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Does Android have a similar method to the iPhone AVAudioPlayer's averagePowerForChannel?
I want to get an average reading of the amplitude of as a value.
I don’t think there is a built-in function but you can calculate it yourself.
To do this, calculate the root-mean-square average of continuous samples.
The following links should be helpful to you as they contain the full source code to two excellent Android sound related projects.
Ringdroid
Rehearsal Assistant