Hello Michael, Try taking a single source file (plenty of them in the raw dir) and processing it with the 3 rates, then listen to the output files using the ../script/menu utility that lets you play them quickly next to each other.
Cheers, David On Tue, 2012-06-05 at 17:51 +0200, Michael Hartje wrote: > Dear list, > > I found it very helpful for some own live experiments to use the > codec2-dev svn archive with the very useful pipeline calling by > > rec | c2enc $RATE - -| c2dec $RATE - - | play > > (with detailed parameters) > export RATE=2500 > rec -r 8000 -t raw -s -b 16 -c 1 -|./c2enc $RATE - -|./c2dec $RATE - > -|play -r 8000 -t raw -s -b 16 -c 1 - > > when I changed RATE to 1200, 1400, 1500 I did not remark any significant > difference in quality -- this was very surprising to me. > > What could I expect will be the difference in audio quality? > Can anybody explain that to me? > Is there any simple parameter in the obtained audio at the end which > could be heard clearly? or: is the major difference only seen by some > measurements (e.g. noise) > > Thanks for reading this > > Michael > DK5HH > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
