MAX/MSP Patches by Christopher Keyes 
ckeyes@hkbu.edu.hk

26 January 2004
The Patches:
Spatialization:

Granular Spatializer: breaks an incoming stereo source into 4 or 8 grains and allocates 
each grain to to a particular output channel. In addition, each grain can be given a different 
delay and/or transposition.

Spectral Spatializer: This program uses frequency domain filtering to spatialize/animate stereo 
sound sources over 2-8 channels of playback. It does this by applying an equalization curve to 
one channel while applying the opposite curve to the opposite channel. It includes numerous 
automation controls.

Stereo-to-8 Channel Amplitude Panning Array: take a stereo source and pan each channel to 
either 4 or 8 playback channels. The panning curves used implement a square-root curve preserving 
constant power. This patch also has many automation controls.

Granular Effects:

Real-time Granular Time Expander/Contractor: acts on audio from a microphone or a prerecorded 
segment (through the 'Granularize Window'). It allows for 16 separate transpositions of the audio 
in cents and/or random units and outputs them
over 2, 4, or 8 output channels.

Granular Cloud Generator: applies synchronous and asynchronous granular synthesis techniques to form 
granular clouds (in real time) output to 2-4 channels. It allows for up to 400 grains per second and 
includes reverb, all manner of transpositions, and automation controls.

Compatibility:
All of the patches are made with the standard library of MAX/MSP externals and thus should work 
on Macintosh (OS9.x & OS10.x) and on Windows (XP) platforms. In order for them to run you must have 
a copy of the MAX/MSP environment on your computer. If you do not, you can download either a 30-day 
trial version or MAX/MSP_Play  from the Cycling'74 website (note you can not edit patches with the 
later but it will not expire in 30 days :-).
http://www.cycling74.com/products/dlmaxmsp.html

Notes about playing from the CD/DVD drive: 
Mac OS9.x users: In the OSX version of MAX/MSP there is no CD~ object; access to the CD-Rom drive 
is made via sfplay~, and this is how the patches are set up. This will not work, unfortunately, 
for OS9.x. If you are using 9.x and want to access a CD, you'll need to include your own CD~ object.

Copyright:

Permission to use, copy, and modify this software for any non-commercial purpose and without fee or 
royalty is hereby granted. Permission to distribute or use of the software for sale, rent, or hire is 
NOT granted.  
Copyright 2004 by Christopher Keyes.  

Disclaimer:

The included files are provided as is with no guarantees.  The author will not responsible for any 
potential problems that may result from their use.