[vorbis] (Un)Usefulness of Vorbisgain?
Erik Stenborg
d99papa at dtek.chalmers.se
Mon Jun 24 23:34:15 PDT 2002
If you listen to the file you would notice.... ;)
The big problem with soundcards, and Sound Blaster Live in particular, is
not noise floor creeping up too high when you lower the volume, but
distortion when you play things at full scale. People who measured this
said it distorts sometimes down to -6 dB of full scale. So my pont was:
you will probably gain quality from lowering the volume some, and why not
using vorbis gain for this?
/Erik
On Tue, 25 Jun 2002, David Tenser wrote:
> I fail to see how this was a reply to my original post...?
>
> Erik Stenborg wrote:
> > I will quote Frank Klemm:
> >
> > Overload is a problem of all gadgets which do audio processing.
> > These are lossy codec and also the processing inside ever D/A converter.
> >
> > Download http://www.uni-jena.de/~pfk/mpp/audio2/overloadtest.zip
> > unpack it and
> >
> > listen to the WAV directly
> > encode it with mppenc and listen with "mppdec"
> > ... listen with "mppdec --scale 0.5"
> >
> > end quote
> >
> > Try to play this file at full scale and then halve the volume with some
> > audio editor (CEP or whatever) and listen again.
> >
> > /Erik
> >
> >
> >>I'm using a Sound Blaster Live 1024 card. Don't ask me if it's good or
> >>bad... Anyway, every decibel makes a difference. The soundcard is
> >>definitely the weak link in the sound chain, and if I have to turn the
> >>signal down even more with Reply Gain, I can might as well raise/lower
> >>the volume knob whenever a song is louder/quiteter than the others.
> >>
> >>Besides, I always "master" the poor recordings before compressing them
> >>to ogg. (Using Cool Edit 96; a special disortion to remove peaks,
> >>normalize, noise reduction; the result is always better than the original)
> >>
> >>I think it's a good thing that Replay Gain exists, and I'll add the tag
> >>info to my ogg files just in case, but personally, I'll probably never
> >>use it.
> >>
> >>If someone could make a receiver that could get this replay gain data
> >>and adjust the volume from there instead, *that* would be something! But
> >>weakening the signal from the source is not an option, for me.
<p>--- >8 ----
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