OT: ogg file blind, listening test

Brian Kelsay Brian.Kelsay at kcc.usda.gov
Fri Oct 8 08:52:21 CDT 2004


Jeff,
I don't know about the .ogg bitrates, but with .MP3 I listen to 128Kb streams and files.  My ears can detect a slight difference, but the space savings is worth it.  At 256kb on MP3, even the most sensitive ears shouldn't detect the difference.  Maybe less than 1% of the population would hear a difference.  I seem to recall similar data on this at the Ogg Vorbis site and the WinAmp site.  Look here and read down a ways: http://www.vorbis.com/faq.psp#lossy

Brian Kelsay

>>> jeffslists <> 10/08/04 02:10AM >>>
Since someone here has just mentioned .ogg files I was wondering what 
encoding rate I need to use so that I cannot distinguish my .ogg file 
from my cd.  A couple years back I read about a double-blind (maybe just 
single blind) study with 256kbit constant bitrate mp3's.  The listeners, 
who were described to have excellent ears, could not distinguish the 
mp3's from the cd's, though a computer could.  I don't care what a 
computer can distinguish.

I have searched the net several times and found no similar study with 
.ogg files.  Aren't there any people who have done a blind study with 
.ogg files?  I want to know the minimum quality settings I can use with 
.ogg in order to save hd space.  I have about 120gb 256kb mp3 music.  
According to my preliminary research I think I can save at least 30% space.





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