non-cypher related question on audio analysis

[jet@nas.nasa.gov (J. Eric Townsend)]

This is only the tiniest bit related to crypto, but that doesn't seem
to be much outside the criteria for submissions to this list.. :-)

Anyone got pointers to decoding audio tones?  An intro book, source
code, newsgroup, mailing list, somebody I can take to lunch?  I'd like
to sample audio with my SGI, and suck out various simple tones and
combinations of tones.  (DTMF, single pitch variant tones, etc.)

thx.

--
J. Eric Townsend jet@nas.nasa.gov 415.604.4311
NASA Ames Numerical Aerodynamic Simulation      |    play: jet@well.sf.ca.us
Parallel Systems Support, CM-5 POC              |      '92 R100R / DoD# 0378
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