[vorbis] MP3/Vorbis comparision

[al goldstein]

I played all your files and couldn't hear what you objected to. What should
I listen for?

On Sat, 8 Feb 2003, Frank Grotelueschen wrote:

> 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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