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A kind of sound-proof sound box and the test device using the sound-proof sound box and its test method

A test device and soundproof box technology, applied in electrical components and other directions, can solve problems such as difficult to achieve SNR testing of microphone products, and achieve the effects of preventing damage, eliminating interference, and reducing impact.

Active Publication Date: 2018-04-17
GOERTEK INC
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Problems solved by technology

[0003] The invention provides a soundproof box, a test device and a test method using the soundproof box, so as to solve the problem that it is difficult to test the SNR of microphone products with SNR signal-to-noise ratio ≥ 70 in laboratories and production lines

Method used

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  • A kind of sound-proof sound box and the test device using the sound-proof sound box and its test method
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  • A kind of sound-proof sound box and the test device using the sound-proof sound box and its test method

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] figure 1 and figure 2 A structural schematic diagram of the soundproof box provided by the present invention is given. The soundproof box includes an outer box body 41, an inner box body 42, and a vibration isolation pad 43. The vibration isolation pad 43 supports the inner box body 42 nested in the In the outer box 41, a cavity 411 is formed between the inner box 42 and the outer box 41, and the cavity in the inner box 42 is a test inner cavity 421, and the outer box 41 An outer box body door 412 is included, and the inner box body 42 includes an inner box body door 422, and both the outer box body door 412 and the inner box body door 422 are arranged in a T shape. In addition, the soundproof box also includes an air outlet ...

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Abstract

The invention provides a sound-insulating box, a testing device applying the same and a testing method thereof. The sound-insulating box adopts a structure with nestification of an outer box body and an inner box body; a vibration-insulating pad is used for supporting between the two box bodies, and can eliminate the influence of the physical vibration of the outer box body on the inner box body effectively. When the sound-insulating box is in use, a cavity between the inner box body and the outer box body is in a vacuum state, sound can not spread in vacuum, so that the sound outside can be effectively insulated; meanwhile, due to a vibration-reducing locking chain and a vibration-reducing pad of the testing device, the influence of vibration on the sound-insulating box is also effectively reduced, so that the purpose of testing the SNR (Signal-to-Noise Ratio) of a microphone is well realized; in addition, during testing, the cavity between the inner box body and the outer box body of the sound-insulating box is vacuumized instead of directly putting a product in the vacuum environment for testing, so that the damage of vacuumizing to a vibration diaphragm of the microphone product can be effectively prevented; the testing device also can be used for laboratories and production lines to realize testing for the performance parameters such as sensitivity, background noise and THD (Total Harmonic Distortion) of microphones.

Description

technical field [0001] The invention relates to the technical field of electronic product testing, in particular to a sound insulation and a testing device and a testing method using the soundproof box. Background technique [0002] With the increase of consumer electronics functions, the performance requirements of the microphone monomer are getting higher and higher, and the SNR requirement of the microphone has reached 70dB. At present, it is difficult for various electroacoustic laboratories and production lines in the industry to achieve a microphone with an SNR signal-to-noise ratio ≥ 70 Product SNR test. Contents of the invention [0003] The invention provides a sound-proof box, a test device and a test method using the sound-proof box, so as to solve the problem that it is difficult for laboratories and production lines to test the SNR of microphone products with an SNR signal-to-noise ratio ≥ 70. [0004] In order to achieve the above object, the embodiment of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R29/00
Inventor 刘德华
Owner GOERTEK INC
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