The MATHS music synthesizer module is an analog computer designed for musical purposes. Amongst other things, it will allow you to:

features

• Generate a variety of linear, logarithmic, or exponential triggered or continuous functions

• Integrate an incoming signal

• With no signal applied, generate a variety of linear, logarithmic, or exponential functions

• Add, subtract and OR up to 4 signals

• Generate analog signals from digital information (Gate / Clock)

• Generate digital information (Gate / Clock) from analog signals

• Delay digital (Gate / Clock) information

• If the above list reads like science rather than music, here is the translation:
  Voltage Controlled Envelope or LFO as slow as 25 minutes and as fast as 1khz

• Apply Lag, Slew or Portamento to control voltages

• Change the depth of modulation and modulate backwards!

• Combine up to 4 control signals to create more complex modulations

• Musical Events such as Ramping up or Down in Tempo, on command

• Initiating Musical events upon sensing motion in the system

• Musical note division and / or Flam

• Perfect for modulating the DPO and just about anything else

• Page for Classic version of MATHS

More Info: http://www.makenoisemusic.com/modules/maths