CN110719539A - Be applied to microphone support installation adapter of low noise reflection - Google Patents
Be applied to microphone support installation adapter of low noise reflection Download PDFInfo
- Publication number
- CN110719539A CN110719539A CN201911013603.4A CN201911013603A CN110719539A CN 110719539 A CN110719539 A CN 110719539A CN 201911013603 A CN201911013603 A CN 201911013603A CN 110719539 A CN110719539 A CN 110719539A
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- Prior art keywords
- microphone
- section
- low noise
- mounting
- connecting section
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- 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.)
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- 238000009434 installation Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000013459 approach Methods 0.000 abstract description 2
- 230000008093 supporting effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
Images
Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
-
- 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
- H04R1/083—Special constructions of mouthpieces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
A microphone bracket mounting adapter applied to low-noise reflection mainly aims to be used as the adapter between a microphone and a microphone bracket when acoustic data are collected, and has the function of reducing noise reflection interference of the bracket to the microphone. The main approach is that the main body part of the microphone is connected with the adapter device firstly, then the adapter device is installed with the support, and finally the connection between the microphone and the support is realized. The connection mode has the advantages that the reflection effect of the support on noise is reduced, and the measurement accuracy of the microphone is further improved. This microphone support mounting adapter device belongs to acoustics and measures technical field.
Description
Technical Field
The invention relates to a low-noise reflection microphone bracket mounting adapter device applied to a high-precision acoustic testing technology, which is used for switching between a microphone and a microphone bracket and has the function of reducing noise reflection interference of the bracket to the microphone. The noise test data acquisition of the high-precision microphone especially belongs to the field of acoustic tests of pneumatic noise, vibration noise and the like.
Background
The acoustic test experiment needs to be completed not only by the influence of external conditions such as a stable and harsh laboratory, experimental measurement equipment, a standard sound source, background noise of a laboratory table and the like, but also by considering the reflection of instruments in the laboratory, particularly the reflection of a microphone bracket is more important and is a part which is often ignored. The microphone is mainly installed through a bracket support, and due to the limitation of the structural size of the microphone, the support mechanism is often closer to the head of the microphone, and the reflection influence on a sound field near the microphone is particularly obvious.
At present, the microphone bracket generally adopts cylindrical support rods, so that the noise reflection to the radiation direction of a sound source is serious. Meanwhile, the base of the support is made thicker, so that the reflection of noise is more obvious.
The invention aims to solve the problem of the reflection effect of a microphone bracket during the acoustic experiment measurement of a complete anechoic room, and is mainly used for reducing the sound wave reflection interference of a supporting device of a microphone on the head of the microphone during the high-precision acoustic experiment measurement, thereby improving the acoustic measurement precision.
Disclosure of Invention
The technical problems solved by the invention are as follows: the device overcomes the defects of the prior art, provides the device which can support and convert the posture of the microphone, reduces the noise reflection interference effect of the support on the microphone, and realizes the effect of the support on reducing the noise reflection interference of the microphone by the characteristics of the extension of the head of the microphone and the beveling of the switching part.
The technical scheme adopted by the invention is as follows:
a microphone stand mounting adapter for low noise reflections, comprising: the microphone mounting device comprises a bracket connecting section, a microphone mounting section and a connecting section;
the annular support connecting section is connected with the microphone mounting section through the slope-shaped connecting section, the microphone mounting section is of a groove-shaped structure, the cross section of the microphone mounting section is a semicircular ring, the cylindrical microphone is placed in the microphone mounting section of the groove-shaped structure and is fixed, and the support connecting section is connected with the microphone support in a bolt connection mode.
Further, the bracket connecting section, the microphone mounting section and the connecting section are integrally formed.
Further, the thickness of the bracket connecting section is the same as that of the connecting section.
Further, the inner diameter R of the microphone mounting section matches the outer diameter of the microphone.
Further, the distance that the head of the microphone extends out of the head of the microphone mounting section is not less than 4R.
Furthermore, the inner surface of the microphone mounting section is made of insulating materials, and sponge vibration absorption materials are laid on the inner surface of the microphone mounting section.
Furthermore, the included angle alpha between the slope-shaped connecting section and the central axis of the microphone mounting section is larger than 120 degrees.
Further, sound absorption materials are laid on the slope of the connecting section.
Furthermore, the head of the microphone mounting section is provided with an inclined chamfer angle theta, so that the noise reflection of the microphone mounting section is reduced.
Further, the inclination angle θ is smaller than 13 °.
Compared with the prior art, the invention has the following advantages:
(1) the invention can meet the requirement of high-precision acoustic acquisition in an acoustic test wind tunnel experiment of a total anechoic chamber, has the characteristic of low noise reflection interference, and can realize the functions of supporting a microphone and adjusting an attitude angle.
(2) The microphone mounting section designed by the invention is processed by adopting a non-metal hard material, and the sponge vibration absorption material is laid on the inner surface of the microphone mounting section, so that the microphone mounting section has the advantages of good insulativity, good vibration absorption performance, convenience in microphone mounting and the like.
(3) The head part of the microphone mounting section part designed by the invention is chamfered, the inclination angle of the head part is less than 13 degrees, and the microphone mounting section has the advantages of reducing noise reflection in the sound source direction, facilitating processing and the like.
(4) The bracket connecting section part designed by the invention is connected with the microphone support in a bolt connection mode, and has the advantages of convenient connection mode positioning, simple angle rotation, high support strength and the like.
(5) The invention realizes the function of the bracket on reducing the noise reflection interference of the microphone by the design of extending the head of the microphone and beveling the switching part.
(6) The device has simple structure and convenient assembly and disassembly, can realize flexible installation of the microphone and the bracket, reduces the influence of noise reflection of the bracket on the microphone, and improves the noise data acquisition quality.
(7) The connection mode of the structure of the invention is as follows: the main part of the microphone is connected with the adapter device firstly, then the adapter device is installed with the support, and finally the microphone is connected with the support. The connection mode has the effect of reducing the reflection of the support to noise and further improving the measurement precision of the microphone. The device has the advantages of good supporting stability, low requirement on installation clearance, convenient posture conversion, convenient disassembly, low noise reflection and the like.
Drawings
Fig. 1 is a schematic view of a microphone stand mounting adapter assembly according to the present invention;
fig. 2 is a schematic view of a microphone stand mounting adapter assembly according to the present invention;
fig. 3 is a schematic view of the assembly of the microphone bracket mounting adapter assembly of the present invention with a bracket;
fig. 4 is a perspective view of a microphone stand mounting adapter apparatus of the present invention;
fig. 5 is a schematic view showing the influence of different microphone stand mounting adapter devices on the noise signal of a microphone.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The invention provides a microphone bracket mounting adapter applied to low noise reflection, which is mainly used for switching between a microphone and a microphone bracket during acoustic data acquisition and has the function of reducing noise reflection interference of the bracket to the microphone. The main approach is that the main body part of the microphone is connected with the adapter device firstly, then the adapter device is installed with the support, and finally the connection between the microphone and the support is realized. The connection mode has the advantages that the reflection effect of the support on noise is reduced, and the measurement accuracy of the microphone is further improved. This microphone support mounting adapter device belongs to acoustics and measures technical field.
As shown in fig. 1, 2, and 3, the invention provides a microphone bracket mounting adapter applied to low noise reflection, which is mainly applied to reduce the interference of the bracket noise reflection on a microphone when high-precision acoustic data is acquired. The microphone mainly comprises a bracket connecting section 1, a microphone mounting section 2 and a connecting section 3;
the annular support connecting section 1 is connected with the microphone mounting section 2 through the slope-shaped connecting section 3, and the thickness of the support connecting section 1 is the same as that of the connecting section 3.
The microphone mounting section 2 is of a groove-shaped structure, the section of the microphone mounting section is a semicircular ring, a cylindrical microphone is placed in the microphone mounting section 2 of the groove-shaped structure and is fixed, and the support connecting section 1 is connected with the microphone support 4 in a bolt connection mode. The connecting mode has the advantages of convenient positioning, simple angle rotation and good supporting effect.
The device simple structure, easy dismounting can realize the nimble installation to microphone and support, reduces the influence of support noise reflection to microphone, improves the noise data acquisition quality. In the prior art, the microphone support 4 and the microphone are generally connected through the cylindrical straight rod, so that the noise reflection is large, and the high-precision acquisition of acoustic data is further influenced. The microphone mounting section 2 is made of a non-metal hard material, and the inner diameter R of the microphone mounting section is matched with the outer diameter of the microphone. The inner surface of the microphone mounting section 2 is insulated, and a sponge vibration absorption material is laid for fixing, insulating and damping functions of the microphone. The inner diameter R of which varies with the diameter of the microphone.
Preferably, the head of the microphone extends beyond the head of the microphone mounting section 2 by a distance of not less than 4R.
Preferably, the head of the microphone mounting section 2 has an inclined chamfer θ to reduce noise reflections from the microphone mounting section 2. The inclination angle theta is smaller than 13 deg. The method has the advantages of reducing the noise reflection in the sound source direction, facilitating the processing and the like. The support has the effect of reducing noise reflection interference of the microphone by the characteristics of extension of the head of the microphone and beveling of the switching part.
Preferably, the bracket attachment section 1, the microphone mounting section 2 and the attachment section 3 are integrally formed.
Preferably, one side of the connecting section 3 is in a shape of an oblique cape, and the other side is a horizontal plane. The included angle alpha between the slope-shaped connecting section 3 and the central axis of the microphone mounting section 2 is more than 120 degrees. The inclined side has the characteristics of low noise scattering and reflection intensity and convenience in processing; the planar side of the connecting section 3 portion may be used for the wiring function of the microphone.
Preferably, the slope of the connecting section 3 is laid with sound absorbing material. The slope is used for reducing the reflection effect on the sound source radiation noise and eliminating the interference of the reflection noise on the microphone.
The working principle is as follows:
the invention provides a microphone bracket mounting adapter device applied to low noise reflection, which is mainly used for switching between a microphone and a microphone bracket when acoustic data is acquired, and has the function of reducing noise reflection interference of the bracket to the microphone; the bracket connecting section 1 of the device is firstly connected with the bracket mounting section 4 through a fastening bolt; then the bracket connecting section 1 and the connecting section 3 are connected in an integrated processing mode; finally, the connecting section 3 is connected with the microphone mounting section 2 in an integrated processing mode; and finally, the support connecting section 1, the microphone mounting section 2 and the connecting section 3 are integrally connected. The device simple structure, easy dismounting can realize the nimble installation to microphone and support, reduces the influence of support noise reflection to microphone, improves the noise data acquisition quality.
In use, the microphone stand mounting adapter is typically rotated 90 degrees counterclockwise as viewed in fig. 2 so that the microphone mounting section 2 is horizontal and the microphone rests above the groove in the microphone mounting section 2. The invention can meet the requirement of high-precision acoustic acquisition in an acoustic test wind tunnel experiment of a total anechoic chamber, has the characteristic of low noise reflection interference, and can realize the functions of supporting a microphone and adjusting an attitude angle.
The embodiment of the invention comprises the following steps:
fig. 4 is a perspective view showing a microphone stand mounting adapter device of the present invention, which is made of a common plastic material, wherein a cavity of an inner diameter of a microphone mounting section 2 is filled with a foam shock-absorbing material. The microphone in fig. 4 has a dimension of 1/4 inches and the microphone head extends a distance of 11cm from the microphone mounting section 2 (in practice, the microphone is shorter and can be accommodated by adding a supporting extension to the end of the microphone). The head of the microphone mounting section 2 is inclined and chamfered by 10 degrees. Fig. 5 shows the influence of different microphone bracket mounting adapter devices on the noise signal of a microphone, and the common microphone bracket mounting adapter (curve 1) can cause frequency spectrum oscillation, and the microphone bracket mounting adapter device (curve 2) in the invention has the advantages of low noise reflection, small sound scattering and the like, so that the acoustic frequency spectrum is smoother and truer.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
Claims (10)
1. The utility model provides a be applied to microphone support installation adapter of low noise reflection which characterized in that includes: the microphone comprises a bracket connecting section (1), a microphone mounting section (2) and a connecting section (3);
the annular support connecting section (1) is connected with the microphone mounting section (2) through the slope-shaped connecting section (3), the microphone mounting section (2) is of a groove-shaped structure, the cross section of the microphone mounting section is a semicircular ring, a cylindrical microphone is placed in the microphone mounting section (2) of the groove-shaped structure and is fixed, and the support connecting section (1) is connected with the microphone support (4) in a bolt connection mode.
2. A microphone stand mounting adaptor for low noise reflections as claimed in claim 1 wherein: the support connecting section (1), the microphone mounting section (2) and the connecting section (3) are integrally formed.
3. A microphone stand mounting adaptor for low noise reflections as claimed in claim 1 wherein: the thickness of the bracket connecting section (1) is the same as that of the connecting section (3).
4. A microphone stand mounting adaptor for low noise reflections as claimed in claim 1 wherein: the inner diameter R of the microphone mounting section (2) is matched with the outer diameter of the microphone.
5. A microphone stand mounting adaptor for low noise reflections as claimed in claim 4, wherein: the distance that the head of the microphone extends out of the head of the microphone mounting section (2) is not less than 4R.
6. A microphone stand mounting adaptor for low noise reflections as claimed in claim 1 wherein: the inner surface of the microphone mounting section (2) is made of insulating materials, and sponge vibration absorption materials are laid on the inner surface.
7. A microphone stand mounting adaptor for low noise reflections as claimed in claim 1 wherein: the included angle alpha between the slope-shaped connecting section (3) and the central axis of the microphone mounting section (2) is more than 120 degrees.
8. A microphone stand mounting adaptor for low noise reflections as claimed in claim 7, wherein: and sound absorption materials are paved on the slope of the connecting section (3).
9. A microphone stand mounting adaptor for low noise reflections as claimed in claim 7, wherein: the head of the microphone mounting section (2) is provided with an inclined chamfer theta to reduce the noise reflection of the microphone mounting section (2).
10. A microphone stand mounting adaptor for low noise reflections as claimed in claim 9 wherein: the inclination angle theta is smaller than 13 deg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013603.4A CN110719539A (en) | 2019-10-23 | 2019-10-23 | Be applied to microphone support installation adapter of low noise reflection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013603.4A CN110719539A (en) | 2019-10-23 | 2019-10-23 | Be applied to microphone support installation adapter of low noise reflection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110719539A true CN110719539A (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911013603.4A Pending CN110719539A (en) | 2019-10-23 | 2019-10-23 | Be applied to microphone support installation adapter of low noise reflection |
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| Country | Link |
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| CN (1) | CN110719539A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1102306A (en) * | 1965-04-23 | 1968-02-07 | Akg Akustische Kino Geraete | A protective cover for a microphone and a microphone comprising such a cover |
| US20110200221A1 (en) * | 2010-02-17 | 2011-08-18 | Kabushiki Kaisha Audio-Technica | Narrow directional microphone |
| CN203558015U (en) * | 2013-10-09 | 2014-04-23 | 吉林大学 | Vehicular microphone mounting bracket |
| CN204539402U (en) * | 2015-04-02 | 2015-08-05 | 中国飞机强度研究所 | A kind of microphone arm for the test of high sound intensity noise circumstance |
| CN106768285A (en) * | 2016-12-21 | 2017-05-31 | 北京强度环境研究所 | A kind of sound field space correlation system safety testing device |
| CN108801452A (en) * | 2018-08-31 | 2018-11-13 | 华南理工大学 | A kind of sound intersity measurement probe |
| CN208333804U (en) * | 2018-05-23 | 2019-01-04 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of sonic transducer support device under high speed inlet flow conditions for wind tunnel test |
| CN109302653A (en) * | 2018-10-17 | 2019-02-01 | 杭州兆华电子有限公司 | A kind of 1/4 inch of high-sensitivity measurement microphone |
| CN210725244U (en) * | 2019-10-23 | 2020-06-09 | 中国航天空气动力技术研究院 | Be applied to microphone support installation adapter of low noise reflection |
-
2019
- 2019-10-23 CN CN201911013603.4A patent/CN110719539A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1102306A (en) * | 1965-04-23 | 1968-02-07 | Akg Akustische Kino Geraete | A protective cover for a microphone and a microphone comprising such a cover |
| US20110200221A1 (en) * | 2010-02-17 | 2011-08-18 | Kabushiki Kaisha Audio-Technica | Narrow directional microphone |
| CN203558015U (en) * | 2013-10-09 | 2014-04-23 | 吉林大学 | Vehicular microphone mounting bracket |
| CN204539402U (en) * | 2015-04-02 | 2015-08-05 | 中国飞机强度研究所 | A kind of microphone arm for the test of high sound intensity noise circumstance |
| CN106768285A (en) * | 2016-12-21 | 2017-05-31 | 北京强度环境研究所 | A kind of sound field space correlation system safety testing device |
| CN208333804U (en) * | 2018-05-23 | 2019-01-04 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of sonic transducer support device under high speed inlet flow conditions for wind tunnel test |
| CN108801452A (en) * | 2018-08-31 | 2018-11-13 | 华南理工大学 | A kind of sound intersity measurement probe |
| CN109302653A (en) * | 2018-10-17 | 2019-02-01 | 杭州兆华电子有限公司 | A kind of 1/4 inch of high-sensitivity measurement microphone |
| CN210725244U (en) * | 2019-10-23 | 2020-06-09 | 中国航天空气动力技术研究院 | Be applied to microphone support installation adapter of low noise reflection |
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