[vorbis] (lame) mp3 vs oggvorbis (review)

[Monty]

On Sat, May 26, 2001 at 10:49:37AM +0100, Mat Bettinson wrote:
> Heya Karol,
> 
> KP> a comparison between the two formats can be read at 
> KP> http://www.digit-life.com/articles/oggvslame/index.html .  i 
> KP> first heard of this from Vorbis Extreme ( 
> KP> http://solair.eunet.yu/~aldov/ ).
> KP> anyone see any problems with the review?
> 
> Sure, it does that same stupid thing that all reviews of codecs on the
> Net appear to do. It looks at graphs of raw data in the frequency
> domain. It appears that these people have understood nothing about the
> issues of psycho acoustics.

Not true; the graphs are very interesting and the author clearly
uses them to help illustrate what he hears.  They *are* indicative of
how the algorithms in LAME and Ogg actually work.  Note that in his
evaluations, he made it clear that his ratings were based on
listening.

The author does appear to let the graphs influence his subjective
listening opinion.  That's a no-no.  But he definately isn't basing
his results just on the graphs.

> Undoubtedly you'll find that this guy claims he can hear 24KHz too,
> most of them do. One really ought to ignore this sort of thing in
> favor of the only valid test, double blind tests.

Don't be an ass.  He said no such thing.

(and, as for hearing > nkHz, the ear's ability to detect
high-frequency impulse energy apparently extends beyond it's ability
to hear high-frequency tones.  Otherwise there'd never ever be a
reason to use frequencies > 18kHz)

Monty

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