[vorbis] Vorbis vs Speex

[Jared Anderson]

  Not knowing the particulars, this is just a guess, but it sounds
  plausible.  Speex may use the very information that MP3 throws away,
  even at high bitrates, for its encoding.  If this is the case
  encoding from mp3->wav->speex will be far worse than
  original->wav->speex.

  Cheers,
    J

* noprivacy at earthlink.net <noprivacy at earthlink.net> [2003-05-27 09:10]:
> I agree, of course.  And that is why I made certain to state what bps rate
> the original mp3's were.
> 
> I was trying to be honest.  And I even admitted that my second test results
> were somewhat different  from what my original impression had been and that
> some of my problems might have been due to SpeexDrop configuration issues.
> 
> (And Greg... I forgot to mention... No I don't have the original CD's for
> those.  I have the original LP record of Bill Cosby but not the cd.  And I
> got the Slinky commercial off WinMX.)
> 
> 
> ----- Original Message -----
> From: "Ross Levis" <ross.levis at cchlawbase.co.nz>
> To: <vorbis at xiph.org>
> Sent: Monday, May 26, 2003 5:59 PM
> Subject: RE: Re[2]: [vorbis] Vorbis vs Speex
> 
> 
> IMHO, I don't believe it will make much if any noticeable difference
> when encoding at such low bitrates, where the sound is so drastically
> different to the original.
> 
> Ross.
> 
> Greg Wooledge wrote:
> > > For the source I used:
> > >
> > > Bill Cosby - 9th street bridge (vocal stand up comedy 160k
> > mp3) Bill
> > > Cospy - Noah (vocal stand up comedy 128k mp3) Slinky commercial
> > > (mostly woman singing 128k mp3)
> >
> > You converted a lossy format (MP3) to another lossy format
> > (Speex). And you expected it *not* to suck?
> >
> > Get the original CD and re-rip directly to WAV.  *Then*, and
> > only then, encode to your lossy codec of choice.
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