Television accompanying sound phase test device and test method

Abstract

The invention discloses a television accompanying sound phase test device and a test method. The test device comprises a signal source input module, a signal processing module, a sound picking comparison module and a display processing module, wherein the accompanying sound signals of the preset frequency are input to a main board of a television to be tested to be pretreated by the signal sourceinput module; the signal processing module converts the pretreated accompanying sound signals into alternating current signals; the alternating current signals are amplified and output into a loudspeaker of a television to be tested; sound signals given out by a television loudspeaker to be tested are collected through the sound picking comparison module; the sound signals are converted into electric signals to be tested; the electric signals to be tested are subjected to waveform phase comparison with the preset reference signal; then, the comparison result is output to the display processingmodule; the display processing module outputs the corresponding indication information according to the comparison result. The device and the method effectively solve the problem of low automation degree, low accuracy and low efficiency in the existing manual detection method. The factory delivery quality of the television and the accompanying sound phase test efficiency are obviously improved.

Description

technical field [0001] The invention relates to the technical field of home appliances, in particular to a TV audio phase testing device and testing method. Background technique [0002] In the manufacturing industry, ensuring product quality, reducing the labor intensity of operators, and improving production efficiency are the goals pursued by process technicians. Taking the production of existing color TV sets as an example, it is necessary to test the sound phase of the TV to be shipped out of the factory. At present, this test and inspection mainly relies on training skilled quality inspection personnel during the production process to identify and detect the sound through the human ear. If it is recognized as a frequency response That is to judge good products. If it is recognized as reverberation, it will be judged as bad. Undoubtedly, there are many uncertain factors in this inspection method, such as ambient environment interference, long-term physical fatigue, miss...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies of the prior art above, the purpose of the present invention is to provide a TV audio phase testing device and testing method, which can realize automatic TV audio phase error-free detection by accurately picking up the sound and converting it to compare waveforms, effectively It solves the problems of low automation, low accuracy and low efficiency in the existing manual detection methods, and significantly improves the factory quality of TV sets and the efficiency of audio phase testing

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