All (c) C. Alex McLean 2008

http://doc.gold.ac.uk/~ma503am/

Released under the GPL version 2 or later, see COPYING for details.

====================================
 MembraneCircle and MembraneHexagon
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Here's two supercollider externs.  They're rather similar, being
triangular waveguide meshes of a drum-like membrane.  You input some
excitation, such as a pulse of noise, and can adjust the tension and
loss while it plays.

They're named after the shape made out of triangular meshes.
Obviously you can't make a circle out of triangles, but it tries.  At
the moment MembraneCircle is a bit bigger than MembraneHexagon, using
more waveguides and therefore more CPU.

If you want to play with it you might want to fiddle with the defines
at the top of the .cpp files.

I'm linux based so I'm afraid can't offer help for how to get this
compiled for other systems.

=======
 Files
-=-=-=-

Makefile - makefile tested for use under linux (ubuntu)

membrane.sc - code for testing with native supercollider (sclang)
membrane.lhs - code for testing with Rohan Drape's HSC library for Haskell

Membrane.cpp - The UGens are defined in here.

shape.c - Where the triangulation happens.  It would be quite trivial to 
shape.h   add more shapes, patches welcome.

classes/MembraneHexagon.sc - class files for use with sclang, copy into 
classes/MembraneCircle.sc    your Extensions folder.

triangulation.pde - processing patch for visualising the triangulations

=========
 Contact
-=-=-=-=-

alex@slab.org

Note I can't offer support although may be able to give some tips...

===========
 More info
-=-=-=-=-=-

My stuff is here:
  http://doc.gold.ac.uk/~ma503am/

I also recommend the following thesis:
  The Physical Modelling of Drums Using Digital Waveguides
  JA Laird, University of Bristol - 2001 - University of Bristol

this book:
  Real Sound Synthesis for Interactive Applications, Perry R. Cook
  http://books.google.co.uk/books?id=20p7Jg_ZdkMC

and these websites:
  http://ccrma.stanford.edu/~jos/wg.html
  http://www-ccrma.stanford.edu/~be/drum/drum.htm