User manual
Overview:
MATHS is an analog computer designed for musical purposes. Amongst other things, it allows you to:
1. Generate a variety of linear, logarithmic, or exponential triggered or continuous functions
2. Integrate an incoming signal
3. Amplify, attenuate and Invert an incoming signal
4. Add, subtract and OR up to 4 signals
5. Generate analog signals from digital information (Gate/Clock)
6. Generate digital information (Gate/Clock) from analog signals
7. Delay digital (Gate/Clock) information
If the above list reads like science rather than music, here is the translation:
1. Voltage Controlled Envelope or LFO as slow as 25 minutes and as fast as 1khz
2. Apply Lag, Slew or Portamento to control voltages
3. Change the depth of modulation and modulate backwards!
4. Combine up to 4 control signals to create more complex modulations
5. Musical Events such as Ramping up or Down in Tempo, on command
6. Initiating Musical events upon sensing motion in the system
7. Musical note division and/or Flam
MATHS revision 2013 is a direct descendant of the original MATHS, sharing the same core circuit and generating all the fantastic
control signals that the original was capable of generating, but with some upgrades, additions, and evolutions:
1. The layout of the controls has been changed to be more intuitive and to work more uidly with the forth-coming CV
Bus and existing modules in our system such as the DPO, MMG, and ECHOPHON.
2. The LED indication for signals has been upgraded to show both positive and negative voltages as well as to increase
the display resolution. Even small voltages are readable on these LEDs.
3. As Make Noise now oers a Multiple the Signal Output Multiple (from the original MATHS) has been changed to a
Unity Signal Output. It allows for creating two variations of output, one at unity and the other as processed
through the Attenuverter. Also allows for ease in patching function responses not possible with the Vari-
Response control alone (see pg. 13 ).
4. An Inverted SUM Output has been added for greater modulation possibilities.
5. LED indication for the Sum Bus has been added for increased signal awareness.
6. LED indication added to show the state of the End Of Rise and End Of Cycle.
7. End Of Cycle Output is now buered for improved circuit stability.
8. Added reverse power protection.
9. Added +/-10V oset range. User has choice of +/-10V oset at CH. 2 or +/-5V oset at CH. 3.
10. Added greater Logarithmic range in Vari-Response control allowing for East Coast style Portamento.
11. The evolution in the circuit is the Cycle Input which allows for voltage control of the Cycle state in Channels 1 and
4. On Gate High, the MATHS Cycles. On Gate low, MATHS does not Cycle (unless the Cycle button is
engaged).
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