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Discussion Groups | Speech Coding | G.729a Tone Detection
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
G.729a Tone Detection - James - Oct 16 19:35:00 2002
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I'm trying to detect answering machine tones.... so I don't care about the pitch... just that the pitch remains near constant for some duration. Are there any shortcuts to avoid full decode and still get things like dominant frequency / excitation level for a sample? Or other ways of detecting possible tones? Looking for hints / help you all might have... but also, if there is a developer available (ASAP) that could wrap this into a C library, we would be very interested. (We have C algorithms for uncompressed PCM data you could start with.) Jamie Yukes (435) 668-0866 |
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