CN206260060U - A kind of directional microphone - Google Patents
A kind of directional microphone Download PDFInfo
- Publication number
- CN206260060U CN206260060U CN201620849708.9U CN201620849708U CN206260060U CN 206260060 U CN206260060 U CN 206260060U CN 201620849708 U CN201620849708 U CN 201620849708U CN 206260060 U CN206260060 U CN 206260060U
- Authority
- CN
- China
- Prior art keywords
- substrate
- chamber enclosure
- groove
- directional microphone
- acoustic aperture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000000758 substrate Substances 0.000 claims description 46
- 239000002184 metal Substances 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The utility model is related to a kind of microphone, more particularly to a kind of directional microphone.In the utility model, it is big as by the way that ante-chamber is arranged to the volume of back cavity, although being provided with sound transducer in the back cavity in above-mentioned technical proposal, but due to the small volume of sensor, can be ignored, so the volume of the ante-chamber of above-mentioned technical proposal and back cavity may be considered identical, and the size of acoustic aperture is also identical, the sound for enabling to the acoustic aperture of ante-chamber to enter is strengthened, and realizes the effect that sound is pointed to.
Description
Technical field
The utility model is related to a kind of microphone, more particularly to a kind of directional microphone.
Background technology
Existing microphone carries out carrying out voice signal generally by algorithm when the voice recognition of specific direction
Calculating, if needing substantial amounts of calculating, such as Fourier transformation, spectrum analysis etc. using algorithm this technical scheme, refer to
Substantial amounts of technical support is needed to the realization of microphone, is implemented complex.
Utility model content
For the problem that prior art is present, now there is provided a kind of directional microphone.
Specific technical scheme is as follows：
A kind of directional microphone, including：
First substrate；
Second substrate, is arranged on the first substrate, and the second substrate offers the first groove；
3rd substrate, is arranged on the second substrate, and the second groove and the 3rd recessed is offered on the 3rd substrate
Groove, second groove and the 3rd groove are circulated using first groove；
Preceding chamber enclosure, is covered on second groove, with forming ante-chamber, the preceding chamber enclosure on the 3rd substrate
On offer the first acoustic aperture；
Chamber enclosure, is covered on the 3rd groove afterwards, with forming back cavity, the rear chamber enclosure on the 3rd substrate
On offer the second acoustic aperture；
Sound transducer, is arranged in the back cavity, and the sound transducer is connected with the 3rd groove；
Wherein, first acoustic aperture is identical with the size of second acoustic aperture, the volume phase of the ante-chamber and the back cavity
Together.
Preferably, the preceding chamber enclosure is sheet metal.
Preferably, the rear chamber enclosure is sheet metal.
Preferably, the thickness of the preceding chamber enclosure is less than or equal to 0.1 millimeter.
Preferably, the thickness of the rear chamber enclosure is less than or equal to 0.1 millimeter.
Preferably, the preceding chamber enclosure is contacted with the rear chamber enclosure.
Preferably, the preceding chamber enclosure and the rear chamber enclosure are covered on the 3rd substrate by surface mounting technology
On.
Preferably, the first substrate and/or the second substrate and/or the 3rd substrate are printed circuit board (PCB).
Preferably, pad can be connected under the first substrate.
Preferably, can connecting sucker on the preceding chamber enclosure and/or the rear chamber enclosure.
The beneficial effect of above-mentioned technical proposal is：
In above-mentioned technical proposal, by the way that ante-chamber is arranged to the volume of back cavity as it is big, although in above-mentioned technical proposal
Back cavity in be provided with sound transducer, but due to the small volume of sensor, can be ignored, so above-mentioned technical proposal
Ante-chamber and the volume of back cavity may be considered identical, and the size of acoustic aperture is also identical, enables to the sound of ante-chamber
The sound that hole enters is strengthened, and realizes the effect that sound is pointed to.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the embodiment of directional microphone of the utility model.
Specific embodiment
It should be noted that in the case where not conflicting, following technical proposals can be mutually combined between technical characteristic.
Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings：
A kind of directional microphone, as shown in figure 1, including：
First substrate 1；
Second substrate 2, is arranged on first substrate 1, and second substrate 2 offers the first groove 21；
3rd substrate 3, is arranged on second substrate 2, and the second groove 31 and the 3rd groove are offered on the 3rd substrate 3
32, the second groove 31 and the 3rd groove 32 are circulated using the first groove 21；
Preceding chamber enclosure 4, is covered on the second groove 31, in ante-chamber 41 is formed on the 3rd substrate 3, to be opened on preceding chamber enclosure 4
It is provided with the first acoustic aperture 42；
Chamber enclosure 5, are covered on the 3rd groove 32 afterwards, in back cavity 51 is formed on the 3rd substrate 3, to be opened on rear chamber enclosure 5
It is provided with the second acoustic aperture 52；
Sound transducer 6, is arranged in back cavity 51, and sound transducer 7 is connected with the 3rd groove 32；
Wherein, the first acoustic aperture 42 is identical with the size of the second acoustic aperture 52, and ante-chamber 41 is identical with the volume of back cavity 51.
In the present embodiment, sound enters ante-chamber by the first acoustic aperture on preceding chamber enclosure, and first is entered by the second groove
Groove, enters sound transducer (sensor) by the 3rd groove again afterwards, and sound transducer is sensed to sound, this implementation
The volume of example ante-chamber and back cavity is equal, and the first acoustic aperture and the second acoustic aperture is equal in magnitude, consistent with rear cavity pressure in ante-chamber
When, sensitivity is strengthened, and the capacitance of ante-chamber and back cavity is constant, and the sound entered from the first acoustic aperture becomes the sensing of microphone
Sound, the microphone of the present embodiment can strengthen the sound of the first acoustic aperture.
Further, the microphone of the present embodiment can be MEMS microphone, collect specific by the change of mechanical structure
The sound in direction.
In one preferred embodiment of the utility model, preceding chamber enclosure is sheet metal.
In one preferred embodiment of the utility model, rear chamber enclosure is sheet metal.
In one preferred embodiment of the utility model, the thickness of preceding chamber enclosure is less than or equal to 0.1 millimeter.
In one preferred embodiment of the utility model, the thickness of rear chamber enclosure is less than or equal to 0.1 millimeter.
In one preferred embodiment of the utility model, preceding chamber enclosure is contacted with rear chamber enclosure.
In one preferred embodiment of the utility model, preceding chamber enclosure and rear chamber enclosure are covered on by surface mounting technology
On 3rd substrate.
In above-described embodiment, due to covering sheet metal on the 3rd substrate, it is more frivolous that sheet metal can do, and compares
In traditional printed circuit board (PCB), using sheet metal as preceding chamber enclosure and rear chamber enclosure so that microphone is more frivolous, additionally,
Sheet metal fills technology and is covered on the 3rd substrate by Surface Fe, and surface mounting technology (SMT) process is simple, cost is relatively low,
Reduce the cost of manufacture of microphone.Also, sheet metal also enhances Electro-static Driven Comb (ESD) effect of microphone.
In one preferred embodiment of the utility model, first substrate and/or second substrate and/or the 3rd substrate are printing
Circuit board.
In one preferred embodiment of the utility model, pad can be connected under first substrate.
In one preferred embodiment of the utility model, can connecting sucker on preceding chamber enclosure and/or rear chamber enclosure.
In above-described embodiment, by the printed circuit board (PCB) (first, second and third substrate) for stacking, the lower section of first substrate can be with
Connection pad, is conveniently welded, while chamber enclosure is set to metal material after by ante-chamber, facilitates sucker inhale by preceding
Chamber, rear chamber enclosure.
To sum up, in above-mentioned technical proposal, by the way that ante-chamber is arranged to the volume of back cavity as it is big, although above-mentioned technical side
Sound transducer is provided with back cavity in case, but due to the small volume of sensor, be can be ignored, institute's techniques described above
The ante-chamber of scheme and the volume of back cavity may be considered identical, and the size of acoustic aperture is also identical, enables to ante-chamber
Acoustic aperture enter sound strengthen, realize sound point to effect.
By explanation and accompanying drawing, the exemplary embodiments of the ad hoc structure of specific embodiment are given, it is new based on this practicality
Type spirit, can also make other conversions.Although above-mentioned utility model proposes existing preferred embodiment, however, these contents
It is not intended as limitation.
For a person skilled in the art, after reading described above, various changes and modifications undoubtedly will be evident that.
Therefore, appending claims should regard the whole variations and modifications for covering true intention of the present utility model and scope as.
Any and all scope and content of equal value, are all considered as still belonging to intention of the present utility model and model in Claims scope
In enclosing.
Claims (10)
1. a kind of directional microphone, it is characterised in that including：
First substrate；
Second substrate, is arranged on the first substrate, and the second substrate offers the first groove；
3rd substrate, is arranged on the second substrate, and the second groove and the 3rd groove, institute are offered on the 3rd substrate
The second groove and the 3rd groove is stated to circulate using first groove；
Preceding chamber enclosure, is covered on second groove, in ante-chamber is formed on the 3rd substrate, to be opened on the preceding chamber enclosure
It is provided with the first acoustic aperture；
Chamber enclosure, is covered on the 3rd groove afterwards, in back cavity is formed on the 3rd substrate, to be opened on the rear chamber enclosure
It is provided with the second acoustic aperture；
Sound transducer, is arranged in the back cavity, and the sound transducer is connected with the 3rd groove；
Wherein, first acoustic aperture is identical with the size of second acoustic aperture, and the ante-chamber is identical with the volume of the back cavity.
2. directional microphone according to claim 1, it is characterised in that the preceding chamber enclosure is sheet metal.
3. directional microphone according to claim 1, it is characterised in that the rear chamber enclosure is sheet metal.
4. directional microphone according to claim 2, it is characterised in that the thickness of the preceding chamber enclosure is less than or equal to 0.1
Millimeter.
5. directional microphone according to claim 2, it is characterised in that the thickness of the rear chamber enclosure is less than or equal to 0.1
Millimeter.
6. directional microphone according to claim 1, it is characterised in that the preceding chamber enclosure connects with the rear chamber enclosure
Touch.
7. directional microphone according to claim 1, it is characterised in that the preceding chamber enclosure and the rear chamber enclosure pass through
Surface mounting technology is covered on the 3rd substrate.
8. directional microphone according to claim 1, it is characterised in that the first substrate and/or the second substrate
And/or the 3rd substrate is printed circuit board (PCB).
9. directional microphone according to claim 1, it is characterised in that pad can be connected under the first substrate.
10. according to any described directional microphone of Claims 2 or 3, it is characterised in that the preceding chamber enclosure and/or described
Afterwards can connecting sucker on chamber enclosure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620849708.9U CN206260060U (en) | 2016-08-08 | 2016-08-08 | A kind of directional microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620849708.9U CN206260060U (en) | 2016-08-08 | 2016-08-08 | A kind of directional microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206260060U true CN206260060U (en) | 2017-06-16 |
Family
ID=59022073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620849708.9U Withdrawn - After Issue CN206260060U (en) | 2016-08-08 | 2016-08-08 | A kind of directional microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206260060U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231454A (en) * | 2016-08-08 | 2016-12-14 | 钰太芯微电子科技（上海）有限公司 | A kind of directional microphone |
-
2016
- 2016-08-08 CN CN201620849708.9U patent/CN206260060U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231454A (en) * | 2016-08-08 | 2016-12-14 | 钰太芯微电子科技（上海）有限公司 | A kind of directional microphone |
| CN106231454B (en) * | 2016-08-08 | 2024-03-26 | 钰太芯微电子科技（上海）有限公司 | Directional microphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170616 Effective date of abandoning: 20240326 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170616 Effective date of abandoning: 20240326 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |