FXpansion DCAM Synth Squad Operation Manual - Manual (Page 61)

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PW (Pulse Width)
Again, you probably won’t have seen a pulse width control on an LFO before. This function changes the curve of each
LFO cycle in a similar way to changing the pulse width on a pulse oscillator. It works on all shape modes.
The following diagram illustrates how it works on a sine shape:
Sine LFO, Pulse Width 0
0.5 1.0 1.5 2.0
Time mS
0.4
0.2
0.2
0.4
Voltage V
0.5 1.0 1.5 2.0
Time mS
0.4
0.2
0.2
0.4
Voltage V
Sine LFO, Pulse Width 75%
Ramp
The Ramp generator is a versatile gateable modulator that
is intended for use with the TransMod system or as a gate
source for other gateable modulators.
When triggered, its value drops immediately from 1 to 0.
Then, after a period of time defined by the
Delay parameter
(during which its value remains at 0), it rises to 1 over a
period defined by the
Rise parameter.
It can be seen as a simple inverted envelope with an instant
attack and a variable decay, although it is triggered like an
LFO rather than gated like an envelope, and has a definite
period, rather than an indefinite period of sustain.
These are the main intended uses for the Ramp:
• A delay before the LFO is triggered – set the LFO
Gate to
Ramp, and use the Ramp’s Rise time to set a delay time
• A simple, fixed decay envelope using the inverted Ramp as a TransMod slot source (the Rise control sets the decay)
• A ramp-up scaling function – use it as a scaler in a TransMod slot to scale an LFO over time (Rise) from 0 to 1
You can also use this method to set a delay on an LFO, using the Ramp’s
Delay parameter.
Note that that the Gate control is not labelled on the Ramp.
Dly (Delay)
The Delay parameter sets the delay after the ramp value drops from 1 to 0, and before it begins
rising to 1. It is scaled by the value of the Mult control.
Rise
The Rise control adjusts the time taken for the ramp to rise from 0 to 1. It is scaled by the Mult
control.
Mult (Multiplier)
This control is a multiplier for the Ramp’s Delay and Rise times. By default, it is set at 100%,
meaning that the Delay and Rise times occur exactly as set on the respective controls. The Mult
control allows you to multiply these times between 0% and 200%.
Sync
With the Sync button enabled, the Delay and Rise times are set in BPM units. With the Sync button disabled, these
parameters are set in seconds.