Is it possible to detect voice while playing back a message? I am using
AMD (Answering Machine Detect application) and it seems to work pretty
well but some outgoing messages (on my Sprint cell phone for example)
have silence in them. After the initial message of about 20 seconds it
says press or
Hecimovic [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, October 04, 2003 10:39 AM
Subject: Re: [Asterisk-Users] Voice detection
dsp.c has silence detection that works quite well for detecting
end-of-voice
silence. It is used to allow only a certain amount of silence at the end
of
voicemails
Steve,
I don't have any real experience in DSP methodologies, although I have picked up
on the high-level theories in my research. However, I am *very* strong-willed
in the Where there's a will, there's a way category. :)
Here's my current thought:
Sphinx is an open source STT library that
dsp.c has silence detection that works quite well for detecting end-of-voice
silence. It is used to allow only a certain amount of silence at the end of
voicemails, for instance. See app_voicemail2.c on how to use it, specifically
the function play_and_record(). Note that the silence threshold
Does anyone know if there's public voice detection algorithms available? I've
scoured the net for the last hour or so, and I can't come up with anything
except a few proprietary or embedded solutions.
I know dsp.c uses goertzel algorithms for DTMF detection, but how does one
detect voice?
I
