THE FOLLOWING FILE DESCRIBES THE VARIOUS SYD PATCHES LOCATED HERE:

http://www.jbum.com/syd/patches/

Patches by David Kropf:

  AmRadio.syn
  AmRadioTest.syn
  FmRadio.syn
  FmRadioTest.syn

Besides creating lots of great sounds, I found that Syd can be used to easily
model communcation systems.  I have attached four patches which demonstrate
modulation and demodulation of a signal just like AM and FM radio.

When you run either of the test files, you will need to substitute your own
AIFF file.  A spoken phrase about 6 seconds long works best.  The other input
to the radio is the noise level, which is initially 0.  Try testing each radio
at a 0.1 noise level.

FmRadio.syn and AmRadio.syn each expect an input signal, and generate an
output signal which has been modulated then demodulated.  Try playing around
with the carrier frequency, filter frequency, and oscillator phase.  Note that
the models can’t use real radio carrier frequencies, since the frequencies
would be too high to represent at the 22 khz sampling rate.  As a result, the
filter cutoff is very low, and the signal quality is poorer than real radio.

  Flangomatic.syn
  FlangomaticTest.syn

Flangomatic.syn is another patch, which is a flanger effect that varies the
delay of the flanger based on the amplitude of the input.  Like the other
tests, you need to substitute your own AIFF file into FlangomaticTest.syn.

- David Kropf <dkropff@sprynet.com>