[ardour-dev] quick note re: MTC

Jay R. Ashworth jra at baylink.com
Tue Jan 2 12:22:32 PST 2007

On Tue, Jan 02, 2007 at 08:28:01PM +0100, Fons Adriaensen wrote:
> On Tue, Jan 02, 2007 at 02:04:55PM -0500, Jay R. Ashworth wrote:
> > Hijack: a friend of mine wants to use a 5.1 DVD to do some halloween
> > effects, and I was wondering if it was possible to combine stereo and
> > 5.1 panning with manually assigned mono sounds: his 5 speakers won't be
> > in the traditional positioning, obviously.
> Yes, it's possible to combine panning with direct assignment, but the
> latter will emphasize the speakers as being the source of the sound
> rather than create a sound stage in which the speakers 'disappear'.
> One of the results of the Ambisonics based panning is that it will
> never use just a single speaker, not even if the direction of the
> sound corresponds to a speaker position, in order to avoid this
> speaker emphasis effect. But you can still assign channels to the
> 5.1 signals after the decoder of course, for example movie dialogue
> to the center speaker.
> Panning stereo to surround is possible as long as you don't try to
> make it much wider than about 60 degrees. More will produce a 'hole
> in the middle'. Except with rather sophisticated processing there is
> little that can be done about this.

Ok; those are roughly the answers I expected, but I'm not calibrated on
this issue at the moment.  Thanks.

By all means: implement away.  :-)

-- jra
Jay R. Ashworth                                                jra at baylink.com
Designer                          Baylink                             RFC 2100
Ashworth & Associates        The Things I Think                        '87 e24
St Petersburg FL USA      http://baylink.pitas.com             +1 727 647 1274

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