Subject: Re: [linux-audio-dev] Re: a GPLed competitor to MP3 ?
From: rob_AT_mur.org.uk
Date: Thu Aug 24 2000 - 21:02:54 EEST
On Thu, Aug 24, 2000 at 12:17:27PM +0200, Jörn Nettingsmeier wrote:
> after giving it a quick test, i found ogg to be quite decent
> sounding, but i detected subtle pitch problems (a beat-like vibrato
> on clean guitar sounds) and a slightly different overall sound than
> mp3 (at first glance i would say less detail, but that's just a
> first impression).
Currently, to compare vorbis with mp3, you should use the stereo mode
when encoding the mp3, because vorbis doesn't yet do joint-stereo. See
the interview on slashdot for more information.
>
> plus it seems that playback is slightly more cpu-intensive than mp3
> at a comparable bitrate (xosview shows 26% peaks w/ mp3 and 33%
> peaks w/ ogg, the peaks seem to be of the same length and interval,
> but this is not a waterproof measurement !)
> the encoder speed is at present not comparable to lame, but then, RT
> encoding is not the prime goal.
I expect they will work on optimisation after they have all the
features working.
>
> if - as the ogg folks claim - there is room for tweaking and sound
> improvement, hm, well, this might be something.
>
> the developer site is
> http://www.xiph.org/ogg/vorbis/index.html
>
>
> might it be useful to get these folks onto LAD, or would that be
> outside its scope ?
> (but hey, when we can talk about parsers, we can talk about codecs !
> :)
>
> regards,
>
> jörn
>
>
> Jörn Nettingsmeier wrote:
> >
> > hello lad-folk !
> >
> > in the latest lwn.net issue, i found a reference to
> > http://vorbis.com ,
> > home of Ogg Vorbis, a new, open source audio codec.
> >
> > it is said to be as good as mp3 in terms of compression rate and
> > quality, although it is somewhat beta still and produces minor
> > artefacts.
> > it is licensed under gnu gpl/lgpl.
> >
> > let's give this a test - even if fraunhofer doesn't charge users for
> > an mp3 license now, this may change in the future.
> >
> > regards,
> >
> > jörn
> >
> > --
> > Jörn Nettingsmeier
> > Kurfürstenstr. 49
> > 45138 Essen, Germany
> > http://www.folkwang.uni-essen.de/~nettings/
>
> --
> Jörn Nettingsmeier
> Kurfürstenstr. 49
> 45138 Essen, Germany
> http://www.folkwang.uni-essen.de/~nettings/
>
-- Rob Murray
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