CN207531086U - Headphone Microphone calibration measurement jig - Google Patents
Headphone Microphone calibration measurement jig Download PDFInfo
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- CN207531086U CN207531086U CN201721373072.6U CN201721373072U CN207531086U CN 207531086 U CN207531086 U CN 207531086U CN 201721373072 U CN201721373072 U CN 201721373072U CN 207531086 U CN207531086 U CN 207531086U
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- ear cup
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- auris dextra
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Abstract
The utility model provides a kind of headphone Microphone calibration measurement jig, including ear cup fixed mechanism, artificial mouth and mobile mechanism；Wherein, ear cup fixed mechanism is arranged in mobile mechanism, including left ear cup locating piece, auris dextra cup locating piece and the left ear cup briquetting to match respectively with left ear cup locating piece and auris dextra cup locating piece and auris dextra cup briquetting；Wherein, the left ear cup of headphone and auris dextra cup are positioned respectively by corresponding ear cup locating piece, distinguish the corresponding ear cup of stationary positioned by left ear cup briquetting and auris dextra cup briquetting；Mobile mechanism drives ear cup fixed mechanism to be moved horizontally relative to artificial mouth, to be carried out at the same time Microphone calibration test to the left ear cup being fixed positioned in left ear cup locating piece and the auris dextra cup being fixed positioned in auris dextra cup locating piece.The intensity of voice signal that can receive each microphone by the utility model is consistent, and then ensures the accuracy of Microphone calibration test data.
Description
Technical field
The utility model is related to acoustical testing jig technical fields, more specifically, are related to a kind of headphone microphone
Calibration test jig.
Background technology
The quality of the voice signal in relation to sound source and/ambient enviroment is extracted to improve headphone at present, it will usually in head
Wear setting at least four microphone in earphone.Since each single microphone is there are certain difference, in order to make each microphone
Electroacoustic feature it is consistent as possible, need to each microphone carry out calibration test.
However, the position of each microphone aperture set in headphone is inconsistent at present, microphone acoustic aperture
Direction is also different, and headphone ear cup (Earcup) partly with wear part generally also can there are relative displacement phenomenon,
Therefore, when each microphone to headphone carries out calibration test, it is difficult to accurately fix entire headphone.
In addition, during calibration test is carried out to each microphone, headphone is placed on measurement jig every time
When, it is desirable that size of the microphone of headphone apart from artificial mouth is consistent, however, when being provided with more than two microphones in earphone
When, current Microphone calibration measurement jig is then unable to reach above-mentioned coherence request, in this way, can then cause to headphone
Microphone positioning it is inaccurate, so as to influence the stability of test data.
Utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of headphone Microphone calibration measurement jig, with
Solve the problems, such as that current Microphone calibration measurement jig can not be accurately positioned microphone.
The utility model provides a kind of headphone Microphone calibration measurement jig, including ear cup fixed mechanism, artificial mouth
And mobile mechanism；Wherein, ear cup fixed mechanism is arranged in mobile mechanism, including left ear cup locating piece, auris dextra cup locating piece, with
And the left ear cup briquetting and auris dextra cup briquetting to match respectively with left ear cup locating piece and auris dextra cup locating piece；Wherein, ear is worn
The left ear cup and auris dextra cup of machine are positioned respectively by corresponding ear cup locating piece, and left ear cup is fixed positioned on by left ear cup briquetting
Left ear cup in locating piece is fixed positioned on the auris dextra cup in auris dextra cup locating piece by auris dextra cup briquetting；Mobile mechanism drives
Ear cup fixed mechanism is moved horizontally relative to artificial mouth, determined with fixed the left ear cup being fixed positioned in left ear cup locating piece
Auris dextra cup of the position in auris dextra cup locating piece is carried out at the same time Microphone calibration test.
Furthermore it is preferred that structure be：Be respectively arranged in left ear cup locating piece and auris dextra cup locating piece positioning convex platform and
Positioning groove；Wherein, positioning convex platform and positioning groove coordinate respectively with the groove of corresponding ear cup shell and boss, corresponding to realize
The positioning of ear cup and corresponding ear cup locating piece.
Furthermore it is preferred that structure be：Be respectively arranged at the edge of left ear cup locating piece and auris dextra cup locating piece protrusion with
The side wall of corresponding ear cup locating piece is formed, side wall is used to compensate what the voice signal that artificial mouth is sent out was generated with corresponding ear cup shell
Sound wave reflects.
Furthermore it is preferred that structure be：It is anti-according to the voice signal that artificial mouth is sent out and sound wave that corresponding ear cup shell generates
Penetrate width and depth that value determines the side wall of corresponding ear cup locating piece.
Furthermore it is preferred that structure be：Left ear cup briquetting and auris dextra cup briquetting include pressure head fixed block and are fixed with pressure head
The rotary cylinder that block is connected；Wherein, pressure head is provided in pressure head fixed block, rotary cylinder band dynamic head fixed block vertically moves
It is dynamic, the ear cup in corresponding ear cup locating piece is fixed positioned on by pressure head.
Furthermore it is preferred that structure be：The part that ear cup in pressure head ear cup locating piece corresponding to being fixed positioned on is in contact
For silica gel or rubber.
Furthermore it is preferred that structure be：Corresponding ear cup presses rotary cylinder in the block to be fixed on corresponding ear cup locating piece.
Furthermore it is preferred that structure be：Mobile mechanism includes fixed bottom plate, the slider cylinder being arranged on fixed bottom plate, sets
Put the supporting block in slider cylinder and the sliding shoe being connected by supporting block with slider cylinder；Wherein, the one of sliding shoe
End is provided with locating piece fixed plate, and ear cup fixed mechanism is fixed in locating piece fixed plate, and slider cylinder drives sliding shoe horizontal
It is mobile, so that the ear cup fixed mechanism being fixed in locating piece fixed plate is moved horizontally relative to artificial mouth.
Furthermore it is preferred that structure be：Artificial mouth supporting rod is provided on fixed bottom plate, artificial mouth is supported by artificial mouth
Bar is fixed on fixed bottom plate, and the intersection point of the voice directions of each microphone in left ear cup and auris dextra cup is located at the artificial mouth
Central axis on.
Furthermore it is preferred that structure be：First flange bearing, second flange bearing are provided in locating piece fixed plate, with
And the first locating piece supporting rod and the second locating piece supporting rod being connected respectively with first flange bearing and second flange bearing, it is left
Ear cup locating piece and auris dextra cup locating piece are fixed on positioning by the first locating piece supporting rod and the second locating piece supporting rod respectively
In block fixed plate.
Above-mentioned headphone Microphone calibration measurement jig provided by the utility model, by being set in ear cup fixed mechanism
Put left ear cup locating piece and auris dextra cup locating piece respectively position the left ear cup of headphone and auris dextra cup respectively, by
The left ear cup briquetting and auris dextra cup briquetting that setting matches with left ear cup locating piece and auris dextra cup locating piece in ear cup fixed mechanism
The ear cup being fixed positioned in corresponding ear cup locating piece is fixed respectively, ear cup is being driven to fix machine to avoid mobile mechanism
When structure is moved horizontally relative to artificial mouth, left ear cup and auris dextra cup are subjected to displacement in corresponding ear cup locating piece, so as to
Ensure, when being carried out at the same time left ear cup and auris dextra cup by artificial mouth Microphone calibration test, to make in left ear cup and auris dextra cup
Distance of each microphone apart from artificial mouth is consistent, so that the intensity for the voice signal that each microphone receives is consistent, and then
Ensure the accuracy of Microphone calibration test data.
Description of the drawings
By reference to the description below in conjunction with attached drawing, and with the utility model is more fully understood, this reality
It will be more apparent and should be readily appreciated that with novel other purposes and result.In the accompanying drawings：
Fig. 1 is to be illustrated according to the overall structure of the headphone Microphone calibration measurement jig of the utility model embodiment
Figure；
Fig. 2 is the left ear cup locating piece according to the headphone Microphone calibration measurement jig of the utility model embodiment
Structure diagram；
Fig. 3 is the knot according to the left ear cup briquetting of the headphone Microphone calibration measurement jig of the utility model embodiment
Structure schematic diagram；
Fig. 4 is the structure according to the mobile mechanism of the headphone Microphone calibration measurement jig of the utility model embodiment
Schematic diagram；
Fig. 5 is to be shown according to the structure of the supporting rod of the headphone Microphone calibration measurement jig of the utility model embodiment
It is intended to.
Identical label indicates similar or corresponding feature or function in all the appended drawings.
In figure：Left ear cup locating piece 11, positioning convex platform 111, positioning groove 112, side wall 113, auris dextra cup locating piece 12, a left side
Ear cup briquetting 13, pressure head fixed block 131, rotary cylinder 132, pressure head 133, auris dextra cup briquetting 14, artificial mouth 2, mobile mechanism 3,
Fixed bottom plate 31, slider cylinder 32, supporting block 33, sliding shoe 34, locating piece fixed plate 35, first flange bearing 351, the second method
Blue bearing 352, the first locating piece supporting rod 353, the second locating piece supporting rod 354, artificial mouth supporting rod 36.
Specific embodiment
Specific embodiment of the utility model is described in detail below with reference to attached drawing.
The problem of microphone can not being accurately positioned for aforementioned current Microphone calibration measurement jig, this practicality
It is novel by setting left ear cup locating piece and auris dextra cup locating piece in ear cup fixed mechanism respectively to the left ear cup of headphone
It is positioned respectively with auris dextra cup, by being set and left ear cup locating piece and auris dextra cup locating piece phase in ear cup fixed mechanism
The left ear cup briquetting and auris dextra cup briquetting matched respectively are fixed the ear cup being fixed positioned in corresponding ear cup locating piece, to keep away
Exempt from mobile mechanism when ear cup fixed mechanism is driven to be moved horizontally relative to artificial mouth, left ear cup and auris dextra cup are corresponding
It is subjected to displacement in ear cup locating piece, so that it is guaranteed that being surveyed being carried out at the same time Microphone calibration to left ear cup and auris dextra cup by artificial mouth
During examination, make left ear cup consistent with distance of each microphone in auris dextra cup apart from artificial mouth, so that the sound that each microphone receives
The intensity of sound signal is consistent, and then ensures the accuracy of Microphone calibration test data.
Machine is needed to illustrate, the ear cup mentioned by the utility model is divided into and human body or so the corresponding left ear cup of ear and the right side
Ear cup for the part that headphone is in contact with human body ear, generally includes microphone and ear cup shell, at present to improve
The acoustical behavior of headphone is usually each provided with more than two microphones in left ear cup and auris dextra cup.
To illustrate headphone Microphone calibration measurement jig provided by the utility model, Fig. 1 is shown according to this practicality
The overall structure of the headphone Microphone calibration measurement jig of new embodiment, Fig. 2 shows implemented according to the utility model
The structure of the left ear cup locating piece of the headphone Microphone calibration measurement jig of example, Fig. 3 are shown according to the utility model reality
The structure of the left ear cup briquetting of the headphone Microphone calibration measurement jig of example is applied, Fig. 4 is shown according to the utility model reality
The structure of the mobile mechanism of the headphone Microphone calibration measurement jig of example is applied, Fig. 5 is shown to be implemented according to the utility model
The structure of the supporting rod of the headphone Microphone calibration measurement jig of example.
As shown in Figures 1 to 5, headphone Microphone calibration measurement jig provided by the utility model is fixed including ear cup
Mechanism, artificial mouth 2 and mobile mechanism 3；Wherein, ear cup fixed mechanism is arranged in mobile mechanism 3, including left ear cup locating piece
11st, auris dextra cup locating piece 12 and the left ear cup briquetting to match respectively with left ear cup locating piece 11 and auris dextra cup locating piece 12
13 and auris dextra cup briquetting 14.Wherein, the left ear cup of headphone and auris dextra cup are positioned (i.e. respectively by corresponding ear cup locating piece
The left ear cup of headphone is positioned by left ear cup locating piece, and auris dextra cup is positioned by auris dextra cup locating piece), pass through left ear cup pressure
Block 13 is fixed positioned on the left ear cup in left ear cup locating piece 11, and auris dextra cup locating piece is fixed positioned on by auris dextra cup briquetting 14
Auris dextra cup in 12；Mobile mechanism 3 drives ear cup fixed mechanism to be moved horizontally relative to artificial mouth 2, with to being fixed positioned on a left side
Left ear cup in ear cup locating piece 11 carries out Microphone calibration test with the auris dextra cup being fixed positioned in auris dextra cup locating piece 12.
Wherein, positioning convex platform and positioning groove are respectively arranged in left ear cup locating piece and auris dextra cup locating piece, positioned
Boss and positioning groove coordinate respectively with the groove of corresponding ear cup shell and boss, and to realize, mutually corresponding ear cup is determined with corresponding ear cup
The positioning of position block.That is, left ear cup is arranged on left ear cup positioning positioning in the block with being located through for left ear cup locating piece
Boss and positioning groove realize that auris dextra cup is arranged on auris dextra cup positioning convex in the block with being located through for auris dextra cup locating piece
Platform and positioning groove are realized.Specifically, as shown in Fig. 2, being provided with positioning convex platform 111 in left ear cup locating piece 11 and positioning recessed
Slot 112, positioning convex platform 111 and the groove of left ear cup shell coordinate, and positioning groove 112 and the boss of left ear cup shell coordinate, from
And left ear cup is located in left ear cup locating piece.It should be noted that Fig. 2 illustrate only the structure of left ear cup locating piece,
The structure of auris dextra cup locating piece is identical with the structure of left ear cup locating piece, no longer excessively repeats herein.
In addition, the voice signal that artificial mouth is sent out would generally generate sound wave reflection with ear cup shell, so as to influence microphone
Pickup to voice signal.In order to avoid sound wave reflection is on microphone on influence produced by the pickup of voice signal, in left ear cup
The edge of locating piece and auris dextra cup locating piece is respectively arranged with protrusion to form the side wall of corresponding ear cup locating piece (i.e. in left ear cup
The edge of locating piece is provided with protrusion to form the side wall of left ear cup locating piece, is again provided at the edge of auris dextra cup locating piece
Protrusion is to form the side wall of auris dextra cup locating piece), the side wall be used to compensating voice signal that artificial mouth sends out with outside corresponding ear cup
The sound wave reflection that shell generates.Likewise, as shown in Fig. 2, protrusion is provided at the edge of left ear cup locating piece 11 to form left ear
The side wall 113 of cup locating piece, the side wall of the left ear cup locating piece be used to compensating voice signal that artificial mouth sends out with outside left ear cup
The sound wave reflection that shell generates.
Further, it needs true according to the voice signal that artificial mouth is sent out and sound wave reflected value that corresponding ear cup shell generates
The width and depth of the side wall of fixed corresponding ear cup locating piece.That is, the width and depth of the side wall of left ear cup locating piece need
It to be determined according to the sound wave reflected value that the voice signal that artificial mouth is sent out is generated with left ear cup shell, the side wall of auris dextra cup locating piece
Width and the sound wave reflected value that is generated according to the voice signal that artificial mouth is sent out with auris dextra cup shell of depth needs determine.Into one
Step ground, the voice signal that usual artificial mouth is sent out and the sound wave reflected value that corresponding ear cup shell generates and corresponding ear cup shell
Area is related, therefore, can be according to corresponding ear cup shell when determining the width and depth of side wall of corresponding ear cup locating piece
Area determines.
In addition, above-mentioned left ear cup briquetting and auris dextra cup briquetting include pressure head fixed block and are connected with pressure head fixed block
Rotary cylinder；Wherein, pressure head is provided in pressure head fixed block, rotary cylinder band dynamic head fixed block is vertically movable, passes through pressure
Head is fixed positioned on the ear cup in corresponding ear cup locating piece；What the ear cup in pressure head locating piece corresponding to being fixed positioned on was in contact
Part is silica gel or rubber；In addition, in order to simplify the structure of Microphone calibration jig, corresponding ear cup presses rotary cylinder in the block
It is fixed on corresponding ear cup locating piece.
Specifically, as 1 with reference to shown in Fig. 3, left ear cup briquetting 13 include pressure head fixed block 131 and with pressure head fixed block 131
Connected rotary cylinder 132；Wherein, pressure head 133 is provided in pressure head fixed block 131, rotary cylinder 132 is fixed with dynamic head
Block 131 is vertically movable, and the left ear cup in left ear cup locating piece is fixed positioned on by pressure head 133.Wherein, pressure head 133 is with fixing
The part that the left ear cup being located in left ear cup locating piece is in contact is silica gel or rubber.In addition, in order to simplify structure, left ear
Cup presses rotary cylinder in the block to be fixed on left ear cup locating piece, and auris dextra cup presses rotary cylinder in the block to be fixed on the positioning of auris dextra cup
On block.Likewise, the structure of auris dextra cup briquetting 14 is identical with the structure of left ear cup briquetting 13, again may be by such as Fig. 3
The auris dextra cup being located in auris dextra cup locating piece is fixed in shown structure, also no longer excessively repeats herein.
Further, above-mentioned mobile mechanism 3 include fixed bottom plate 31, the slider cylinder 32 being arranged on fixed bottom plate 31,
The supporting block 33 being arranged in slider cylinder 32 and the sliding shoe 34 being connected by supporting block 33 with slider cylinder 32；Wherein,
Locating piece fixed plate 35 is provided in one end of sliding shoe 34, above-mentioned ear cup fixed mechanism is fixed in locating piece fixed plate 35,
Slider cylinder 32 drive sliding shoe 34 move horizontally so that the ear cup fixed mechanism being fixed in locating piece fixed plate 35 relative to
Artificial mouth 2 moves horizontally.
Wherein, artificial mouth supporting rod 36 is provided on fixed bottom plate 31, artificial mouth 2 is fixed by artificial mouth supporting rod 36
On fixed bottom plate 31, and the intersection point of the voice directions of each microphone in left ear cup and auris dextra cup is located at the central shaft of artificial mouth
On line, in this way, can then make the result of the calibration test of microphone more accurate.
In addition, first flange bearing 351, second flange bearing 352 and difference are provided in locating piece fixed plate 35
The the first locating piece supporting rod 353 and the second locating piece supporting rod being connected with first flange bearing 351 and second flange bearing 352
354, left ear cup locating piece 11 is fixed on by the first locating piece supporting rod 353 in locating piece fixed plate 35, auris dextra cup locating piece
12 are fixed on by the second locating piece supporting rod 354 in locating piece fixed plate 35.It should be noted that setting first flange bearing
Purpose with second flange bearing be in order to ensure the positioning accuracy of the first locating piece supporting rod and the second locating piece supporting rod and
Enhance the support strength of supporting rod；Furthermore, it is possible to the first locating piece supporting rod and the second locating piece supporting rod are provided in round
Its surface roughness is set as 1.6 microns by structure, in this way, can then reduce the reflective surface area of sound wave, it is ensured that the standard of test data
True property.
It is following the calibration test process of headphone Microphone calibration measurement jig provided by the utility model to be carried out
Explanation.The calibration test process of headphone Microphone calibration measurement jig provided by the utility model is as follows：
Mobile mechanism drives ear cup fixed mechanism to be moved horizontally to the direction far from artificial mouth, so as to make ear cup fixed mechanism
Go out and test shielded box, the left ear cup of headphone and auris dextra cup are individually positioned in left ear cup locating piece and auris dextra cup by tester
On locating piece, then start test, at this point, left ear cup briquetting and auris dextra cup press rotary cylinder in the block to drive under respective pressure head
Pressure, being fixed with will be located into the ear cup in corresponding ear cup locating piece respectively, preventing from wearing ear in mobile mechanism's motion process
The left ear cup and auris dextra cup of machine generate shaking, it is ensured that ear cup accurate positioning, it is to be placed to there is left ear cup and the ear cup of auris dextra cup to fix
After mechanism is completely into shielded box, tested by artificial mouth sounding with the microphone to headphone.
By above-mentioned it is found that headphone Microphone calibration measurement jig provided by the utility model can make each microphone
The intensity of the voice signal received is consistent, so that it is guaranteed that the accuracy of Microphone calibration test data.
Headphone Microphone calibration test according to the present utility model is described in an illustrative manner above with reference to attached drawing to control
Tool.It will be understood by those skilled in the art, however, that the headphone Microphone calibration proposed for above-mentioned the utility model is surveyed
Jig is tried, various improvement can also be made on the basis of the utility model content is not departed from.Therefore, the protection of the utility model
Range should be determined by the content of appended claims.
Claims (10)
1. a kind of headphone Microphone calibration measurement jig, including ear cup fixed mechanism and artificial mouth；It is characterized in that, it also wraps
Include mobile mechanism；Wherein,
The ear cup fixed mechanism is arranged in the mobile mechanism, including left ear cup locating piece, auris dextra cup locating piece, Yi Jifen
The left ear cup briquetting and auris dextra cup briquetting not matched with the left ear cup locating piece and auris dextra cup locating piece；Wherein,
The left ear cup and auris dextra cup of headphone are positioned respectively by corresponding ear cup locating piece, are consolidated by the left ear cup briquetting
Surely the left ear cup being located in the left ear cup locating piece is fixed positioned on the auris dextra cup by the auris dextra cup briquetting and positions
Auris dextra cup in block；
The mobile mechanism drives the ear cup fixed mechanism to be moved horizontally relative to the artificial mouth, with to being fixed positioned on
The auris dextra cup stated the left ear cup in left ear cup locating piece and be fixed positioned in the auris dextra cup locating piece is carried out at the same time microphone
Calibration test.
2. headphone Microphone calibration measurement jig as described in claim 1, which is characterized in that
Positioning convex platform and positioning groove are respectively arranged in the left ear cup locating piece and auris dextra cup locating piece；Wherein,
The positioning convex platform and positioning groove coordinate respectively with the groove of corresponding ear cup shell and boss, with realize corresponding ear cup with
The positioning of corresponding ear cup locating piece.
3. headphone Microphone calibration measurement jig as described in claim 1, which is characterized in that
Protrusion is respectively arranged at the edge of the left ear cup locating piece and auris dextra cup locating piece to form corresponding ear cup locating piece
Side wall, the side wall, which is used to compensating the voice signal that artificial mouth sends out and the sound wave that corresponding ear cup shell generates, to be reflected.
4. headphone Microphone calibration measurement jig as claimed in claim 3, which is characterized in that
The sound wave reflected value generated according to the voice signal that artificial mouth is sent out with corresponding ear cup shell determines that the corresponding ear cup is determined
The width and depth of the side wall of position block.
5. headphone Microphone calibration measurement jig as described in claim 1, which is characterized in that
The left ear cup briquetting and auris dextra cup briquetting include pressure head fixed block and the rotary pneumatic being connected with the pressure head fixed block
Cylinder；Wherein,
Pressure head is provided in the pressure head fixed block, the rotary cylinder drives the pressure head fixed block vertically movable, passes through
The pressure head is fixed positioned on the ear cup in corresponding ear cup locating piece.
6. headphone Microphone calibration measurement jig as claimed in claim 5, which is characterized in that
The part that ear cup in pressure head ear cup locating piece corresponding to being fixed positioned on is in contact is silica gel or rubber.
7. headphone Microphone calibration measurement jig as claimed in claim 5, which is characterized in that
Corresponding ear cup presses rotary cylinder in the block to be fixed on corresponding ear cup locating piece.
8. headphone Microphone calibration measurement jig as described in claim 1, which is characterized in that
The mobile mechanism includes fixed bottom plate, the slider cylinder being arranged on the fixed bottom plate, is arranged on the slide unit gas
Supporting block on cylinder and the sliding shoe being connected by the supporting block with the slider cylinder；Wherein,
Locating piece fixed plate is provided in one end of the sliding shoe, the ear cup fixed mechanism is fixed on the locating piece and fixes
On plate, the slider cylinder drives the sliding shoe to move horizontally, so that the ear cup being fixed in the locating piece fixed plate is consolidated
Determine mechanism to move horizontally relative to the artificial mouth.
9. headphone Microphone calibration measurement jig as claimed in claim 8, which is characterized in that
Artificial mouth supporting rod is provided on the fixed bottom plate, the artificial mouth is fixed on institute by the artificial mouth supporting rod
It states on fixed bottom plate, and the intersection point of the voice directions of each microphone in left ear cup and auris dextra cup is located at the center of the artificial mouth
On axis.
10. headphone Microphone calibration measurement jig as claimed in claim 8, which is characterized in that
Be provided in the locating piece fixed plate first flange bearing, second flange bearing and respectively with first method
The the first locating piece supporting rod and the second locating piece supporting rod that blue bearing is connected with second flange bearing, the left ear cup locating piece
The locating piece is fixed on auris dextra cup locating piece by the first locating piece supporting rod and the second locating piece supporting rod respectively to fix
On plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721373072.6U CN207531086U (en) | 2017-10-23 | 2017-10-23 | Headphone Microphone calibration measurement jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721373072.6U CN207531086U (en) | 2017-10-23 | 2017-10-23 | Headphone Microphone calibration measurement jig |
Publications (1)
| Publication Number | Publication Date |
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| CN207531086U true CN207531086U (en) | 2018-06-22 |
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ID=62570767
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| CN201721373072.6U Active CN207531086U (en) | 2017-10-23 | 2017-10-23 | Headphone Microphone calibration measurement jig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112333620A (en) * | 2020-12-02 | 2021-02-05 | 歌尔科技有限公司 | Microphone calibration detection device |
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2017
- 2017-10-23 CN CN201721373072.6U patent/CN207531086U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112333620A (en) * | 2020-12-02 | 2021-02-05 | 歌尔科技有限公司 | Microphone calibration detection device |
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