asterisk users - Jan 2004 - Play volume/speed adjustment on the per call basis

Hi,

It is important for some applications (voicemail and the like) to control
play volume and speed if instructed by the caller. The question is: how to
do it the right way with asterisk.

As far as volume - adding txgain and rxgain to the call structure[s]
and setting gains from there (instead of taking global values from config
files)
looks like an OK solution.

As far as speed - the easy way would be using sox 'speed' effect.

Any comments/suggestions are appreciated.

Thank you.

Alex Zarubin
Webley Systems, Inc.
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