android AudioRecord amplitude reading from MIC

Question

I am trying to record the sound from the MIC and draw a live graph. I am able to record and draw the graph. The problem is the values that are recorded using the code below are

Answer 1

Try using a higher sampling rate. The maximum is 48000, but 44100 is standard.

Also, it is possible the microphone is just recording background noise.

Answer 2

For anyone else looking for a way to do this, check out Samsung's fantastic example complete with source code