We would like to sponsor someone to contribute a small bit of
C-programming to the Freeswitch open-source telephony project.
Specifically, we need help to update beep-detection algorithm used in
mod_avmd module.
Mod_avmd attempts to identify a beep of unknown frequency at the end of a
voicemail message. The stream being analyzed is an SIP G.711 with an 8K
sample rate and encoded as mu-law. We are looking to improve the accuracy
of the beep detection while ensuring that the algorithm is CPU-efficient.
The Freeswitch integration has already been done in the mod_avmd. It only
requires an algorithmic makeover.
You can view the existing algorithm and implementation at:
https://freeswitch.org/fisheye/browse/freeswitch/src/mod/applications/mod_avmd/mod_avmd.c?hb=true
If you're interested in helping, please contact us at the email below with
a quote and a brief description of how you would solve the problem.
mstate /at/ modusresearch.com
(I've obfuscated the email a bit. Hope it's still clear.)
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