Moog MP-201 User Manual download pdf (Page 11)

MP-201 User’s Manual

Page 12

MP-201 User’s Manual

Page 13

trills, or slow rhythmic sweeps, while oscillations in the audio range can be used

to create truly wild sonic effects, including frequency modulation (FM), amplitude

modulation (AM), and timbre modulation.

A CV can also be a randomly generated signal. If it is continuously random, it is called

Noise, similar to the static white noise that can be picked up on an analog radio

tuned between stations. If it is a random voltage that changes only at regular periodic

intervals, then we refer to this type of voltage as Sample and Hold, or S+H.

The MP-201 offers a number of LFO waveforms as shown in the gure below. Each

graph shows the way the voltage varies with time.

The height of the LFO waveform shows its amplitude. In the MP-201, this parameter

is called the ‘LFO AMOUNT’

The center of the LFO waveform (along the horizontal axis) can be shifted up or

down by means of an offset voltage. This means that you can have a LFO centered

around 0V, or shifted up and centered around +2.5V, for example. In the MP-201, this

parameter is called the ‘LFO OFFSET.’

Finally, a Gate is a type of analog control signal that is either low or high, and changes

abruptly, not smoothly. A Gate is used to trigger events, or to turn circuits ON or OFF.

The MP-201 outputs a Gate that is 0V = OFF and +5V = ON.

Triangle waveform Square waveform Ramp waveform

Sawtooth waveform Sample & Hold

waveform

Noise

Gate: OFF ON OFF

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Moog MP-201 User Manual Page 11