[vorbis] Why 64kbps is important

[Michael Paine]

> On Mon, Aug 06, 2001 at 10:22:33PM -0700, Michael Paine wrote:
> > Did you know:
> > Everyone needs to remember the purpose to 64kbps audio -- VoIP.
> >
> > The current standard for G.711 is 64kbps, and once Docsys 1.1 become
reality
> > this time next year, the VoIP industry will start looking for the next
> > generation audio codec for the cable softphone industry.
> >
> > This is why MP3Pro and WMA are fighting it out for the 64kbps industry.
Did
> > anyone on this newsgroup know that?
>
> I find this very hard to believe: Both MP3Pro and WMA (and Vorbis too)
have
> *way* too much codec delay to be at all suitable for VoIP.

Using superscaler techniques, I know someone who can decode MP3 @ 300x on a
PIII 500mhz and encode @ 40x [ I just wish he would release his code :( ]

>
> Furthermore, the only reason to use anything other then G.711 (ulawed PCM
> audio) at 64kbps would be to offer greater quality then normally offered
by
> telephones, which really doesn't make much sense when you consider people
> are satisfied with the current quality, and if the call passes through any
> standard telephone equipment, the added quality will be removed.
>

But people aren't satisfied with their quality (especially with speakphones
or conference calls).  IF they could hear stereo 44khz instead, they would
never want to go back!  I agree with you on the fallback audio issue, but do
you disagree that cable softphones aren't just around the corner?  Would you
agree that 2.5G+ cell phones aren't going to look into supporting > uLaw
audio in a year or two (some cell phones already support MP3 codecs,
although seperated)?  Would you agree that there is a trend of PDAs to merge
with cellphones, giving > uLaw possibilities (especially with ARM chips),
while supporting "cleaning" code (such as Clarity and Wavemakers).

Time will tell, but since I'm in a position to add Vorbis to major telecom
equipment, I'm going to say "wanna bet?"

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