I am trying to amplify audio from an electret microphone using an LM386 audio amplifier board.
However, the output of the board is very grainy and the audio is distorted.
Is there any way I can improve the audio quality, or the microphone gain?
I have used a 27k resistor from mic+ to a 9v battery to power the microphone.
I will attach the diagram of what I have done below.
Edit - I have now looked into using a coupling capacitor on the input but there are a few schematics and I am still unsure. I have attached the images below.