Loudspeaker test device

Abstract

The invention discloses a loudspeaker test device comprising a cavity of which one end is open and a piston which is slidably matched in the cavity. One side, which is opposite to the piston, in the cavity is provided with a positioning base which is used for fixing and sealing a single loudspeaker. The position, which is corresponding to the positioning base, of the cavity is also provided with sound holes which are matched with the single loudspeaker. The cavity is also provided with a damping structure through which the outside and the internal part of the cavity are communicated. According to the test device, the objective of adjusting volume can be achieved by moving the position of the piston in the cavity so that the acoustic performance of the single loudspeaker under different volumes can be tested, and test accuracy and consistency can be guaranteed. According to the test device, the structure of the loudspeaker module group is formed by the piston, the cavity, the sound holes and the damping structure so that the final detection result is enabled to further represent the acoustic performance of the single loudspeaker existing in the form of the module group.

Description

technical field [0001] The present invention relates to a test fixture, and more particularly, the present invention relates to a test device for testing the acoustic performance of a loudspeaker. Background technique [0002] In the field of electronic technology, speaker acoustic performance testing is an important process. The usual practice is to place the loudspeaker unit in a closed cavity for a series of sound tests. With the development of science and technology, people have higher and higher requirements for the acoustic performance of speakers. Therefore, in order to meet the brand-new needs of consumers for speakers, it is necessary to test the corresponding acoustic performance of the speakers in closed environments with different volumes. At present, the volume of the cabinet used in the test is fixed, and different volume tests need to be replaced with different cabinets, which makes the test efficiency low and the cost high; and the difference between speake...

AI Technical Summary

Problems solved by technology

At present, the volume of the cabinet used in the test is fixed, and the test of different volumes needs to be replaced with different cabinets, which makes the test efficiency low and the cost high; and the difference between speaker batches cannot be avoided, which affects the test accuracy.

[0003] In modern electronic products, the speaker is usually installed in the external terminal shell in the form of a speaker module, but the traditional speaker test is to place the speaker unit in a closed test environment, because the environment of the speaker unit and the speaker module itself is different , therefore, the results obtained by this test method cannot accurately express the acoustic parameters of the speaker module

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