CN103974179B - Microphone correction method - Google Patents
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- CN103974179B CN103974179B CN201310744322.2A CN201310744322A CN103974179B CN 103974179 B CN103974179 B CN 103974179B CN 201310744322 A CN201310744322 A CN 201310744322A CN 103974179 B CN103974179 B CN 103974179B
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Abstract
The invention discloses a microphone correction method, which comprises the following steps: firstly, measuring the standard sensitivity of a sample microphone on a standard test sound source under different frequencies; the method comprises the steps of placing the sample microphone at a first position of a microphone testing system, measuring a first position sensitivity of the sample microphone at the first position when a testing sound source of the microphone testing system outputs a first signal from the first position, and correcting a sound pressure when the testing sound source outputs the first signal into the sound pressure of the standard testing sound source according to the standard sensitivity and the first position sensitivity.
Description
Technical field
The present invention corrects a large amount of microphones to be measured on a kind of microphone correction method especially with regard to a kind of test
Microphone correction method.
Background technology
Microphone is a kind of radio equipment, and its application is quite varied, each in mobile phone, tablet personal computer and notebook computer
Have setting in kind of electronic installation, in the society of the running gears such as mobile phone now popularization, the demand of microphone also with when it is cumulative,
And in response to the demand of user, yield lifting, volume miniaturization and the quality requirements of microphone are to reach needed for this industry
Elementary object.
In order to reduce fraction defective during microphone shipment, it is necessary to every master data of microphone is directly tested, to determine
The microphone assembled can normal operation, and microphone dispatch from the factory before Quality Detection, also in response to consumer's quality and gradually therewith
Improve.
Existing microphone correction method, first send fixed frequency using a standard source of sound（1kHz）And fixed sound press
（94dBSPL）Voice signal, measured with a standard microphone to a sensitivity, then the sensitivity correction of standard microphone accordingly
The output sound press of standard testing source of sound, and calibration standard test tone comes from the frequency response of different frequency, then by standard testing
The voice signal that source of sound provides, measure the sensitivity of sample microphone.When testing microphone to be measured, microphone to be measured is put one by one
Enter to measure its sensitivity in test environment, then compared with the sensitivity of sample microphone, as subsequent correction reference according to
According to.
To coordinate huge market demand, it is required to accord with that industry there's no one who doesn't or isn't lifts yield, but above-mentioned existing microphone method
It is only capable of substantial amounts of microphone to be measured delivering to the high laboratory of cost one by one and is detected, whether entrusts laboratory to be surveyed
Examination or manufacturer voluntarily set laboratory, and both prices are very high, and due to being only capable of entering for single microphone to be measured every time
Row test so that correction detection is extremely time-consuming, is unfavorable for the volume production efficiency of microphone.
Based on above-mentioned, there is provided a kind of wheat for the test correction cost that can be improved production efficiency simultaneously and reduce microphone to be measured
Gram wind correction method of testing, is just needed badly by this industry.
The content of the invention
The purpose of the present invention is to provide a kind of simple, quick and cheap cost microphone correction method, makes wheat to be measured
The correction test of gram wind batch can be completed, and need not be in laboratory test correction individually, and then lift the life of microphone one by one
Produce efficiency and test correction cost.
For the above-mentioned purpose and other purposes, microphone correction method of the invention, comprising：First measure a sample microphone
In the normal sensibility of a standard testing source of sound at different frequencies；The sample microphone is placed in a microphone test system
One first position, when a test tone of the microphone test system comes from the first position one first signal of output, measure the sample
Product microphone is in a first position sensitivity of the first position, and according to the normal sensibility and the first position sensitivity,
And the sound press when test source of sound is exported into first signal is corrected to the sound press of the standard testing source of sound；After correction
The test source of sound exports first signal, measures a second place sensitivity of the sample microphone in a second place；And
Compare the normal sensibility with the second place sensitivity to obtain a second place offset of first signal.
Another microphone correction method of the present invention, comprising：A sample microphone is first measured in a standard testing source of sound to exist
Normal sensibility under different frequency；The sample microphone is placed in a first position of a microphone test system, the Mike
When one test tone of wind test system comes from the first position one first signal of output, the sample microphone is measured in this first
The first position sensitivity put, and according to the normal sensibility and the first position sensitivity, and the test source of sound is exported
Sound press during first signal is corrected to the sound press of the standard testing source of sound；Using the test source of sound after correction export this
One signal, it is placed in multiple positions of a microphone test system simultaneously using multiple sample microphones, measures those sample wheats
Gram wind differs in the sensitivity of those positions, the wherein first position with those positions；And compare the normal sensibility
Sensitivity with those positions is to obtain the offset of those positions of first signal.
In order to which above-mentioned purpose, technical characteristic and advantage more people in the art scholar can be known and applied, hereafter with
The several preferred embodiments and accompanying drawing of the present invention are described in detail.
Brief description of the drawings
Figure 1A to Fig. 1 D, Fig. 4 A to Fig. 4 C are the microphone correction method flow diagram of the embodiment of the present invention；And
Fig. 2A to Fig. 3 B is to set schematic diagram using the microphone test system of the microphone correction method of the present invention.
Wherein, description of reference numerals is as follows：
201：Standard source of sound
203：Standard microphone
205：Standard testing source of sound
207：Sample microphone
209：Test source of sound
211：Microphone sets platform
31、32、33、34、35、36、37：First position, the second place, the 3rd position, the 4th position, the 5th position,
Six positions, the 7th position
Embodiment
Present invention will be explained by embodiment below, however, being only to explain this hair on the explanation in embodiment
Bright technology contents and its purpose effect, and it is not used to the directly limitation present invention.Must expositor, following examples and diagram
In, have been omitted to the indirect related element of the present invention and do not illustrate；And illustrate in each element size and relative position relation
Only to illustrate to understand, it is not used to limit implementation ratio and size.
One embodiment of the invention is a kind of microphone correction method, and its flow chart is as shown in Figure 1A to Fig. 1 C.This implementation
The microphone correction method of example is applied in a microphone test system.
As shown in Fig. 2A to Fig. 3 B setting schematic diagram, aforementioned microphone test system includes：One standard source of sound 201, one
Standard microphone 203, a standard testing source of sound 205, a sample microphone 207, one test source of sound 209, a microphone set flat
Platform 211, the microphone set platform 211 to have multiple set locations 31~37, and the set location of the present embodiment shares seven, also
I.e. most middle first position 31 and positioned at the second place 32 of two sides, the 3rd position 33, the 4th position 34, the 5th position
35th, the 6th position 36, the 7th position 37.In the present embodiment, standard testing source of sound 205 and test source of sound 209 can be one artificial
Mouth, full-range loudspeaker or sounding horn etc. are any.
As shown in Figure 1A to Fig. 1 C, the microphone correction method of the present embodiment, its detailed process step is as follows：
Step 100, Fig. 2A to Fig. 2 B is please also refer to, standard source of sound 201 can send fixed frequency and fixed sound press, example
Such as, it is 94dBSPL to send sound press, and frequency is 1000Hz signal, and this standard source of sound 201 is measured using a standard microphone 203,
To obtain a reference sensitivity of standard microphone 203.Then, using the reference sensitivity correcting mark of this standard microphone 203
The sound press of quasi- test source of sound 205；In detail, when the sound press of standard testing source of sound 205 provides a voice signal, standard microphone
After 203 receive, an off-gauge sensitivity can be provided, the output sound press of standard testing source of sound 205 is now adjusted, with standard Mike
The reference sensitivity of wind 203 is foundation, thereby calibration standard test source of sound 205.
Step 101, Fig. 2 C are please also refer to, in a standard test environment, first provide difference with standard testing source of sound 205
The voice signal of frequency, and after the voice signal of measurement one sample microphone 207 reception different frequency, gained corresponds to different frequencies
Several normal sensibilities of rate, sample microphone 207 herein that is, the standard sample being commonly called as（golden sample）.Standard
Test environment is an anechoic chamber, one without ringing case or a sound proof box, but not limited to this.
Step 103, Fig. 3 A are please also refer to, sample microphone 207 is arranged at into microphone in microphone test system sets
The first position 31 of horizontalization platform 211, the test source of sound 209 of microphone test system is exported one first signal, then measure sample
Product microphone 207 receives a first position sensitivity of this first signal in first position 31, is now arranged at first position 31
Sample microphone 207 can receive the sound press that this first signal is transmitted, it is then sensitive with first position sensitivity and standard
Spend for criterion, and the output sound press for testing source of sound 209 is corrected to the standard sound press of standard testing source of sound 205.Wherein, the first letter
Number there is a first frequency, and normal sensibility that is, standard testing source of sound 205 herein provides the voice signal of first frequency
When, sample microphone 207 receives the normal sensibility of gained.
Step 105, Fig. 3 B are please also refer to, sample microphone 207 is arranged at a second place 32, reused in previous
Test source of sound 209 after step correction exports the first signal, after measurement sample microphone 207 receives this first signal, is produced
A raw second place sensitivity related to the second place 32.
Step 107, the normal sensibility is compared with the second place sensitivity to obtain a second place of first signal
Offset.
Step 109, sample microphone 207 is arranged at one the 3rd position 33, reuses the test after step 103 correction
Source of sound 209 exports the first signal, produced with the phase of the 3rd position 33 after measurement sample microphone 207 receives this first signal
One the 3rd position-sensitivity closed；Compare the normal sensibility with the 3rd position-sensitivity to obtain the one the 3rd of first signal
Position compensation value.
Step 111, sample microphone 207 is arranged at one the 4th position 34, reuses the test after step 103 correction
Source of sound 209 exports the first signal, produced with the phase of the 4th position 34 after measurement sample microphone 207 receives this first signal
One the 4th position-sensitivity closed；Compare the normal sensibility with the 4th position-sensitivity to obtain the one the 4th of first signal
Position compensation value.
Step 113, sample microphone 207 is arranged at one the 5th position 35, reuses the test after step 103 correction
Source of sound 209 exports the first signal, produced with the phase of the 5th position 35 after measurement sample microphone 207 receives this first signal
One the 5th position-sensitivity closed；Compare the normal sensibility with the 5th position-sensitivity to obtain the one the 5th of first signal
Position compensation value.
Step 115, sample microphone 207 is arranged at one the 6th position 36, reuses the test after step 103 correction
Source of sound 209 exports the first signal, produced with the phase of the 6th position 36 after measurement sample microphone 207 receives this first signal
One the 6th position-sensitivity closed；Compare the normal sensibility with the 6th position-sensitivity to obtain the one the 6th of first signal
Position compensation value.
Step 117, sample microphone 207 is arranged at one the 7th position 37, reuses the test after step 103 correction
Source of sound 209 exports the first signal, produced related to the 7th position 37 after measurement sample microphone receives this first signal
One the 7th position-sensitivity；Compare the normal sensibility with the 7th position-sensitivity to obtain one the 7th position of first signal
Offset.
As shown in Figure 1 C, following steps 121 to step 127 for provide receive different frequency signals when, microphone to be measured in
Correct the difference adjusted needed for test, the visual aligning step of following step or demand and adjust progress order, and in step 103
Carry out, or carried out in step 107 to step 117 after any one afterwards.
Step 121, sample microphone 207 is arranged at first position, reuses the test source of sound after step 103 correction
209 one secondary signals of output, after measurement sample microphone 207 receives this secondary signal, with the produced by first position 31
The related first position sensitivity of binary signal.Wherein, secondary signal has a second frequency, and second frequency is different from the first frequency
Rate.It should be noted that first position sensitivity herein is related to secondary signal, be different from step 103 with the first signal phase
The first position sensitivity of pass.
Step 123, the sound by the test source of sound 209 of microphone test system when first position 31 exports secondary signal
Pressure is corrected to the sound press of the standard testing source of sound 205.
Step 125, secondary signal is exported using the test source of sound 209 after correction, measurement sample microphone 207 is in second
Put 32 second place sensitivity.It should be noted that second place sensitivity herein is related to secondary signal, step is different from
105 second place sensitivity related to the first signal.
Step 127, standard of comparison sensitivity is compensated with second place sensitivity with obtaining a second place of a secondary signal
Value.Illustrate, second place offset herein is related to secondary signal, is different from the related to the first signal of step 107
Second place offset.
It should be noted that above-mentioned steps are only to test the secondary signal with second frequency in the offset of the second place,
But because microphone to be measured must correct completion in particular frequency range and all test positions, thus still need by sample microphone with
The signal of other frequencies is corrected test in all positions, therefore category those skilled in the art of the present technique can not spread to person easily, therefore
Do not repeat separately herein.
Also, as shown in figure iD, following steps 131 to step 137 are another way to provide reception different frequency signals
When, microphone to be measured adjusts progress in the difference adjusted needed for correction test, the visual aligning step of following step or demand
Sequentially, and after step 103 carry out, or carried out in step 107 to step 117 after any one.
Step 131, sample microphone 207 is arranged at first position, reuses the test source of sound after step 103 correction
209 one secondary signals of output, after measurement sample microphone 207 receives this secondary signal, with the produced by first position 31
The related first position sensitivity of binary signal.Wherein, secondary signal has a second frequency, and second frequency is different from the first frequency
Rate.It should be noted that first position sensitivity herein is related to secondary signal, be different from step 103 with the first signal phase
The first position sensitivity of pass.
Step 133, the normal sensibility is compared with the first position sensitivity to obtain a first position of the secondary signal
Offset.
Step 135, the secondary signal exported using foregoing test source of sound 209, measurement sample microphone 207 is in the second place
32 second place sensitivity.It should be noted that second place sensitivity herein is related to secondary signal, step is different from
105 second place sensitivity related to the first signal.
Step 137, standard of comparison sensitivity is compensated with second place sensitivity with obtaining a second place of a secondary signal
Value.Illustrate, second place offset herein is related to secondary signal, is different from the related to the first signal of step 107
Second place offset.
Similarly, above-mentioned steps are only to test the secondary signal with second frequency in the offset of the second place, but by
Completion must be corrected in particular frequency range and all test positions in microphone to be measured, therefore still needed sample microphone with other
The signal of frequency is corrected test in all positions, therefore category those skilled in the art of the present technique can not spread to person easily, therefore herein
Do not repeat separately.In addition, the Main Differences of step 121 to step 127 and step 131 to step 137 two ways are first
Put different operating during output secondary signal（Step 123 and step 133）, the former directly corrects sound press, and the latter then utilizes compensation
Value is corrected.
In addition, the microphone correction method of the present invention also can be respectively provided with sample Mike in the position 37 of first position 31 to the 7th
Wind 207, that is, seven sample microphones 207 are set, use the standard spirit obtained corresponding to the sample microphone 207 of diverse location
Sensitivity, then use while test and obtain each position sensitivity compensation value.
In detail, Fig. 4 A are refer to, it is changed to perform the following steps after above-mentioned steps 103：
Step 305, other six sample microphones 207 are also arranged at the position 37 of the second place 32 to the 7th simultaneously, then
The first signal is exported using the test source of sound 209 after correction, is measured after such sample microphone 207 receives this first signal,
A produced second place sensitivity related to the position 37 of the second place 32 to the 7th, one the 3rd position-sensitivity, one the 4th
Position-sensitivity, one the 5th position-sensitivity, one the 6th position-sensitivity, one the 7th position-sensitivity；Wherein, first position 31
Differed to the 7th position 37.
Step 307, the normal sensibility is compared with the second place sensitivity to the 7th position-sensitivity to obtain respectively
Mended to a second place offset of first signal, one the 3rd position compensation value, one the 4th position compensation value, one the 5th position
Repay value, one the 6th position compensation value, one the 7th position compensation value.
Compared down with Fig. 2A to Fig. 2 B flow, the above method only needs to perform step 100, step 101, step 103, step
305 and step 307.
And for example shown in Fig. 4 B, Fig. 4 C, it is respectively that microphone to be measured is tested in correction when providing to receive different frequency signals
Needed for two kinds of flow and methods of difference for adjusting.It is suitable that step shown in this two figure can equally adjust progress according to step demand
Sequence, carry out after step 103, or carried out in step 107 to step 117 after any one.
As shown in Figure 4 B, step 401, sample microphone 207 is arranged at first position, uses the test source of sound after correction
209 one secondary signals of output, after measurement sample microphone receives this secondary signal, believe produced by first position 31 with second
Number related first position sensitivity.
Step 403, the sound by the test source of sound 209 of microphone test system when first position 31 exports secondary signal
Pressure is corrected to the sound press of standard testing source of sound 205.
Step 405, other six sample microphones 207 are also arranged at the position 37 of the second place 32 to the 7th simultaneously, made
Secondary signal is exported with the test source of sound 209 after correction, while measures those sample microphones 207 and receives this secondary signal
Afterwards, a produced second place sensitivity related to the second place 32 to the 7th position 37, one the 3rd position-sensitivity, one
Four position-sensitivities, one the 5th position-sensitivity, one the 6th position-sensitivity, one the 7th position-sensitivity.
Step 407, the normal sensibility is compared with the second place sensitivity to the 7th position-sensitivity to obtain respectively
Mended to a second place offset of the secondary signal, one the 3rd position compensation value, one the 4th position compensation value, one the 5th position
Repay value, one the 6th position compensation value, one the 7th position compensation value.
And another way is then as shown in Figure 4 C, step 411, sample microphone 207 is arranged at into first position, uses correction
D tests source of sound 209 and exports a secondary signal afterwards, after measurement sample microphone receives this secondary signal, in the institute of first position 31
Produce the first position sensitivity related to secondary signal.
Step 413, standard of comparison sensitivity and first position sensitivity, to obtain the first position related to secondary signal
Offset.
Step 415, other six sample microphones 207 are also arranged at the position 37 of the second place 32 to the 7th simultaneously, made
Secondary signal is exported with the test source of sound 209 after correction, while measures those sample microphones 207 and receives this secondary signal
Afterwards, a produced second place sensitivity related to the second place 32 to the 7th position 37, one the 3rd position-sensitivity, one
Four position-sensitivities, one the 5th position-sensitivity, one the 6th position-sensitivity, one the 7th position-sensitivity.
Step 417, the normal sensibility and the second place sensitivity to the 7th position-sensitivity are compared, and reference should
The first position offset of secondary signal, to respectively obtain a second place offset of the secondary signal, one the 3rd position is mended
Repay value, one the 4th position compensation value, one the 5th position compensation value, one the 6th position compensation value, one the 7th position compensation value.
After the step of having performed above-mentioned microphone correction method, the microphone to be measured to be tested can be arranged at above-mentioned
Seven positions, and according to each position compensation value of different frequency signals obtained by abovementioned steps, correction test setting is used in not
With the microphone to be measured of position, lifting correction testing efficiency, and then reduce correction testing cost.It should be noted that above-mentioned seven
Individual position is only to illustrate, and those skilled in the art can spread to the method for testing of the test position of other quantity easily and element is matched somebody with somebody
Put.
Because the test correction of existing microphone is both needed to carry out in laboratory, therefore test correction expense is high, if not it will treat
Survey microphone to deliver to laboratory and entrust and carried out by other people, the high laboratory of price just must be voluntarily set, the survey that both are spent
Examination cost incurs a considerable or great expense, and when palpus volume production microphone, will produce the difficulty of cost, professional degree and enforceability.
Microphone correction method provided by the present invention, not only without carrying out microphone test to be measured in laboratory, more may be used
Several microphones to be measured are tested with single test source of sound simultaneously, each position compensation provided by microphone correction method
Value, can reach the effect detected one by one.Therefore, microphone correction method of the invention can be greatly reduced when producing microphone
It subsequent correction testing cost, can more simplify complicated correction testing procedure, improve yield and more improve production firm's competitiveness.
The present invention has hereinbefore been disclosed with preferred embodiment, so it will be understood by those skilled in the art that the embodiment
It is only used for describing the present invention, and is not construed as limiting the scope of the present invention.It is it should be noted that such as equivalent with the embodiment
Change and displacement, all should be set to be covered by scope of the invention.Therefore, protection scope of the present invention is worked as to apply for a patent right
Claimed range institute defender is defined.
Claims (15)
1. a kind of microphone correction method, comprising：
First measure the normal sensibility of a sample microphone in a standard testing source of sound and at different frequencies；
The sample microphone is placed in a first position of a microphone test system, a test tone of the microphone test system
When coming from the first position one first signal of output, it is sensitive in a first position of the first position to measure the sample microphone
Degree, and according to the normal sensibility and the first position sensitivity, and the sound when test source of sound to export to first signal
Pressure is corrected to the sound press of the standard testing source of sound；
First signal is exported using the test source of sound after correction, measures the sample microphone in the one second of a second place
Position-sensitivity；And
Compare the normal sensibility with the second place sensitivity to obtain a second place offset of first signal.
2. microphone correction method as claimed in claim 1, the wherein first position are a centre position, the second place is side
Side position.
3. microphone correction method as claimed in claim 1, first signal has a first frequency, and the wherein first frequency is
1000Hz。
4. microphone correction method as claimed in claim 1, is also included：A sample microphone is being measured in a standard testing source of sound
And before the step of normal sensibility at different frequencies, a standard microphone is corrected using a standard source of sound, recycling should
Standard microphone corrects the standard testing source of sound, and the wherein standard source of sound can send the signal of fixed frequency and fixed sound press.
5. microphone correction method as claimed in claim 2, wherein the sample microphone is measured using a standard testing source of sound, with
The step to the normal sensibility of the sample microphone is carried out in a standard test environment.
6. microphone correction method as claimed in claim 5, the wherein standard test environment be an anechoic chamber, one without ring case or one every
Audio amplifier.
7. a kind of microphone correction method, comprising：
First measure the normal sensibility of a sample microphone in a standard testing source of sound and at different frequencies；
The sample microphone is placed in a first position of a microphone test system, a test tone of the microphone test system
When coming from the first position one first signal of output, it is sensitive in a first position of the first position to measure the sample microphone
Degree, and according to the normal sensibility and the first position sensitivity, and the sound when test source of sound to export to first signal
Pressure is corrected to the sound press of the standard testing source of sound；
The sample microphone is placed in the first position, when the test tone comes from the first position one secondary signal of output, measurement
The sample microphone is in the first position sensitivity related to the secondary signal of the first position；And
According to the normal sensibility and the first position sensitivity related to the secondary signal, by the test source of sound export this second
Sound press during signal is corrected to the sound press of the standard testing source of sound.
8. microphone correction method as claimed in claim 7, is also included：
The secondary signal is exported using the test source of sound, it is sensitive in a second place of a second place to measure the sample microphone
Degree；And
Compare the normal sensibility and the second place sensitivity to obtain a second place offset of the secondary signal.
9. microphone correction method as claimed in claim 7, the secondary signal has a second frequency.
10. a kind of microphone correction method, comprising：
First measure the normal sensibility of a sample microphone in a standard testing source of sound and at different frequencies；
The sample microphone is placed in a first position of a microphone test system, a test tone of the microphone test system
When coming from the first position one first signal of output, it is sensitive in a first position of the first position to measure the sample microphone
Degree, and according to the normal sensibility and the first position sensitivity, and the sound when test source of sound to export to first signal
Pressure is corrected to the sound press of the standard testing source of sound；
The sample microphone is placed in the first position, when the test tone comes from the first position one secondary signal of output, measurement
The sample microphone is in the first position sensitivity related to the secondary signal of the first position；And
Compare the normal sensibility and the first position sensitivity related to the secondary signal to obtain the 1 of the secondary signal
One position compensation value.
11. such as the microphone correction method of claim 10, also include：
The secondary signal is exported using the test source of sound, it is sensitive in a second place of a second place to measure the sample microphone
Degree；And
Compare the normal sensibility with the second place sensitivity to obtain a second place offset of the secondary signal.
12. such as the microphone correction method of claim 10, the secondary signal has a second frequency.
13. a kind of microphone correction method, comprising：
First measure the normal sensibility of a sample microphone in a standard testing source of sound and at different frequencies；
The sample microphone is placed in a first position of a microphone test system, a test tone of the microphone test system
When coming from the first position one first signal of output, it is sensitive in a first position of the first position to measure the sample microphone
Degree, and according to the normal sensibility and the first position sensitivity, and the sound when test source of sound to export to first signal
Pressure is corrected to the sound press of the standard testing source of sound；
First signal is exported using the test source of sound after correction, a microphone is placed in simultaneously using multiple sample microphones
Multiple positions of test system, measure the multiple sample microphones in the sensitivity of the plurality of position, wherein the first position with
The plurality of position differs；And
Compare the sensitivity of the normal sensibility and the plurality of position to obtain the offset of the plurality of position of first signal.
14. such as the microphone correction method of claim 13, also include：
The test source of sound exports a secondary signal, and it is related to the secondary signal in the first position to measure the sample microphone
First position sensitivity；
The test tone of the microphone test system is come to the sound press when first position exports the secondary signal to be corrected to
The sound press of the standard testing source of sound；
The secondary signal is exported using the test source of sound after correction, while measures the plurality of sample microphone in the plurality of position
The sensitivity related to the secondary signal；And
Compare the sensitivity related to the secondary signal of the normal sensibility and the plurality of position to obtain the secondary signal
The offset of the plurality of position.
15. such as the microphone correction method of claim 13, also include：
The test source of sound exports a secondary signal, and it is related to the secondary signal in the first position to measure the sample microphone
First position sensitivity；
Compare the normal sensibility and the first position sensitivity related to the secondary signal to obtain the first of the secondary signal
Position compensation value；
Export the secondary signal using the test source of sound, at the same measure the plurality of sample microphone in the plurality of position with this
The related sensitivity of binary signal；And
Compare the sensitivity related to the secondary signal of the normal sensibility and the plurality of position to obtain the secondary signal
The offset of the plurality of position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102103379A TWI429298B (en) | 2013-01-29 | 2013-01-29 | Microphone calibration method |
| TW102103379 | 2013-01-29 |
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| CN103974179A CN103974179A (en) | 2014-08-06 |
| CN103974179B true CN103974179B (en) | 2017-11-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9813830B2 (en) * | 2014-06-03 | 2017-11-07 | Intel Corporation | Automated equalization of microphones |
| TWI612821B (en) * | 2016-06-22 | 2018-01-21 | 宏相科技股份有限公司 | Automated microphone calibration systems |
| TWI651004B (en) * | 2017-08-02 | 2019-02-11 | 百辰光電股份有限公司 | Microphone testing equipment and method thereof |
| CN109391893A (en) * | 2017-08-10 | 2019-02-26 | 百辰光电股份有限公司 | Microphone test equipment and its method |
| CN114449434B (en) * | 2022-04-07 | 2022-08-16 | 北京荣耀终端有限公司 | Microphone calibration method and electronic equipment |
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| US5029215A (en) * | 1989-12-29 | 1991-07-02 | At&T Bell Laboratories | Automatic calibrating apparatus and method for second-order gradient microphone |
| WO2010026724A1 (en) * | 2008-09-04 | 2010-03-11 | ダイトロンテクノロジー株式会社 | Microphone check device and check method |
| CN101986723A (en) * | 2010-11-01 | 2011-03-16 | 瑞声声学科技(深圳)有限公司 | Test system and test method for pressure gradient microphone |
| CN102711029A (en) * | 2012-01-09 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Testing method of intrinsic noise voltage of microphone and testing device of testing method |
| CN102811411A (en) * | 2011-05-11 | 2012-12-05 | 英飞凌科技股份有限公司 | Microphone arrangement |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5293275B2 (en) * | 2009-03-03 | 2013-09-18 | 船井電機株式会社 | Microphone unit |
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2013
- 2013-01-29 TW TW102103379A patent/TWI429298B/en not_active IP Right Cessation
- 2013-12-24 CN CN201310744322.2A patent/CN103974179B/en not_active Expired - Fee Related
Patent Citations (5)
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|---|---|---|---|---|
| US5029215A (en) * | 1989-12-29 | 1991-07-02 | At&T Bell Laboratories | Automatic calibrating apparatus and method for second-order gradient microphone |
| WO2010026724A1 (en) * | 2008-09-04 | 2010-03-11 | ダイトロンテクノロジー株式会社 | Microphone check device and check method |
| CN101986723A (en) * | 2010-11-01 | 2011-03-16 | 瑞声声学科技(深圳)有限公司 | Test system and test method for pressure gradient microphone |
| CN102811411A (en) * | 2011-05-11 | 2012-12-05 | 英飞凌科技股份有限公司 | Microphone arrangement |
| CN102711029A (en) * | 2012-01-09 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Testing method of intrinsic noise voltage of microphone and testing device of testing method |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI429298B (en) | 2014-03-01 |
| TW201347566A (en) | 2013-11-16 |
| CN103974179A (en) | 2014-08-06 |
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