Rise/Fall/Vari-Response
LOG
EXPO
LINEAR
These controls shape the signal that is output at the Unity Signal Output and Variable Outputs for CH. 1 and 4. The Rise and Fall
controls determine how fast or slow the circuit responds to signals applied to the Signal Input and Trigger Input. The range of
times is larger than the typical Envelope or LFO. MATHS creates functions as slow as 25 minutes (Rise and Fall full CW and
external control signals added to go into "slow-ver-drive") and as fast as 1khz (audio rate).
Rise sets the amount of time the circuit takes to travel up to the maximum voltage. When triggered the circuit starts at 0V and
travels up to 10V. Rise determines how long it takes for this to happen. When used to process external control voltages the
signal applied to the Signal Input is either increasing, decreasing or at a steady state (doing nothing). Rise determines how fast
that signal could increase. One thing MATHS cannot do is look into the future to know where an external control signal is
headed, therefore MATHS cannot increase the rate at which an external voltage changes/ moves, it can only act upon the present
and slow it down (or allow it to pass at same speed).
Fall sets the amount of time the circuit takes to travel down to the minimum voltage. When triggered the voltage starts at 0V and
travels up to 10V, at 10V the upper threshold is reached and the voltage begins to drop back down to 0V. Fall determines how
long it takes for this to happen. When used to process external control voltages the signal applied to the Signal Input is either
increasing, decreasing or at a steady state (doing nothing). Fall determines how fast that signal could decrease. Since it cannot
look into the future to know where an external control signal is headed, MATHS cannot increase the rate at which an external
voltage changes/ moves, it can only act upon the present and slow it down (or allow it to pass at same speed).
Both Rise and Fall have independent CV inputs for voltage control over these parameters. If attenuation is required, use CH. 2 or
CH. 3 in series to the desired destination. In addition to the Rise and Fall CV Inputs there is also the Both CV Inputs. The Both CV
input changes the rate of the entire function. It also responds inversely to the Rise and Fall CV Inputs. More positive voltages
make the entire function shorter and more negative voltages make the entire function longer.
Vari-Response shapes the above rates of change (Rise/Fall) to be Logarithmic, Linear, or Exponential (and everything in-between
these shapes). With the LOG response, the rate of change decreases as the voltage increases. With EXPO response, the rate of
change increases as the voltage increases. The Linear response has no change in rate as the voltage changes.
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Summary of Contents for MATHS
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