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Re: Feedback Delay Network - Sean Costello

Date1999-10-21 16:50
FromSean Costello
SubjectRe: Feedback Delay Network - Sean Costello
Bill Gray wrote:
> 
> Hi Sean,
> 
> I saw your FDN orc on the list the other day and tried it out. Nice work.
> 
> Would you pleease do a simple flowchart of it so I could better understand
> it's implementation?

I don't have any methods handy to do flowcharts right now. For a basic overview of what I am doing,
the following papers can explain it much better than I can:

Stautner, John and Puckette, Miller. "Designing Multi-Channel
Reverberators." Computer Music Journal, Vol. 6, No 1, Spring 1982. (also
in The Music Machine, edited by Curtis Roads, MIT Press, 1989)

Jot, Jean-Marc et Olivier Warusfel. "A Real-Time Spatial Sound Processor
for Music and Virtual Reality Applications." ICMC: International
Computer Music Conference, Septembre 1995.(available online at
http://mediatheque.ircam.fr/articles/textes/Jot95/)

Other Jot articles can be downloaded at
http://mediatheque.ircam.fr/articles/index-e.html

Davide Rocchesso, Julius O. Smith. "Circulant and Elliptic Feedback
Delay Networks for Artifical Reverberation." Published online at
http://www-ccrma.stanford.edu/~jos/cfdn/cfdn.html

The Rocchesso/Smith paper is the most relevant to the instrument I developed, as it uses a
scattering junction based on a single junction of 8 waveguides of equal characteristic impedance.
This makes the math MUCH simpler.

Hope this helps,