Patent ID: 9693150
Date: 2017-06-27
CPC Classifications: H04R

Claim:
1. A microphone, comprising: an audio detection module having a vibration film configured to output a capacitance signal by vibrating by audio introduced from an exterior and a piezoresistive element configured to output a piezoresistive signal by a sound pressure of the audio; and a semiconductor chip having a single amplifier electrically connected to the audio detection module to receive both the capacitance signal and the piezoresistive signal from the audio detection module and configured to amplify the capacitance signal and the piezoresistive signal to an electrical signal, wherein the single amplifier includes: an input terminal configured to receive an input of the capacitance signal; a first resistor connected to the input terminal and connected to the piezoresistive element; an output terminal configured to amplify and output the capacitance signal and the piezoresistive signal to the electrical signal; and a second resistor connected to the input terminal and the output terminal and connected to the piezoresistive element.