I have a strange request. I have some .Wav/.Aiff files of a 9600baud modem audio output (what's heard through the speaker). Is it possible to demodulate these into serial data internally (via Software) without running them back through a modem?

Do you know of any libraries or code that anyone has shared that is headed in this direction?

Thanks for any advice!

fshrking

This message was edited by ninchagora at 2004-8-22 23:25:24

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This message was edited by ninchagora at 2004-8-22 1:25:41

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: I have a strange request. I have some .Wav/.Aiff files of a 9600baud modem audio output (what's heard through the speaker). Is it possible to demodulate these into serial data internally (via Software) without running them back through a modem?
:
: Do you know of any libraries or code that anyone has shared that is headed in this direction?
:
: Thanks for any advice!
:
: fshrking
:

Do you know which modulation is used?
(I think it is CCITT V.32 standard)

I know now, it is 16-QAM.

It would be possible to write a decoding routine, either by detecting specific amplitude/phase of the carrier, or by emulating the 16-QAM demodulator.

Are you still interested in this?