Subject: Re: perceptual audio codecs From: Joachim Thiemann <joachim.thiemann@xxxxxxxx> Date: Sat, 12 Apr 2014 21:22:30 +0200 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>On 12 April 2014 17:25, James Johnston <audioskeptic@xxxxxxxx> wrote: > I have to ask: Is this OFFICIAL source code the best known encoder? For AMR-WB+, I'd say in 2004 it certainly was. You'd have to ask Roch Lefebvre if a better version of that codec exists nowadays. Back then, we tried our best to win the standard, of course. For enhanced aacPlus, my guess is that the perceptual model was tweaked with computational complexity as a major constraint, but of course they wanted to win the standard just as badly! (and in the end, as can be seen it was a draw - 3GPP added both as optional standard codecs, effectively a loss for both) Cheers, Joachim -- Joachim Thiemann :: http://jthiem.bitbucket.org :: http://signalsprocessed.blogspot.com