>>We have a zillion WAV files that have both voice converstation and DTMF tones in it. Obviously, WAV files are not the smallest sound files - so I'd like to convert the WAV files to some other format. I haven't messed with it much, the problem is the gizmo I use to pull the DTMF tones out of the audio files seems to fail when I convert (compress) the WAV files.
>>Anyone have any sugestions on a CODEC I should try that will keep my DTMF tones?
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>Have you tried converting the WAV files to MP3? I think you might have a hard time compressing the WAV files and keep the DTMF tones. Compression usually means some type of loss of information. If I recall correctly DTMF tones are sine waves and your "gizmo" is probably pretty sensitive i.e. high sampling rate.
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>Do you have any specs for your "gizmo"?

Well the gizmo is just an activex control that reads the DTMF tones...I didn't write that part of the app and I forget now which activex control was used (I can find out though) - but we can use whatever we want to read these DTMF tones. I tried various bitrates and such with MP3's, but it just doesn't seem to work very well.
I would think there would be an audio CODEC specificly designed for what I'm trying to do here...one that does compression (or at least gives me smaller files) that doesnt kill my DTMF tones....