Copyright 1998, 1999, 2000, 2001 Matt Flax <flatmax@ieee.org>

MFFM vectorBass is an example of a few things :
a] A melody line generation tool which lets you plot the pitch, volume and
   'generic waveform sound'. This means you can essentially hear a piece of
   music, grab and plot the synth. waveform and generate your own melody lines
   using this synth. Whether the synth be a persons voice, bass or whatever !
   This is accomplished by merging a FM (frequency modulator) and a Vector
   Graphics application (XFig).
b] Rapid prototyping using a vector graphics application as the front end
   and a custom engine as the back end.

For simple use ....
Tyep 'make' and compile the program vectorBass
Open doubleOctave.fig in xfig :
			xfig doubleOctave.fig
Run octave and execute the function output2wav :
			output2wav "doubleOctave.fig" "doubleOctave.wav"

HOME PAGE : http://mffmvectorbass.sourceforge.net/

REQUIREMENTS : C++ compiler, XFig and octave http://www.octave.org

NOTES:
* Freq - The frequency with which the waveform is cycled ... 
  To specify the same waveform at multiple frequencies, edit this like so ...
  Freq 90 180 365
  This would cycle the same waveform at 3 different frequencies, 
  90, 180 and 365 Hz All frequencies would be present in the output wav file.
* Range - The semi-tone count from central scale to top or bottom
* Time - The total time for the output waveform

* Pitch curve plots the pitch vs. time of the melody line
* Volume curve plots the volume vs. time of the melody line
* Pitch and Volume operate relative to the same scale

* Waveform is a plot of one cycle of the curve to be cycled. It determines
  'generic sound' of the synth.
* Waveform is relative to its own scale.

* Alter the system to use ideal sin waveforms, you need 
  to alter 'vectorBass.C' simply uncomment :
	//	audio->audio[(int)n]+=(short int)rint(volume*vol[j]*amplitude*(lastVal[j]=sin(rads)));
  and comment out
	audio->audio[(int)n]+=(short int)rint(volume*vol[j]*amplitude*(lastVal[j]=(*waveForm)[rads]));
  PAY SPECIAL ATTENTION to the volume variables ... in particular vol is 
  log scaled (from the code) :
  for (int i=0;i<(int)srcCnt;i++){
    vol[i]=pow(2.0,-(log(Freq.next())/log(2.0)-log(lowFreq)/log(2.0)));
  For psycological experiment you may want to alter this.
  Variable 'volume' itself is the volume curve drawn in the vector graphic
  application. This should not require alteration.