[CM] translating spirals into music CLM

[Fernando Lopez-Lezcano]

On Wed, 2007-07-25 at 01:51 -0400, john henry dale wrote:
> Ok, does anyone have any insight on how/what I would use in CLM to
> send panning information to a 5 channel speaker system with a tweeter
> tree speaker sitting above the audience in the center of the room ?

You could also take a look at dlocsig (which comes with clm - wrote it a
long time ago). With it you can define "paths" an object will take when
moving in space and then use dlocsig to render that movement. Dlocsig is
sort of a unit generator you can include in your own instruments. Or you
can use the example soundfile ins to move a soundfile around. It is not
easy to use :-) but it can deal with arbitrary speaker configurations.
It can render using VBAP (amplitude panning) or first order Ambisonics.

-- Fernando


> Would that tweeter tree be a Z axis for panning coordinates ?  I have
> basically figured out the timing, tonal and rhythmic components for
> the "spiral composition" by using fibonacci numbers as time marker
> points in the composition to increase the speed of the rhythm and the
> note frequencies logarithmically. But what I can't figure out is how
> to map sound output to a 5 channel system such that the sound will
> seemingly go in circles around the room (and audience), starting from
> sub-audible frequencies (1 hz, 2 hz, 3 hz, 5 hz, 8 hz etc) from
> "below" the floor, so to speak, and continuing to spiral "upward"
> until reaching a climax point (which will have all 5 channels going at
> full amplitude) and then "descending" back down again. Would it
> perhaps be better to use an 9 channel system to do this, with 4
> speakers on the floor and 4 at ear height ?  anyway, i looked am
> assuming that loc-sig is where i would start with this but would truly
> appreciate any tips or shortcuts people may have in terms of how to
> coordinate the rhythm and timing of the composition with the panning
> effects I mentioned earlier. Thanks, 
> John Henry Dale