Next CLUG meeting

[Simon Fowler]

On Thu, Mar 21, 2002 at 10:38:22PM +1100, Michael Still wrote:
> On Thu, 21 Mar 2002, Damien Elmes wrote:
> 
> > Matthew Hawkins <matthew at topic.com.au> writes:
> >
> > >> We should be able to do full streaming whatchamacallit with dual dolby thingamajings
> > >> so good it's just like being there.  Or failing that someone could bring along
> > >> their webcam and we could tape full ogg audio + 5 fps mpg.  Heck, even the audio
> > >> would be good.
> >
> > www.2600.org.au publish mp3s of some of the talks their members give, some of which
> > are very interesting and worth the download. if someone was willing to record
> > the talks then that'd be cool, but I fear matthew hit the nail on the head
> > here:
> >
> > > *cough*Telstra'smonopolyinducedexcessivetrafficcharges*cough*
> 
> What bit rate is needed for the voice? The geeks in space MP3s are around
> 6.5MB for 30 minutes of voice and bad music... That's not too bad.
> 
For voice, 64kb/s at 44.1kHz is good - you could probably go down to
40kb/s, particularly using vbr . . .

Of course, for oggs you could probably get away with 40kb/s at q=3
or thereabouts without any problems - that's the better option by
far, even without taking patents into account. 

A bit of experimentation would be in order, though - mic quality,
sample rate (on my SB Live! going below 44.1kHz gave hideous
quality), sound card quality, etcetera, will all play a part. The
big question is whether you can actually understand what's being
said, which can be harder than it seems when you're recording a low
quality sample and then using lossy encoding . . . 

If anyone wants a really cool digital audio app, btw, take a look at
ardour (http://ardour.sf.net) - still in development, but /really/
cool, and developing rapidly . . . 

Simon

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