Method and device for calibrating sensitivity of microphone
A calibration method, microphone technology, applied in the direction of electrical components, etc., to achieve the effect of reducing cost, wide application range, and eliminating pin connection
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[0049] The features and advantages of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0050] In the microphone calibration method proposed by the present invention, the gain of the amplifier and / or the bias voltage are adjusted by setting the memory, thereby adjusting the sensitivity of the microphone to a specific value, thereby achieving the purpose of calibrating the sensitivity of the microphone. The core idea is that no additional pins are required to set the memory, but the calibration control signal is provided by the sound source set outside the microphone. The calibration control circuit converts the sound signal detected by the microphone into a calibration control signal. According to the control signal Set the memory to complete the calibration process of the microphone.
[0051] A kind of microphone calibration method according to the idea of the present invention such as image 3 As shown, it includes th...
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