosin joint situation, pin order connection, electrical performance indexes,
It reduces the waste of resource and guarantees properties of product, and is easy to operate, not needing experience engineer very abundant can quickly determine
Position problem, avoids debugging repeatedly, saves time and cost, avoid the wasting of resources.
Detailed description of the invention
With reference to appended attached drawing, more fully to describe the embodiment of the present invention.However, appended attached drawing is merely to illustrate
And elaboration, and be not meant to limit the scope of the invention.
Fig. 1 is the flow chart of the hardware adjustment method of the digital microphone of the embodiment of the present invention；
Fig. 2 a-2c is the pin test waveform figure of the hardware adjustment method of the digital microphone of the embodiment of the present invention；
Fig. 3 a-3c is the test waves of the rosin joint investigation of the hardware adjustment method of the digital microphone of the embodiment of the present invention
Shape figure；
Fig. 4 a-4d is that the microphone pickup hole of the hardware adjustment method of the digital microphone of the embodiment of the present invention rosin joint occurs
The platform of situation prints and voice output table.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all without creative labor
Other embodiments shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
The present invention includes a kind of hardware adjustment method of digital microphone, and digital microphone includes IC chip, mould
Number converter and a plurality of microphone pickups hole, including:
Step S1, the signal parameter of all pins of digital microphone is measured, to check all pins of digital microphone
Encapsulation situation and powerup issue；
Step S2, the data pin of digital microphone is detected, to check the pin selecting sequence of digital microphone；
Step S3, a test environment is provided, in the rosin joint situation for testing analysis digital microphone under environment；
Step S4, in testing under environment, it is poor to obtain volume of each microphone pickup hole after closure, and judge volume
Whether difference meets a volume standard, to analyze the leakproofness in each microphone pickup hole；
Step S5, it in testing under environment, records, successively blocks each microphone pickup hole in order, it is multiple to check
The recording sequence in several microphone pickups hole；
Step S6, the outputs level signals parameter and frequency response signal parameter of digital microphone are tested, respectively with investigation
The electrical property of digital microphone.
By the technical solution of the hardware adjustment method of above-mentioned digital microphone, as shown in Figure 1, can be according to procedure
It solves the problems, such as, and disposably checks digital microphone MIC rosin joint situation, pin order connection, electrical performance indexes, reduce
The waste and guarantee properties of product of resource, first the encapsulation situation and powerup issue of all pins of investigation digital microphone, tool
Body, as shown in figs. 2 a-2 c, the pin of digital microphone MIC includes energization pins；And/or selection pin；And/or when number
Clock pin, by energization pins；And/or selection pin；And/or the signal parameter of digital dock pin measures, and with
The corresponding recommendation of the digital microphone is compared, when meeting indicate digital microphone energization pins, selection pin and
Digital dock pin is in normal operating condition, i.e., welding is normal, power supply is normal, as shown in Table 1, adjustment method operation letter
It is single, experience engineer's energy quick positioning question very abundant is not needed, avoids debugging repeatedly, saves time and cost, avoid
The wasting of resources.
Also, the MC model of simulation microphone MIC can be detected, simulates microphone MIC model after testing
SPH0644LM4H-1, wherein used in D604 project.
Further, easy to operate using this method, it does not need experience engineer very abundant and can quickly position to ask
Topic, avoids debugging repeatedly, saves time and cost, avoid the wasting of resources.
Table one
Further, as shown in chart two, the data pin of digital microphone MIC is detected, to check digital microphone
The pin selecting sequence of MIC, the data pin of digital microphone MIC first include: the first data pin PDM DATA0, respectively
The the first digital signal end AMIC1 and the second digital signal end AMIC2 of corresponding digital microphone MIC；Second data pin PDM
DATA1 respectively corresponds the third digital signal end AMIC3 and the 4th digital signal end AMIC4 of digital microphone MIC；Third
Data pin PDM DATA2 respectively corresponds the 5th digital signal end AMIC5 and the 6th digital signal end of digital microphone MIC
AMIC6；4th data pin PDM DATA3 respectively corresponds the 7th digital signal end AMIC7 of digital microphone MIC；First
Digital signal end AMIC1, third digital signal end AMIC3, the 5th digital signal end AMIC5 and the 7th digital signal end AMIC7
Respectively correspond the flat selector channel SELECT_H of height of digital microphone MIC；Second digital signal end AMIC2, the 4th number letter
Number end AMIC4, the 6th digital signal end AMIC6 respectively correspond the Horizon selector channel SELECT_L of digital microphone MIC.
And it is possible to the direction sequence by judging each microphone pickup hole, to check each microphone pickup hole
Pin selecting sequence specifically when the direction sequence counter clockwise direction proceeding measurement in each microphone pickup hole, is corresponding in turn to
First microphone pickup hole, second microphone pickup hole, third microphone pickup hole, the 4th microphone pickup hole, the 5th Mike
Wind pickup hole, the 6th microphone pickup hole and the 7th microphone pickup hole, and then indicate that the selection of digital microphone MIC is suitable
Sequence meets the requirements.
Further, easy to operate using this method, it does not need experience engineer very abundant and can quickly position to ask
Topic, avoids debugging repeatedly, saves time and cost, avoid the wasting of resources.
Table two
Further, a test environment is provided, in testing under environment the rosin joint situation for analyzing digital microphone, is tested
Environment is the audio signal for playing 1KHZ, so that the sound pressure level in each microphone pickup hole is close to 94dBSPL, in the embodiment
In, the method for analyzing the rosin joint situation of digital microphone includes two kinds.
Specifically, as shown in figs 3 a-3 c, first method is, using audio processing software Audacity and oscillograph one
It is same to analyze, after each microphone pickup hole for blocking digital microphone MIC, by comparing each microphone pickup hole and often
The corresponding relationship of voice channel in a microphone pickup hole, to analyze the rosin joint situation of digital microphone, in digital microphone
One pull down resistor of data pin PDM_DATA connection of MIC is simultaneously connected to ground terminal, to check the rosin joint feelings of digital microphone
The resistance value of condition, pull down resistor is 1K, and the rosin joint feelings of digital microphone are further judged by the test result of test waveform
Condition, Fig. 3 a indicate that the data pin PDM DATA of digital microphone MIC works normally waveform, and Fig. 3 b is for indicating odd number
Digital microphone MIC in the first microphone MIC1 there is the waveform of rosin joint；Its Fig. 3 c is used to indicate the digital microphone of even number
There is the waveform of rosin joint in second microphone MIC2 in MIC rosin joint, as shown in Table 3.
Table three
Further, second method is to merge automatic testing software using Amlogic MIC automated software algorithm
It surveys, the audio signal of 1KHz is adjusted into horn volume, so that each microphone pickup hole site is tested close to 94dB SPL, so
Tuning amount and entrance automatic test order carry out automation adjustment afterwards, in carrying out detection process, digital microphone MIC work
To make in the normal range, volume reaches -37+/- 5dB, as shown in Fig. 4 a-4b, for indicating test result, specifically,
Fig. 4 a indicates the platform printing and voice output in the corresponding first microphone pickup hole ch0, and so on, in fig.4 all
Microphone pickup hole it is all normal, shown in Fig. 4 b, the first microphone pickup hole, the 4th microphone pickup hole, the 6th Mike
There is the platform printing of rosin joint situation and voice output in wind pickup hole and the 7th microphone pickup hole.
Also, it is obtained by Amlogic MIC automated software test of heuristics, is occurred in the digital microphone MIC of odd number
The platform printing of rosin joint situation and voice output as illustrated in fig. 4 c, that is, indicate the first microphone pickup hole, third microphone pickup
There is the platform printing of rosin joint situation and voice output such as Fig. 4 c in hole, the 5th microphone pickup hole and the 7th microphone pickup hole
It is shown, occur the platform printing of rosin joint situation and voice output in the digital microphone MIC rosin joint of even number as shown in figure 4d, i.e.,
There is the platform printing of rosin joint situation and language in second microphone pickup hole, the 4th microphone pickup hole, the 6th microphone pickup hole
Sound exports as shown in figure 4d, as shown in Table 4.
Table four
It should be noted that when implementing the adjustment method, because Mike's wind error, test fixture and environmental parameter cause
Error not as influence the beneficial effect the reason of, details are not described herein.
Further, easy to operate using the adjustment method of any one in above two mode, do not need experience
Engineer's energy quick positioning question very abundant, avoids debugging repeatedly, saves time and cost, avoid the wasting of resources.
Further, in testing under environment, it is poor to obtain volume of each microphone pickup hole after closure, and judge sound
Whether amount difference meets a volume standard, and to analyze the leakproofness in each microphone pickup hole, volume standard is each Mike
Volume difference of the wind pickup hole after closure at least reduces 20dB, and analyzes the side of the leakproofness in each microphone pickup hole
Method is the microphone pickup hole for blocking odd number respectively or the microphone pickup hole for blocking even number, judges that microphone pickup hole is being sealed
Whether the output level of stifled front and back meets a level standard, to check the leakage sound situation in each microphone pickup hole, level mark
Standard is ten times of output level of each microphone pickup hole before closure at least more than the output level after closure.
Further, easy to operate using this method, it does not need experience engineer very abundant and can quickly position to ask
Topic, avoids debugging repeatedly, saves time and cost, avoid the wasting of resources.
Further, it in testing under environment, records, successively blocks each microphone pickup hole in order, with investigation
The recording sequence in a plurality of microphone pickups hole, then tests the outputs level signals parameter and frequency of digital microphone respectively
Response signal parameter, to check the electrical property of digital microphone.
Further, easy to operate using this method, it does not need experience engineer very abundant and can quickly position to ask
Topic, avoids debugging repeatedly, saves time and cost, avoid the wasting of resources.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (10)
1. a kind of hardware adjustment method of digital microphone, the digital microphone includes IC chip, analog-digital converter
And a plurality of microphone pickups hole characterized by comprising
Step S1, the signal parameter of all pins of the digital microphone is measured, to check all of the digital microphone
The encapsulation situation and powerup issue of pin；
Step S2, the data pin of the digital microphone is detected, to check the pin selecting sequence of the digital microphone；
Step S3, a test environment is provided, the rosin joint situation of the digital microphone is analyzed under the test environment；
Step S4, under the test environment, it is poor to obtain volume of each microphone pickup hole after closure, and judge institute
State whether volume difference meets a volume standard, to analyze the leakproofness in each microphone pickup hole；
Step S5, it under the test environment, records, successively blocks each microphone pickup hole in order, with row
Look into the recording sequence in a plurality of microphone pickup holes；
Step S6, the outputs level signals parameter and frequency response signal parameter of the digital microphone are tested, respectively with investigation
The electrical property of the digital microphone.
2. the hardware adjustment method of digital microphone according to claim 1, which is characterized in that in Yu Suoshu step S3,
The audio signal that the test environment be broadcasting 1KHZ, so that the sound pressure level in each microphone pickup hole is close to 94dBSPL.
3. the hardware adjustment method of digital microphone according to claim 1, which is characterized in that in Yu Suoshu step S3,
The method for analyzing the rosin joint situation of the digital microphone is to connect a pull down resistor in the data pin of the digital microphone
And it is connected to ground terminal, to check the rosin joint situation of the digital microphone.
4. the hardware adjustment method of digital microphone according to claim 1, which is characterized in that in Yu Suoshu step S3,
The method for analyzing the rosin joint situation of the digital microphone is to block each of described digital microphone microphone pickup hole
Later, by comparing each microphone pickup hole pass corresponding with the voice channel in each microphone pickup hole
System, to analyze the rosin joint situation of the digital microphone.
5. the hardware adjustment method of digital microphone according to claim 1, which is characterized in that in Yu Suoshu step S4,
The volume standard is that volume difference of each microphone pickup hole after closure at least reduces 20dB.
6. the hardware adjustment method of digital microphone according to claim 1, which is characterized in that in Yu Suoshu step S4,
The method for analyzing the leakproofness in each microphone pickup hole is to block microphone pickup hole or the envelope of odd number respectively
The microphone pickup hole of stifled even number, judges whether output level of the microphone pickup hole before and after closure meets an electricity
Flat standard, to check the leakage sound situation in each microphone pickup hole.
7. the hardware adjustment method of digital microphone according to claim 6, which is characterized in that the level standard is every
Ten times of output level of a microphone pickup hole before closure at least more than the output level after closure.
8. the hardware adjustment method of digital microphone according to claim 1, which is characterized in that in Yu Suoshu step S1,
The pin of the digital microphone includes energization pins；And/or selection pin；And/or digital dock pin；
By measuring the energization pins；And/or the selection pin；And/or the signal parameter of the digital dock pin with
Check the electric power thus supplied of the digital microphone.
9. the hardware adjustment method of digital microphone according to claim 1, which is characterized in that in Yu Suoshu step S2,
The data pin of the digital microphone includes:
One first data pin respectively corresponds the first digital signal end and the second digital signal end of the digital microphone；
One second data pin respectively corresponds the third digital signal end and the 4th digital signal end of the digital microphone；
One third data pin respectively corresponds the 5th digital signal end and the 6th digital signal end of the digital microphone；
One the 4th data pin respectively corresponds the 7th digital signal end of the digital microphone；
The first digital signal signal end, the third digital signal end, the 5th digital signal end and the 7th number
Word signal end respectively corresponds the flat selector channel of height of the digital microphone；
The second digital signal signal end, the 4th digital signal end, the 6th digital signal end respectively correspond described
The Horizon selector channel of digital microphone.
10. the hardware adjustment method of digital microphone according to claim 1, which is characterized in that in Yu Suoshu step S2,
The direction sequence in each microphone pickup hole is judged, to check the pin selecting sequence in each microphone pickup hole.
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| CN110996241A (en) * | 2019-12-12 | 2020-04-10 | 苏州市运泰利自动化设备有限公司 | Microphone testing device |
| CN111148005A (en) * | 2019-11-11 | 2020-05-12 | 云知声智能科技股份有限公司 | Method and device for detecting mic sequence |
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| CN113453138A (en) * | 2021-06-29 | 2021-09-28 | 四川长虹电器股份有限公司 | Method for detecting microphone sequence in 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 |
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