[NUT-devel] [nut]: r613 - docs/nutissues.txt

[Rich Felker]

On Wed, Feb 13, 2008 at 04:48:42AM +0100, Michael Niedermayer wrote:
> > I'm against the useless physical units and denominator. Just the
> > ratios of the positions to one another matter; the whole thing is
> > scale-invariant for all practical purposes. 
> 
> Well, it is not scale-invariant, yeah the world sucks ...
> The speed of sound is not infinite and more distant speakers will have
> their signal hit the listener later. That causes a phase shift and could
> change a 2*sin() to 0*sin().

In the range of sane distances, is this really an issue? I'm thinking
anywhere from headphones to theaters. Somehow I suspect the speed of
sound and the frequencies involved make it irrelevant but I didn't
work out the math.

> So a system of a speaker at 1m and one at 2m will would sound different from
> one with a speaker at 1km and 2km (with the volume turned up sufficiently)

WOW I want those speakers! :)

> Iam not saying that there is any need or sense to store this nor that i would
> know what a decoder would do with that information, but i do know
> copper purity counters will prefer NUT over other formats if the distance
> is stored.

Well I would like to see some mathematical/physical reason that it's
potentially useful rather than the opinions of people who pay for
solid-gold *digital* audio cables to give their sound "more body"...

> > Otherwise I don't see
> > anything wrong.
> 
> good, what about the flag to skip the stuff = unknown pos? Do we want one
> if not what should be muxer store if it doesnt know the pos?

I suspect skipping pos should not be legal for >2 channels..
For 2 channels or fewer, making it optional would be nice.

Rich