Vorbis - Nov 2002 - sticking a speex file inside a vorbis file

I forget the correct terminology, but anyway, sumthin struck me while getting
help for sorting out my previous problem.

Among other things (apart from doing the gigs with my computer) I use the G4s
(and soon hopefully 1 of those nice dual G4s we just got) to record tracks of
the different ppl & bands on our course (which is BTEC Popular music btw)
using Pro Tools.

Since Vorbis has the ability to stick other things such as midi data into the
stream, i was wondering something.

Since i can use pro-tools to record multiple tracks (usually 1 track per voice,
instrument & extra tracks for the DSP that would cause weirdness on the main
track), i can also export the tracks individually.
So i was wondering if it would be usefull to :

export the vocal tracks seperate from the instrumental & DSP tracks
    encode the vocal tracks to speex
    encode the instrumental & DSP tracks to vorbis
    maybe save the lyrics in whatever format is most compatible
    maybe save the instrument tabs in whatever format is most compatible
    maybe save any midi data to be used in a weird/fancy lightshow with the the
crap lighting desk
then
    stick the speex tracks, into the vorbis file (and maybe the lyrics,
instrument tabs & midi data if necesary)

would that be a good/possible idea, and would that stream well over the net
(most likely using Oddsocks' nice software)

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"Rodrigo Gómez" wrote:
> 
> I haven't tryed speex, and, as far as I know, it is a _big_ loosy
codec,
> primary developed to voice chats arount the net (where the bandwith is
> important) and not really a high quality codec as Vorbis is.
"Segher Boessenkool" wrote:
>This is misrepresenting the issue.  Speex sounds _very_ nice imho --
>_on speech_.  It's not good on general audio (like, music).  Vorbis on
>the other hand does a lousy job of speech (if you look at
quality/compression
>ratio).  I think Speex will do a better job than Vorbis for a capella
>_at very low bitrates_.  But you will hear artifacts.  So better use Vorbis.
Testing on "Yoko Kanno - Macross Plus Original Soundtrack ~ for fans only -
13 - VOICES (a cappella version)" at different combinations ranging from
default speexdrop config to q10 complexity 10 resulted in good quality compared
to 16KHz wave file (which on my system was basically indistinguishable from the
cd as it is just pure vocal). Which is why i posted a thing titled
"sticking a speex file inside a vorbis file"
I'd upload the files, but that would most likely be questionable. Does
anyone want to either tell me where to get .WAV files from to test on, or email
me some of their own?
either reply to whatever address i end up sending this from, or to
not_a_weirdo_just_strange@yahoo.co.uk

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