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PWM

PWM stands for Pulse Width Modulation. This controls the maximum PWM modulation

amount of the LFO (see speed parameter). PWM alters the symmetry setting (the middle

point) of the oscillator over time. You can use PWM on any waveform, but it is most

commonly used with the square wave where it alters the pulse width of the waveform.

Speed

The amount of PWM (Pulse Width Modulation) is altered over time by a sine-wave LFO. With

speed you control the speed of this LFO. Of course you need to open the PWM amount to

hear the result of any speed changes.

Volume

With volume you control the volume of the oscillator before it goes into the 'Filter section'.

Note: if you set the filter "pre-filter distortion" to edgy, the volume of the oscillator drives the

distortion of the filter, and so you can add distortion with lower oscillator volume settings.

Output

This controls whether an oscillator is output to the 'filter section'. With FM and Ring

modulation in use, you may not want the modulating oscillator output to be fed into the filter.

So with Osc.1 and Osc.2 you have the option to shut off the output to the filter, when you are

using them as a modulation oscillator.

Oscillator Cross Modulation

This controls the cross modulation options for Osc 2 and Osc 3. When you use either in FM or

ring modulation, you'll need to keep the modulation oscillator on but not heard, so you can

turn off the output of the oscillator to the filter using the output button.

With FM modulation the oscillator modulates the pitch of the target oscillator, so you get

overtones to the original sound. With Ring modulation, both oscillators are multiplied together

and you get sound that uses a combination of both sources.

Modulation Type

The following cross modulation types are available. All of these generate additional overtones

in a slightly different manner. Please try and experiment with modulation type and amount to

accommodate yourself with the subtle and not so subtle characteristics of each modulation

type.

Ring 1 (Classic ring modulation)

PM 1 (Phase Modulation)

FM 1 (Frequency Modulation)

Sign 1

Max 1

Min 1

S&H 1

Mix 1

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