[vorbis] some more Spec questions

[Sebastian Gesemann]

Hi, Segher !

On Tue, 29 Apr 2003, Segher Boessenkool wrote:

[...]
> Hrm, it seems they can't be, yes.  What does libvorbis do here?
[...]
> Either that, or the cosine of that, modulo some scaling.
> Again, see what libvorbis does here.
[...]
> You can always see what libvorbis does -- its decoder is better
> tested than the one in the specification ;)

So the libVorbis code is the REAL specification here, huh ?
Hmmm.... If've the impression, that i'm not taken seriously.
It was my intention to build a vorbis decoder by NOT looking at
the libVorbis code in order to
- be able to tell wether it's possible to build it by only using
  the specification or not
- help improving the specification (which I think is an important
  task)
- be able to say that i've build it WITHOUT looking at the
  libVorbis source, which should be a real proof for the
  first item.

Actually, I expected the people who are responsible for the spec
to answer my questions without any "look at libVorbis", because
I thought, that the correctness of the spec isn't important to
just me rather to all the people.
It should not have been much work to answer my questions for those
who are involved with vorbis.

Nevertheless I'm still thankful, that I got a relpy this time.
I thought that since the "increase of high frequency energy by heavy
quantization"-thread i started, I would be on someones' ignore-lists. 
:-)

<p>BTW: I think this "high frequency energy boost" can be solved by
using "explicitly populated value mapping (tesselated VQ)"
(I'm currently playing with this stuff, so I might be wrong)

<p>bye,
Sebastian

--- >8 ----
List archives:  http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'vorbis-request at xiph.org'
containing only the word 'unsubscribe' in the body.  No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.