Advanced Member level 1
how should I design the microphone circuit of the tuner? Is it a good idea to use a schmitt trigger inverter to convert the analog wave from the mic into pulses so that a uC can process the signal?
Will the signal from the mic swing from negative voltage to positive voltage like AC or just positive?
Shouldn't the voltage oscillate when sound hit it??
How does the mic produce a negative voltage when the only power I supply is 5V?