QUOTE(guruboolez @ Jul 12 2004, 01:33 PM)
According to Roberto's conclusions, vorbis didn't beat mpc. And according to my test, vorbis isn't ~equal to mpc. At least not at the same bitrate range. Vorbis is clearly inferior on most samples I've already tested (it means the 10 present in this test, and some other I've tested occasionally those two last years).
And I think it's better to take into consideration AAC format: it's better than all other solutions at low bitrate (let's see the results of 32 kbps test, but at 64 kbps, old HE-AAC had a serious margin), competitive at mid bitrate, and has also great performances at mid/high bitrate.
Roberto conclusions are simply wrong. Ogg Vorbis had more point and it is winner, period. Roberto is well known AAC zealot who don`t like Vorbis, I don`t care his conclusions, results are clear - Vorbis is SLIGHTLY better in 128kbps test.
According to your test Vorbis IS (only) slightly worse than MPC - in points (well, picture is gone, can`t give numbers) and is (slightly?) better than overtuned mp3.
I think that it is not better to take into consideration AAC format - free implementations are poor, not-free are not free - I don`t want to pay for this since I have competentive free alternative - maybe (HE-)AAC is slightly better, but not so much better to pay for it! Pay for encoder, pay more for NOKIA cellular phone (yes, price for HE-AAC is simply included in price of mobile) etc.
Also - Vorbis is simply sufficent for most people for most of bitrate ranges (mp3 fails for lower bitrates). If AAC/MPC is sooooo super, and Vorbis SUX, why Rio Karma, Irivier etc. and many game developers choose Vorbis (even outdated encoder, 64kbps)? Nokia is exception, one of not too many. For internet radios and music in games market is divided mostly between mp3 and Vorbis...
Also Vorbis has so much room for tuning - 1 year ago noone thought about results like in this test, in next couple of... years

maybe months

we`ll see more improvement.
PS. I wonder if HE-AAC integer decoder takes less or more CPU power / RAM than Vorbis one?