Trying To Draw The Wav Form of captured audio

hi all , im trying to get into audio proccessing at j2me platform
as a start , i made an application that records audio through the phones microhone and after that drawing the bytearray with its wave form on the canvas.
i used the following capture encoding:
"capture://audio?encoding=pcm&rate=8000&bits=8&channels=1"
the application worked great on the emulators...
after i tried the application on my mobile (motorola E-1000)
i realized that my mobile does not support PCM encoding as for audio capturing the device only supports AMR to capture audio :|
so my question what am i suppose to do to draw the WAveForm of the recorded audio if its stored in bytearray encoded as AMR??
do i need to convert it to wav?
is there any other techinque?
any info will be highly welcome!
thanks in advance.

Did u manage to draw waveform of amr file? I've the same task and i 've the same questions: "do i need to convert it to wav? is there any other techinque?"

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