CN113055806A - Acoustic testing system of active noise reduction earphone - Google Patents
Acoustic testing system of active noise reduction earphone Download PDFInfo
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- CN113055806A CN113055806A CN202110438093.6A CN202110438093A CN113055806A CN 113055806 A CN113055806 A CN 113055806A CN 202110438093 A CN202110438093 A CN 202110438093A CN 113055806 A CN113055806 A CN 113055806A
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- simulation
- testing
- active noise
- test
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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
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
- H04R29/003—Monitoring arrangements; Testing arrangements for loudspeakers of the moving-coil type
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention relates to the technical field of earphone acoustic structures, in particular to an acoustic testing system of an active noise reduction earphone, which comprises an audio system, a testing sound card, a testing microphone, a converter and a console, wherein the audio system comprises a testing loudspeaker, the testing loudspeaker comprises a simulation front shell and a simulation rear shell, the simulation front shell is provided with a front cavity, the simulation front shell is also provided with a middle cavity, a pore channel and a leakage hole, a testing space for accommodating a tested resonance damping horn box is arranged in the middle cavity, the inner wall of the middle cavity is provided with a mounting hole position, one end of the leakage hole is communicated with the front cavity, the mounting hole position is provided with an elastic flat pressing pipe body for supporting and being communicated with the interior of the resonance damping horn box, and one end of the flat pressing pipe body is inserted into the mounting hole position. The acoustic test system of the active noise reduction earphone can be used for testing a resonance damping horn box with a special structure, is easy to install and replace the resonance damping horn box to be tested, and simulates the actual earphone assembly environment of a horn.
Description
Technical Field
The invention relates to the technical field of earphone acoustic structures, in particular to an acoustic testing system of an active noise reduction earphone.
Background
The acoustic structure of the active noise reduction earphone seriously affects the comprehensive performance of the earphone and can enter the market by various testing parties.
The production uniformity requirement of the noise reduction earphone is very high, whether the uniformity of leakage when a real person wears can be guaranteed or not in consideration of the design of the earphone, the common method in design is the leakage resistance of an increased front cavity, but the frequency response range can be reduced in such a way, the sensitivity of the earphone is reduced, for solving the problem, the design of a resonance damping horn box is proposed by people, in the horn installation box, the problem is solved by selecting materials and designing the structure of the resonance damping horn box, but a system for performing simulation test on the acoustic performance of the resonance damping horn box cannot be provided in the prior art.
Disclosure of Invention
The invention aims to provide an acoustic test system of an active noise reduction earphone aiming at the defects of the prior art, which can perform simulation test on the acoustic performance of a resonance damping horn box.
In order to achieve the above object, the acoustic testing system of the active noise reduction earphone of the present invention comprises an audio system, a testing sound card connected to the audio system, a testing microphone connected to the testing sound card and collecting testing sound signals, a converter connected to the testing sound card, and a console connected to the converter and outputting control signals and receiving testing sound signals, wherein the audio system comprises a testing speaker, the testing speaker comprises a front simulation shell and a rear simulation shell, the front simulation shell is fastened to the rear simulation shell, the front simulation shell is provided with a front cavity, the front simulation shell is further provided with a middle cavity, a pore passage and a leakage hole, the middle cavity is provided with a testing space for accommodating a tested resonance damping speaker box, the inner wall of the middle cavity is provided with a mounting hole site, one end of the leakage hole is communicated with the front cavity, and the other end of the leakage hole is communicated with the outside, one end of the pore passage is communicated with the waist of the leakage hole, the other end of the pore passage is communicated with the mounting hole position, the mounting hole position is provided with an elastic flat pressing pipe body which is used for supporting and is communicated with the interior of the resonant damping horn box, and one end of the flat pressing pipe body is inserted into the mounting hole position.
Furthermore, the flat pressing pipe bodies are three, and the resonance damping horn boxes to be tested are connected with the simulation front shell in a suspension mode through the three flat pressing pipe bodies.
Furthermore, the elastic modulus of the flat pressing pipe body is 0.1-0.5 GPa.
Furthermore, the middle part of the pore canal is provided with a communicated right-angle section and an arc section, and the radius of the arc section is more than 8 mm; the waist of the leakage hole is communicated with the right-angle section, and the arc section is communicated with the mounting hole position.
Further, the test sound card is a four-channel test sound card.
Further, the test sound card is 24bit wide.
The invention has the beneficial effects that: the acoustic test system of the active noise reduction earphone can be used for testing a resonance damping horn box with a special structure, and the elastic flat pressing pipe body can be elastically bent and deformed, so that the tested resonance damping horn box is easy to install and replace; the leakage hole can be communicated with the interior of the resonance damping horn box through the pore passage and the pressure equalizing pipe body, so that the resistance of the sound film of the horn in the resonance damping horn box is small when the sound film vibrates, and the actual earphone assembly environment of the horn is simulated.
Drawings
Fig. 1 is a schematic view of the connection structure of the present invention.
Fig. 2 is a schematic cross-sectional structure diagram of an audio system of the present invention.
Fig. 3 is a schematic structural diagram of the resonance damping horn box of the present invention.
The reference numerals include:
01-audio system 02-test sound card 03-test microphone
04-converter 05-control console
11-simulated front shell 12-simulated rear shell
21-front chamber 22-test space
3-leakage hole
4-pore canal 41-right angle section 42-circular arc section
5-flat pressing pipe body
6-resonance damping horn box.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
As shown in fig. 1-3, the acoustic testing system of the active noise reduction earphone of the present invention includes an audio system 01, a testing sound card 02 connected to the audio system 01, a testing microphone 03 connected to the testing sound card 02 for collecting testing sound signals, a converter 04 connected to the testing sound card 02, and a console 05 connected to the converter 04 for outputting control signals and receiving testing sound signals, wherein the audio system 01 includes a testing speaker, the testing speaker includes a front simulation shell 11 and a rear simulation shell 12, the front simulation shell 11 is fastened to the rear simulation shell 12, the front simulation shell 11 is provided with a front cavity 21, the front simulation shell 11 is further provided with a middle cavity, a duct 4 and a leakage hole 3, the middle cavity is provided with a testing space 22 for accommodating a tested resonance damping speaker box 6, the inner wall of the middle cavity is provided with an installation hole site, one end of the leakage hole 3 is communicated with the front cavity 21, the other end of the leakage hole 3 is communicated with the outside, one end of the pore 4 is communicated with the waist of the leakage hole 3, the other end of the pore 4 is communicated with the installation hole position, the installation hole position is provided with an elastic flat pressing pipe body 5 which is used for supporting and is communicated with the inside of the resonance damping horn box 6, and one end of the flat pressing pipe body 5 is inserted into the installation hole position. According to the acoustic testing system of the active noise reduction earphone, the actual use environment of the tested resonance damping horn box 6 is simulated by the simulation front shell 11 and the simulation rear shell 12, the acoustic testing system can be used for testing the resonance damping horn box 6 with a special structure, the elastic flat pressing pipe body 5 can be elastically bent and deformed, and the tested resonance damping horn box 6 is easy to install and replace; the leakage hole 3 can be communicated with the interior of the resonance damping horn box 6 through the pore passage 4 and the flat pressing pipe body 5, so that the air pressure in the front cavity 21 and the interior of the resonance damping horn box 6 tends to be balanced, the resistance of the acoustic membrane of the horn in the interior of the resonance damping horn box 6 is small when the horn vibrates, and the actual earphone assembly environment of the simulated horn is realized.
Further, the flat pressing pipe bodies 5 are three, and the tested resonance damping horn boxes 6 are in suspension installation connection with the simulation front shell 11 through the three flat pressing pipe bodies 5. According to the acoustic testing system of the active noise reduction earphone, the resonance damping horn box 6 to be tested is in suspension installation connection with the simulation front shell 11 through the three flat pressing pipe bodies 5, so that the interference of the simulation front shell 11 on the resonance of the resonance damping horn box 6 to be tested in a sound wave environment can be reduced, and the accuracy of performance measurement of the resonance damping horn box 6 is improved.
Furthermore, the elastic modulus of the flat pressing pipe body 5 is 0.1-0.5 GPa. The flat pressing pipe body 5 can further reduce the interference of the simulation front shell 11 on the resonance of the tested resonance damping horn box 6 in the sound wave environment, and further improve the accuracy of the performance measurement of the resonance damping horn box 6.
Specifically, the middle part of the pore passage 4 is provided with a right angle section 41 and an arc section 42 which are communicated, and the radius of the arc section 42 is larger than 8 mm; the waist of the leakage hole 3 is communicated with the right-angle section 41, and the circular arc section 42 is communicated with the mounting hole. According to the acoustic testing system of the active noise reduction earphone, the pore channel 4 is arranged on the wall of the simulation front shell 11, and the actual assembly and use environment of the resonance damping horn box 6 is simulated.
Specifically, the test sound card 02 is a four-channel test sound card 02. The acoustic test system of the active noise reduction earphone can simultaneously test the stereo performance of the loudspeakers in the two resonance damping loudspeaker boxes 6.
Specifically, according to the acoustic test system of the active noise reduction earphone, the test sound card 02 is 24bit wide, and the signal-to-noise ratio and the sensitivity meet the noise reduction test requirements.
In conclusion, the present invention has the above-mentioned excellent characteristics, so that it can be used to enhance the performance of the prior art and has practicability, and becomes a product with practical value.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (6)
1. The utility model provides an acoustics test system of earphone of making an uproar falls in initiative, including audio system, with the test sound card that audio system links to each other, with the test microphone that the test sound card links to each other, gathers the test sound signal, with the converter that the test sound card is connected, and with the converter is connected, output control signal and is received the control cabinet of test sound signal, its characterized in that: the audio system includes the test speaker, and the test speaker is including preceding shell of simulation and simulation backshell, shell and simulation backshell lock before the simulation, the shell is provided with the ante-chamber before the simulation, the shell still is provided with lumen, pore and leakage hole before the simulation, be provided with the test space that is used for the holding to be surveyed resonance damping loudspeaker box in the lumen, the inner wall of lumen is provided with the installation hole site, and the one end and the ante-chamber in leakage hole switch on, and the other end and the external world in leakage hole switch on, and the one end in pore switches on with the waist in leakage hole, and the other end and the installation hole site in pore switch on, and the installation hole site is provided with and is used for supporting and switch on with inside, the elasticity concora crush body that switches on of resonance damping.
2. A feed forward active noise reducing headphone acoustic structure as set forth in claim 1, wherein: the flat pressing pipe bodies are three, and the resonance damping horn boxes to be tested are connected with the simulation front shell in a suspension mode through the three flat pressing pipe bodies.
3. A feed forward active noise reducing headphone acoustic structure as set forth in claim 1, wherein: the elastic modulus of the flat pressing pipe body is 0.1-0.5 GPa.
4. A feed forward active noise reducing headphone acoustic structure as set forth in claim 1, wherein: the middle part of the pore canal is provided with a communicated right-angle section and an arc section, and the radius of the arc section is more than 8 mm; the waist of the leakage hole is communicated with the right-angle section, and the arc section is communicated with the mounting hole position.
5. A feed forward active noise reducing headphone acoustic structure as set forth in claim 1, wherein: the test sound card is a four-channel test sound card.
6. A feed forward active noise reducing headphone acoustic structure as set forth in claim 1, wherein: the test sound card is 24bit wide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110438093.6A CN113055806A (en) | 2021-04-22 | 2021-04-22 | Acoustic testing system of active noise reduction earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110438093.6A CN113055806A (en) | 2021-04-22 | 2021-04-22 | Acoustic testing system of active noise reduction earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113055806A true CN113055806A (en) | 2021-06-29 |
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ID=76520293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110438093.6A Withdrawn CN113055806A (en) | 2021-04-22 | 2021-04-22 | Acoustic testing system of active noise reduction earphone |
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| Country | Link |
|---|---|
| CN (1) | CN113055806A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106454674A (en) * | 2016-09-12 | 2017-02-22 | 歌尔股份有限公司 | Testing tooling |
| CN112312257A (en) * | 2020-09-08 | 2021-02-02 | 深圳市逸音科技有限公司 | Intelligent 3D earphone of making an uproar falls in initiative digit |
| CN112312296A (en) * | 2020-09-08 | 2021-02-02 | 深圳市逸音科技有限公司 | ANC earphone acoustic test system |
-
2021
- 2021-04-22 CN CN202110438093.6A patent/CN113055806A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106454674A (en) * | 2016-09-12 | 2017-02-22 | 歌尔股份有限公司 | Testing tooling |
| CN112312257A (en) * | 2020-09-08 | 2021-02-02 | 深圳市逸音科技有限公司 | Intelligent 3D earphone of making an uproar falls in initiative digit |
| CN112312296A (en) * | 2020-09-08 | 2021-02-02 | 深圳市逸音科技有限公司 | ANC earphone acoustic test system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210629 |