Low Frequency Oscillator - Sequential prophet 5 User Manual

Low Frequency Oscillator

The LFO is a special-purpose oscillator that produces a frequency that is
typically below the range of human hearing. The LFO is used for peri-
odic modulation such as vibrato (periodic pitch modulation) filter modu-
lation, and pulse-width modulation. The LFO can be routed to any or all
of these destinations using the controls in the - section.
wheel mod
The LFO produces three waveshapes: sawtooth, triangle, and square.
Noise is also available as a modulation source in the - section.
wheel mod
The Low Frequency Oscillator and Wheel-Mod sections
Triangle wave is bipolar. That is, its waveshape is positive for half of its cycle
and negative for the other half. This makes it possible to generate a vibrato
that goes alternately sharp and flat in equal amounts on either side of a center
frequency. The square and sawtooth waves generate only positive values.
In the case of the square wave, this makes it possible to generate natural-
sounding trills.
Sawtooth Triangle Square
0
LFO waveshapes
Prophet-5 User's Guide Low Frequency Oscillator 31