Microphone testing device, system and testing method

Abstract

The invention discloses a microphone testing device, system and testing method, mainly solving problems that the current microphone testing device is high in cost, low in testing efficiency and poor in versatility. The microphone testing device comprises at least one microphone interface, a signal conversion module, a power supply module and a control module; the signal conversion module, the power supply module and the control module are integrated; the power supply module is controlled by the control module to configure voltage matched with the microphone to be tested; a signal generated by the microphone to be tested is converted to a digital signal through the signal conversion module, wherein the digital signal can be recognized by the control module. The microphone testing device, system and testing method reduces dependence on the external device and connection difficulty, realizes digital signal processing through a control module, eliminates the DSP chip and has a low cost. Besides, the microphone testing device, system and testing method can regulate a testing mode at any time, have high testing efficiency and are applicable to various types of microphone testing.

Description

Technical field [0001] The invention relates to the field of microphone testing, in particular to a microphone testing device, system and testing method. Background technique [0002] Parameters such as sensitivity, power consumption, frequency response, and signal-to-noise ratio are important indicators for evaluating microphone performance. Whether it is a production line workshop or customer quality inspection, accurate and efficient testing of the above indicators of the microphone is required. The existing approach is to use professional audio testers or develop test circuits for specific microphone types. The former is expensive and has low test efficiency, which cannot meet the needs of large-scale and automated testing, while the latter has poor versatility and is suitable for different types of microphones ( For example, simulation, I 2 S, PDM, ADM microphones, etc., all types of microphones have different operating frequencies and voltages, etc.) Different test compatib...

AI Technical Summary

Problems solved by technology

The existing practice is to use a professional audio tester or develop a test circuit for a specific microphone type. The former is expensive and the test efficiency is low, and cannot meet the needs of large-scale and automated testing, while the latter has poor versatility and is suitable for different types of microphones ( e.g. analog, I 2 S, PDM, ADM microphones, etc., various types of microphones have different operating frequencies and voltages, etc.) The compatibility of different tests is poor

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