> On 07/28/2011 10:53 AM, Mike wrote: > > Hi, > > > > I've been trying to get MoH files to sound decent. I've got a hold of > > Royalty-free Classical music (a safe choice for most of my customers) > > and I`ve been trying to convert them to the normal telephony/Asterisk > > format using sox. Unfortunately, it sounds really bad. I don't expect > > concert hall quality of course, 8000KHz being what it is, but is there > > a better way to convert from good quality .wav files to 8000Khz ? Am I > > using the wrong tool? > > Can you elaborate as to what you mean by "really bad"? What acoustic > artifacts are you encountering? > > Are you testing from a mobile phone? Cell phones use variable bit rate > codecs and at times, vicious compression, depending on signal strength and > other factors. Anything is going to sound like crap on them regardless. > Make sure you are testing from a reasonable endpoint. >
Alex, I should have said I am trying this both from a landline using ulaw, and from a Polycom phone using g729 codec. G729 is noticeablty worst, as you`d expect, maybe this is what is reported by my customers. Is there any way to have a "decent" g729 file, or should I just give up and change everyone to ulaw ? Mike -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
