CN213028551U - A noise elimination sound-proof box for acoustics test - Google Patents
A noise elimination sound-proof box for acoustics test Download PDFInfo
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- CN213028551U CN213028551U CN202022107446.8U CN202022107446U CN213028551U CN 213028551 U CN213028551 U CN 213028551U CN 202022107446 U CN202022107446 U CN 202022107446U CN 213028551 U CN213028551 U CN 213028551U
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Abstract
The utility model discloses a noise elimination sound-proof box for acoustics test, including frame, sound-proof part. The sound insulation parts are respectively arranged on each surface of the frame and are matched with the frame to form a sealed test cavity. The cavity of the test cavity is cuboid for accommodating a tested object and a test sound source, and the width and the height of the test cavity are equal. This embodiment is through setting up the frame to set up the cooperation of sound-proof part and form a test chamber that is used for holding testee and test sound source on the frame, this test chamber's width equals with the height. The width and the height of the box body are set to be equal to the distance between a sound source and a tested object and sound absorption cotton when the test is guaranteed, reflection interference caused by unequal distances is avoided, and the problem that reverberation interference exists in an existing mute box is solved.
Description
Technical Field
The utility model belongs to the technical field of the amortization, especially, relate to a noise elimination sound-proof box for acoustics test.
Background
With the function of the electronic product becoming more and more complex, the testing work of the electronic product becomes more and more cumbersome. Audio testing is an important component of functional testing of electronic products. In order to be able to test the audio performance of the product better and more accurately, the testing process is preferably arranged to be performed in an environment that is not affected by external conditions. It is desirable to create a sound-measuring cell that is completely isolated from external noise so that the external noise does not adversely affect the testing process.
Existing silence boxes on the market adopt an iron sheet as a box body, a door is opened on the front side, the existing silence boxes are usually square or cuboid, an inner shell and an outer shell are made of cold-rolled steel plates through stamping, welding, acid washing and spraying, and a composite sound insulation partition plate is adopted inside the existing silence boxes to serve as a sound insulation material.
However, in the conventional sound box, the distances from the sound source and the measured object to the box body are inconsistent, and if the sound is not well attenuated, directional reverberation interference can be generated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a noise elimination sound-proof box for acoustic test to there is the problem of reverberation interference in solving current silence case.
In order to solve the above problem, the technical scheme of the utility model is that:
the utility model discloses a noise elimination sound-proof box for acoustics test, include:
a frame;
the sound insulation parts are respectively arranged on each surface of the frame and are matched with the frame to form a sealed test cavity; the cavity of the test cavity is cuboid and used for accommodating a tested object and a test sound source;
the width and the height of the test cavity are equal.
The utility model discloses a noise elimination sound-proof box for acoustic test, the length in test chamber is greater than the twice the width in test chamber.
The utility model discloses a noise elimination sound-proof box for acoustic test is located the sound-proof part of frame upper surface is the open-close board for the opening and shutting is placed the measured object with the test sound source.
The utility model discloses a noise elimination sound-proof box for acoustic test still includes the sealing member, locates the sound-proof part with the junction of frame is used for sealing the test chamber.
The utility model discloses a noise elimination sound-proof box for acoustic test still includes the structure, install in on the frame with the sound-proof part with the junction of frame.
The utility model discloses a noise elimination sound-proof box for acoustics test, sound-proof part includes by outer and interior outer wrapper sheet, soundproof cotton, acoustical panel, the sound cotton of inhaling that makes up in proper order.
The utility model discloses a noise elimination sound-proof box for acoustic test, inhale the cotton orientation of sound be equipped with the toper structure on the side in test chamber.
The utility model discloses a noise elimination sound-proof box for acoustic test, the acoustical panel is the high density sponge.
The utility model discloses a noise elimination sound-proof box for acoustics test, noise elimination board thickness is not less than 30cm, soundproof cotton thickness is greater than 30 cm.
The utility model discloses a noise elimination sound-proof box for acoustic test, the height that the toper was constructed is not less than 30 cm.
The utility model discloses a noise elimination sound-proof box for acoustic test still includes the handle, the handle is located open-close board is last, is used for opening open-close board.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
1. the utility model discloses an embodiment is through setting up the frame to set up the cooperation of sound-proof part and form a test chamber that is used for holding testee and test sound source on the frame, the width and the height in this test chamber equal. The width and the height of the box body are set to be equal to the distance between a sound source and a tested object and sound absorption cotton when the test is guaranteed, reflection interference caused by unequal distances is avoided, and the problem that reverberation interference exists in an existing mute box is solved.
2. The utility model discloses an embodiment sets up to be greater than the twice width through the length with the test chamber, can guarantee can not receive the interference when test stage sound is propagated, effectively guarantees the authenticity of test result.
Drawings
Fig. 1 is a schematic view of a noise elimination and sound insulation box for acoustic testing of the present invention;
fig. 2 is a schematic view of the sound insulation part of the noise elimination sound insulation box for acoustic test of the present invention.
Description of reference numerals: 1: a frame; 2: a measured object; 3: testing the sound source; 4: an outer wrapping sheet; 5: sound insulation cotton; 6: a sound-absorbing panel; 7: and (5) sound absorption cotton.
Detailed Description
The sound attenuation and insulation box for acoustic testing provided by the present invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims.
Referring to fig. 1 and 2, in one embodiment, a sound attenuation and isolation box for acoustic testing includes a frame 1, an isolation section.
The sound insulation parts are respectively arranged on each surface of the frame 1 and are matched with the frame 1 to form a sealed test chamber. The cavity shape of the test cavity is cuboid for accommodating a tested object 2 and a test sound source 3, and the width and the height of the test cavity are equal.
In the embodiment, the frame 1 is arranged, and the sound insulation part is arranged on the frame 1 to cooperate with each other to form a test chamber for accommodating the object to be tested 2 and the test sound source 3, and the width and the height of the test chamber are equal. The width and the height of the box body are set to be the same as the distance between a sound source and the object 2 to be tested and the sound absorption cotton 7 during testing; during testing, the test sound source 3 and the tested object 2 are placed just opposite to the horizontal direction, the sound emitting point of the test sound source 3 and the sound receiving point of the tested object 2 are located at the center point of width and height, sound is sent in a scattering mode and is evenly emitted to the periphery, so that the width and the height are the same, the time of the sound reaching each wall surface of the test cavity can be guaranteed to be the same, even reverberation exists if reverberation exists, the acoustic test is not affected, therefore, reflection interference caused by unequal distance is avoided, and the problem that reverberation interference exists in the existing mute box is solved.
The concrete structure of the sound-deadening and sound-insulating box of the present embodiment will be further described below:
in this embodiment, the length of test chamber is greater than the width of twice test chamber, can guarantee can not receive the interference when test stage sound propagates, effectively guarantees the authenticity of test result. Preferably, the horizontal distance between the test sound source 3 and the MIC center point of the object 2 to be tested is more than 1 m.
Specifically, the frame 1 may be a cuboid, and the frame 1 may be made of hard materials such as aluminum profiles, angle steels, battens, and the like.
In the present embodiment, the sound insulation portion on the upper surface of the frame 1 is a cut-and-open plate for cutting and placing the test object 2 and the test sound source 3. And the outer surface of the opening plate is provided with a handle for opening the opening plate and placing the tested object 2 into the testing cavity. Place the position of open-close plate at holistic upper surface to place test sound source 3 and testee 2 in the testing process, the mode that opens and shuts also is different from current front panel mode that opens and shuts, has mainly solved the problem of putting of testee 2 and test sound source 3.
In this embodiment, the sound-damping and sound-insulating box further includes a sealing member provided at a junction of the sound-insulating portion and the frame 1 for sealing the test chamber. The sealing element may be, for example, a sealing compound, which fills the mounting gap between the frame 1 and the other components to ensure the tightness of the test chamber.
In this embodiment, the noise elimination sound insulation box further comprises a structural member, which is mounted on the frame 1 and at the joint of the sound insulation part and the frame 1, and is used for reinforcing the structure of the frame 1 and also reinforcing the connection structure between the frame 1 and the sound insulation part, so that the stability of the formed test cavity meets the requirement.
In this embodiment, the sound insulation portion includes an outer panel 4, soundproof cotton 5, a sound insulation panel 6, and sound insulation cotton 7, which are combined in this order from the outside to the inside. The sound absorbing cotton 7 is located at the innermost side.
Wherein, the side of the sound absorption cotton 7 facing the test cavity is provided with a conical structure, so as to better absorb the reflection interference brought by the test sound source 3. The sound-absorbing plate 6 may be made of high-density sponge, but in other embodiments, other sound-absorbing materials may be used, and are not limited herein.
In a specific structure, the thickness of the sound-absorbing plate 6 can be selected to be not less than 30cm, and the sound-absorbing plate is mainly used for isolating sound from the outside and the inside of the box body in a test process; the soundproof cotton 5 is preferably more than 30cm thick for further isolating sound from the inside; the height of the conical structure is not less than 30cm for absorbing the reverberation inside the box body.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (11)
1. A sound attenuation and sound insulation box for acoustic testing, characterized by comprising:
a frame;
the sound insulation parts are respectively arranged on each surface of the frame and are matched with the frame to form a sealed test cavity; the cavity of the test cavity is cuboid and used for accommodating a tested object and a test sound source;
the width and the height of the test cavity are equal.
2. The muffling sound isolation enclosure for acoustic testing of claim 1, wherein the length of the test chamber is greater than twice the width of the test chamber.
3. The muffling and sound-insulating box for acoustic testing according to claim 1, wherein the sound-insulating portion on the upper surface of the frame is a cut-open plate for cutting and placing the object to be tested and the test sound source.
4. The muffling sound isolation enclosure for acoustic testing of claim 1, further comprising a seal disposed at a junction of the sound isolation portion and the frame for sealing the test chamber.
5. The muffling and sound-insulating box for acoustic testing of claim 1, further comprising structural members mounted on the frame and at the junction of the sound-insulating portion and the frame.
6. The muffling and sound-insulating box for acoustic testing according to claim 1, wherein the sound-insulating part comprises an outer plate, soundproof cotton, a sound-insulating plate and sound-absorbing cotton which are sequentially combined from outside to inside.
7. The sound-damping and sound-insulating box for acoustic testing according to claim 6, characterized in that the side of the sound-absorbing cotton facing the test chamber is provided with a conical configuration.
8. The muffling and sound-insulating box for acoustic testing of claim 6, wherein the muffling plate is a high density sponge.
9. The muffling and sound-insulating box for acoustic testing according to claim 6, wherein the thickness of the muffling plate is not less than 30cm, and the thickness of the soundproof cotton is more than 30 cm.
10. The muffling sound isolation box for acoustic testing of claim 7, wherein the height of the conical configuration is not less than 30 cm.
11. The sound dampening and insulating box for acoustic testing as claimed in claim 3, further comprising a handle provided on the opening plate for opening the opening plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022107446.8U CN213028551U (en) | 2020-09-23 | 2020-09-23 | A noise elimination sound-proof box for acoustics test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022107446.8U CN213028551U (en) | 2020-09-23 | 2020-09-23 | A noise elimination sound-proof box for acoustics test |
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| CN213028551U true CN213028551U (en) | 2021-04-20 |
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| CN202022107446.8U Active CN213028551U (en) | 2020-09-23 | 2020-09-23 | A noise elimination sound-proof box for acoustics test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782002A (en) * | 2021-09-01 | 2021-12-10 | 上海深聪半导体有限责任公司 | Voice recognition test method and system based on reverberation simulation |
| CN114339572A (en) * | 2021-12-15 | 2022-04-12 | 上海深聪半导体有限责任公司 | Microphone array production and measurement method |
-
2020
- 2020-09-23 CN CN202022107446.8U patent/CN213028551U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782002A (en) * | 2021-09-01 | 2021-12-10 | 上海深聪半导体有限责任公司 | Voice recognition test method and system based on reverberation simulation |
| CN113782002B (en) * | 2021-09-01 | 2023-07-04 | 深聪半导体(江苏)有限公司 | Speech recognition testing method and system based on reverberation simulation |
| CN114339572A (en) * | 2021-12-15 | 2022-04-12 | 上海深聪半导体有限责任公司 | Microphone array production and measurement method |
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Address after: Unit G4-202-059, Artificial Intelligence Industrial Park, No. 88 Jinjihu Avenue, Suzhou Industrial Park, Suzhou Area, China (Jiangsu) Pilot Free Trade Zone, Suzhou City, Jiangsu Province, 215124 Patentee after: Shencong Semiconductor (Jiangsu) Co.,Ltd. Address before: 200232 room 3712, 3 / F, 2879 Longteng Avenue, Xuhui District, Shanghai Patentee before: Shanghai shencong Semiconductor Co.,Ltd. |
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| CP03 | Change of name, title or address |