[asterisk-users] Loud pop at the end of messages causing level problems
Hi everyone, I've set up a little Asterisk system with a Digium TDM400P and everything works splendidly except for the messages callers leave. Every message that a caller leaves is very faint. I've already set volgain=6.0 in voicemail.conf, and that seems better, but to be at a good volume I estimate I may need to go up to 40.0. Is that reasonable? One interesting artifact is that at the end of every message, there is a loud pop (I think I usually hear a faint click when the caller hangs up and then I surmise that the loud pop is some sort of local connection ending. If I do: sox msg0004.WAV zz1.WAV stat it always tells me that the volume correction should be 1.. I surmise that the volume peak is triggering on this loud pop. In fact if I trim off the pop with something like: sox msg0004.WAV zz1.WAV trim 0 00:00:15 stat Then it tells me that the volume gain should be between 7 and 12 depending on the message. So here are the questions: 1) Is there anything simple I can do to stop this loud pop at the end of every message? 2) Failing that, is there a way that I can shell out to some post processing on the message easily after it is left? I assume that Asterisk already does some processing with sox; this is where the volgain goes. Can I instead insert some logic like: - trim the last half-second off the message - Do a sox stat to determine the suggested gain - Use sox to readjust the gain I could script this up if I knew how Asterisk would call my script. Or, perhaps there is another solution I am not considering. Any help would be most appreciated. Thanks, Eric ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Loud pop at the end of messages causing level problems
Eric Deutsch wrote: Hi everyone, I’ve set up a little Asterisk system with a Digium TDM400P and everything works splendidly except for the messages callers leave. Every message that a caller leaves is very faint. I’ve already set volgain=6.0 in voicemail.conf, and that seems better, but to be at a good volume I estimate I may need to go up to 40.0. Is that reasonable? Before you tinker with the gain settings in voicemail.conf, I recommend you tweak the gain settings in zaptel.conf. -Stephen- ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Loud pop at the end of messages causing level problems
You should really never touch those. If you're having problems with the card call support because that is far from normal. /b On Oct 16, 2007, at 9:35 PM, Stephen Bosch wrote: Eric Deutsch wrote: Hi everyone, I’ve set up a little Asterisk system with a Digium TDM400P and everything works splendidly except for the messages callers leave. Every message that a caller leaves is very faint. I’ve already set volgain=6.0 in voicemail.conf, and that seems better, but to be at a good volume I estimate I may need to go up to 40.0. Is that reasonable? Before you tinker with the gain settings in voicemail.conf, I recommend you tweak the gain settings in zaptel.conf. -Stephen- ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
