[vorbis] MP3/Vorbis comparision

[Frank Grotelueschen]

Martin Blackwell wrote:

>In my efforts to convince people to hear how good Vorbis is when compared 
>to MP3, I'm gonna be encoding tracks from my CD collection to both 
>formats, then writing them to audio CD, so people don't have to install 
>extra software to hear the difference.
>Has anyone got some suggested specs for the options for MP3 encoding when 
>using CDex or Chun-Yu's MP3 writer for winamp (preferably in VBR mode MP3 
>for easier comparison)

In the last year in october, i have objected here the worse high frequencies
response from ogg. It produces much too high frequencies at normal bitrates.
Since then, i have not seen any improvement in the software. No new version
was released since then. MP3 do not have this problem. I'am still using lame.
My mail last year had started some discussion, but it ended with no result.
Here this mail:

 >Date: Wed, 09 Oct 2002 20:32:02 +0200
 >To: vorbis at xiph.org, vorbis-dev at xiph.org
 >From: Frank Grotelueschen <fgro at gmx.de>
 >Subject: [vorbis] high frequencies response
 >
 >Hi there
 >
 >In the past, i have used lame to encode high quality mp3-files
 >(vbr 1, bitrate ~ 192kbit). I tend to switch to ogg with Quality 4
 >or 5, but i noticed, that many ogg-files tend to produce too much
 >high frequencies response. In many cases, this is very noticeable.
 >For my opinion, i cannot accept this worse frequence reponse.
 >I have used latest version of ogg (OggEnc v1.0, precompiled binary).
 >
 >To demonstrate this, i have made a short sample:
 >http://home.t-online.de/home/520022073876/highfreq.zip
 >The length is 2MB.
 >
 >It includes the original wav-file (5sec length) and ogg-files from
 >quality 0 up to 10. This effect is very noticable from q0 to q4,
 >it is then reduced more and more from q5 up to q10.
 >Quality 10 sound ok, the frequence response is flat. But the
 >filesize is much too high for using it.
 >
 >I hope, this can be fixed in a further version of ogg.
 >
 >Sorry for crossposting in vorbis at xiph.org and vorbis-dev at xiph.org,
 >but i don't know which list is the better place for this topic.
 >
 >Frank

Frank

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