[Icecast] Re: [Vorbis] AACplus
ross at stationplaylist.com
Fri Feb 25 14:23:52 PST 2005
The listeners I mentioned were comparing MP3 128k streams and 48k AACPlus
streams from the same organization. They have several streams running, and
the input audio is the same.
There were 30 or 40 comments I read on the forum (before giving up) about
the AACPlus feeds when they were introduced, and at a guess 95% said it
sounded much the same except MP3 had slightly more bass and AACPlus had
better treble (highs).
> But at lower 'streaming radio' rates, no, Vorbis isn't the best. It
> wasn't tuned / designed for those rates.
Roberto's 32k rate listening test didn't show Vorbis in a good light... I
doubt a 48k test would be much different.
It is the low bitrates that I'm concerned about, and streaming radio is
concerned with, so the 1 million dollar question is: Is it possible that
Vorbis can be tuned in a substantial way to sound anywhere close to AACPlus
at low bitrates. I currently stream a 28-32kb/s mono Vorbis stream using
44khz, q=-2, but I've heard an AACPlus 32kb/s stereo stream and it sounds
much better, Much more highs.
Last I heard, Vorbis is cannot benefit from SBR or PS.
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