[EMAIL PROTECTED] wrote on 06/28/2005 07:52:50 AM: > I was able to raise the volume from inaudible to acceptable by > increasing the RxGain in zapata.conf by 5db. I'd rather not go the > uncomressed wav route, as it will chew up storage in my email system.
I know I'm way behind on reading this, but I thought I would follow up. According to this message: http://lists.digium.com/pipermail/asterisk-users/2004-November/072990.html the reason that uncompressed WAV files are louder is that the software that saves the WAV file is amplifying the volume of the files by shifting the data two bits to the left (or making it 4x louder). It is in no way "fixing" the underlying problem of the file being too quiet; it is just throwing away dynamic range in order to amplify the file. Now that may not be a bad solution: if you don't need the dynamic range, but you *do* need the volume, so be it: you would prefer the off-chance of some clipping. It *has* to be a better solution to using the rxgain setting if you don't need to: rxgain is going to affect echo for the worse. Also notice that the volume of these files is sufficient when they are played back over the telephone: it's only when you play them back via a sound card that you have the volume problem. So, you can't just willy-nilly amplify everything. Hope this helps. Tim Massey _______________________________________________ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
