The special wav49 ms hack doesn't produce correct WAV files on output.
they cannot be played back on windows media player nor winamp.
for example a typcial voicemail message with 9 seconds stops after 6
seconds playback with the error: "invalid fileformat (Error=8004022F)"
attached is such a file.
in the meantime I use the uncompressed wav format and
postprocess this in voicemail2 with
sox <input.gsm> -a <output.wav>
which produces fine compressed MS ADPCM WAV files on unix, and they are
only the double size of GSM or wav49.
--
Reini Urban - Programmer - http://inode.at
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