User`s guide

Delay Modulation

Delay Modulation allows a signal to control the instantaneous delay

time of another signal. (The asterisk after “Delay Mod” in the pop-

up menu is a reminder that the destination module must have a

Delay process or the modulation will have no effect.)

You can use Delay Modulation to perform many different pitch-

change effects on an audio selection. For example, you can use

modulation frequencies of 6 to 7 Hertz to create vibrato. The

vibrato depth and rate can themselves be controlled by other

signals; for example, a singer’s amplitude envelope might control

the vibrato depth, for a natural-sounding vibrato that breathes with

the music.

A sine wave modulator produces sinusoidal pitch changes, such as

vibrato, pitch-bend, warped record or drunken speech effects.

Oddly (until you stop to think about it), a triangle wave modulator

produces square-wave type pitch changes, where the pitch

alternates between a lower value and a higher value. A square wave

modulator causes gaps and overlaps in the output, with no pitch

change. A sawtooth wave can create simple pitch-shifting effects

with a single (lower or higher) pitch shift. Careful selection of the

modulation frequency and amplitude can minimize glitches at the

sawtooth’s vertical edge.

By combining feedback with the pitch-shift effect, you can produce

glissando-type sounds where the pitch keeps getting shifted lower

or higher each time through the loop.

You can also use Delay Modulation to produce Doppler effects,

rotating speaker effects, flanging, chorusing, comb filters and

psycho-acoustic panning effects.

A Delay Modulation of 100% will vary the destination’s delay

between 0 and twice the specified delay time.

Sample/Hold Modulation

Sample/Hold Modulation allows you to control the Sample/Hold

Time of another module. The destination module must use the

Sample/Hold process.