Microphone assessment device and assessment method

Abstract

The invention discloses a microphone assessment device and assessment method, mainly solving problems that the current microphone assessment device is high in cost, low in assessment efficiency, poor in versatility and heavy reliance on matching software and external equipment. The microphone assessment device integrates the signal conversion, a power supply module and a control module; the power supply is controlled to configure voltage matched with a microphone to be tested through the control module; the signal conversion module converts a signal generated by the microphone to be tested to a digital signal which can be recognized by the control module and performs digital signal processing and analysis on a digital signal to obtain assessment data of sensitivity, power consumption and a frequency response of the microphone to be tested. The microphone assessment device and assessment method do not need involvement of an external device to realize assessment on various indexes of the microphone, reduces reliance on the external device and connection difficulty. Besides, the assessment mode can be regulated at anytime through a control module, the assessment efficiency is high and the microphone assessment method is applicable to assessments of various types of microphones.

Description

technical field [0001] The invention relates to the field of microphone evaluation, in particular to a microphone evaluation device and evaluation method. Background technique [0002] Parameters such as sensitivity, power consumption, frequency response, and signal-to-noise ratio are important indicators for evaluating microphone performance. Professional audio test equipment can be used to accurately measure and evaluate the above indicators of microphones, but professional test equipment is often expensive and scarce. Most R&D personnel and even customers have little access to it, and the cost of learning and using it is too high. However, the test boards and supporting software provided by some microphone manufacturers only support the evaluation of their proprietary microphones. For different types of microphones (such as analog, I 2 S, PDM, ADM microphones, etc., all types of microphones have different operating frequencies and voltages, etc.), and the evaluation comp...

AI Technical Summary

Problems solved by technology

[0002] Parameters such as sensitivity, power consumption, frequency response, and signal-to-noise ratio are important indicators for evaluating microphone performance. Professional audio test equipment can be used to accurately measure and evaluate the above indicators of microphones, but professional test equipment is often expensive and scarce. Most R&D personnel and even customers have few contact opportunities, and the cost of learning and using is too high

However, the test boards and supporting software provided by some microphone manufacturers only support the evaluation of their proprietary microphones. For different types of microphones (such as analog, I 2 S, PDM, ADM microphones, etc., all kinds of microphones have different operating frequencies and voltages, etc.), and the evaluation compatibility of different indicators is poor

In addition, the calculation and analysis of the collected signals usually needs to be realized with the help of computer software, while other tasks need to be completed by corresponding circuit modules or equipment. The dependence on supporting software and external equipment greatly limits the usage scenarios of the evaluation test device

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