Re: [asterisk-users] MusicOnHold Files
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Yuan LIU wrote: One item in my todo list is to make better sound quality whenever end point supports it. Wide-band codec's can already produce better sound than toll. So why do we still need to convert to 8 bit? Should be 16 bit, 8Khz, not 8 bit. However, your point stands, that it should be able to use 44.1Khz instead of 8Khz. The problem is, there is still quite a bit of work to support larger sample rates without simply doing passthrough. If I remember correctly, someone did have a patch and a bit of work done for 1.2. Maybe this made it into 1.4? - -- Cheers, Matt Riddell ___ http://www.sineapps.com/news.php (Daily Asterisk News - html) http://wap.sineapps.com (Daily Asterisk News for your cellphone) http://feeds.feedburner.com/AsteriskNews (Daily Asterisk News - rss) -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFoWeVS6d5vy0jeVcRAqx0AJ41+MMCToCDRvTUrJBipwKoyqdj6QCfeEuG 3INcPOyOmwAbBoNJMNQ8ku4= =Nm2h -END PGP SIGNATURE- ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[asterisk-users] MusicOnHold Files
I was just wondering what you all are doing for music on hold files for best quality. I am not much of an expert on sound rates, bits, stereo, mono, tracks, and all that jazz. Currently I am taking music from a CD (our campus jazz band has recorded a CD), converting to WAV, using Audacity to convert the stereo tracks into mono, drop the gain to -15db, then I use sox to convert to GSM and 8 bit (by typing # /usr/bin/sox file1.wav -r 8000 -c1 file2.gsm resample -ql ) The audio while on hold is OK. I wonder if there is a way to get better audio. I noticed that asteriskguru.com has a audio conversion on their website. Thanks for any help. Forrest ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] MusicOnHold Files
On Thursday 04 January 2007 18:01, Forrest Beck wrote: I was just wondering what you all are doing for music on hold files for best quality. I am not much of an expert on sound rates, bits, stereo, mono, tracks, and all that jazz. Currently I am taking music from a CD (our campus jazz band has recorded a CD), converting to WAV, using Audacity to convert the stereo tracks into mono, drop the gain to -15db, then I use sox to convert to GSM and 8 bit (by typing # /usr/bin/sox file1.wav -r 8000 -c1 file2.gsm resample -ql ) The audio while on hold is OK. I wonder if there is a way to get better audio. I noticed that asteriskguru.com has a audio conversion on their website. Since telephones are so lo-fi, is there any reason to invest a lot of energy in hi-fi hold music? .wav is uncompressed and lossless, so it should sound better than .gsm which is a lossy format. But I doubt anyone can really tell the difference on a telephone. anyway, how long are you leaving your callers on hold? :) -- ~ Carla Schroder Linux geek and random computer tamer check out my Linux Cookbook! http://www.oreilly.com/catalog/linuxckbk/ best book for sysadmins and power users ~ ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] MusicOnHold Files
Carla Schroder wrote: On Thursday 04 January 2007 18:01, Forrest Beck wrote: [snip] Currently I am taking music from a CD (our campus jazz band has recorded a CD), converting to WAV, using Audacity to convert the stereo tracks into mono, drop the gain to -15db, then I use sox to convert to GSM and 8 bit (by typing # /usr/bin/sox file1.wav -r 8000 -c1 file2.gsm resample -ql ) Since telephones are so lo-fi, is there any reason to invest a lot of energy in hi-fi hold music? .wav is uncompressed and lossless, so it should sound better than .gsm which is a lossy format. But I doubt anyone can really tell the difference on a telephone. anyway, how long are you leaving your callers on hold? :) I would stay far away from .gsm -- I'd go for ulaw or even just leave it as WAV and let asterisk transcode from there if needed. You'll probably notice a difference -- music degrades much worse than voice with the low bitrate codecs. ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] MusicOnHold Files
From: Carla Schroder [EMAIL PROTECTED] On Thursday 04 January 2007 18:01, Forrest Beck wrote: I was just wondering what you all are doing for music on hold files for best quality. I am not much of an expert on sound rates, bits, stereo, mono, tracks, and all that jazz. Currently I am taking music from a CD (our campus jazz band has recorded a CD), converting to WAV, using Audacity to convert the stereo tracks into mono, drop the gain to -15db, then I use sox to convert to GSM and 8 bit (by typing # /usr/bin/sox file1.wav -r 8000 -c1 file2.gsm resample -ql ) The audio while on hold is OK. I wonder if there is a way to get better audio. I noticed that asteriskguru.com has a audio conversion on their website. Since telephones are so lo-fi, is there any reason to invest a lot of energy in hi-fi hold music? .wav is uncompressed and lossless, so it should sound better than .gsm which is a lossy format. But I doubt anyone can really tell the difference on a telephone. anyway, how long are you leaving your callers on hold? :) One item in my todo list is to make better sound quality whenever end point supports it. Wide-band codec's can already produce better sound than toll. So why do we still need to convert to 8 bit? Yuan Liu -- ~ Carla Schroder Linux geek and random computer tamer check out my Linux Cookbook! http://www.oreilly.com/catalog/linuxckbk/ best book for sysadmins and power users ~ ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
