Acoustic Calibration Test Fixture
A test fixture and acoustic technology, which is applied in the electronic field, can solve the problems of complicated calibration process, high cost, and no requirement for the use of adapters, etc., and achieve the effect of being easy to use and suitable for production
Active Publication Date: 2019-01-29
ZILLTEK TECH SHANGHAI +1
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Problems solved by technology
[0002] In order to check whether the microphone product meets the requirements of R&D design, production assembly or user's use, the microphone needs to pass the corresponding electrical performance test and experiment, among which, the acoustic calibration of the microphone is one of the key inspection items, and it needs to pass the corresponding acoustic calibration method, the traditional microphone calibration method needs to configure a special anechoic room; through the anechoic room to provide a dedicated test environment without noise interference and sound echo, the cost is high and the calibration process is complicated
[0003] In the prior art, there are various types of portable acoustic calibrator that can measure the sound pressure sensitivity of the microphone. When this portable acoustic calibrator is in use, the microphone is inserted directly or through a corresponding adapter into the acoustic Just adjust the coupling cavity of the calibrator, and you can start the measurement, which is convenient to use. However, the existing adapters are mainly used for the connection of traditional analog microphones. There is no suitable adapter for the new microelectromechanical system microphones. Requirements
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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0022] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0024] refer to figure 1 , figure 2 , image 3 , Figure 4 , a test fixture for acoustic calibration, used ...
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The invention relates to the field of electronic technology, especially to a test tool for acoustic calibration. A microphone to be tested is coupled to an acoustic calibrator via the test tool. The test tool comprises a tool body, and the tool body comprises a first part and a second part, wherein the first part is detachably connected with the second part, a hole through which sound can enter is formed in the first part, the first part is internally provided with a cavity, and the microphone to be tested is placed in the cavity. The test tool can be applied to MEMS microphones, can implement acoustic calibration in the free field, and is suitable for production and convenient to use.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to a test fixture. Background technique [0002] In order to check whether the microphone product meets the requirements of R&D design, production assembly or user's use, the microphone needs to pass the corresponding electrical performance test and experiment, among which, the acoustic calibration of the microphone is one of the key inspection items, and it needs to pass the corresponding acoustic calibration method, the traditional microphone calibration method needs to configure a special anechoic room; through the anechoic room to provide a dedicated test environment without noise interference and sound echo, the cost is high and the calibration process is complicated. [0003] In the prior art, there are various types of portable acoustic calibrator that can measure the sound pressure sensitivity of the microphone. When this portable acoustic calibrator is in use, the micro...
Claims
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IPC IPC(8): H04R29/00
Inventor 叶菁华
Owner ZILLTEK TECH SHANGHAI