AVAudioPlayer - Metering - Want to build a waveform (graph)

Question

I need to build a visual graph that represents voice levels (dB) in a recorded file. I tried to do it this way:

NSError *error = nil;
AVAudioPlayer *meterPlay         


        

Answer 1

I haven't used it myself, but Apple's avTouch iPhone sample has bar graphs powered by AVAudioPlayer, and you can easily check to see how they do it.