The Noise module provides the basic material to produce a whole spectrum of sounds that do not have a defined pitch.
White noise can be used to produce sounds such as wind, rain and surf.
`Coloured' or `Pink' noise, which is white noise with the low frequency components boosted, is used for sounds having a strong bass content, such as the rumbling of thunder. The ASM-2 takes the fixed `pink' noise circuit of the ASM-1 and adds two new controls that allow the user to increase or decrease the Red (higher frequency components) and the Blue (lower frequency components) of the `coloured' noise and provides a more flexible noise source.
A further, third stage, provides a random voltage output.
In addition to modulating VCO signals, noise can be added to these signals to simulate wind noise in organ pipes and woodwind instruments.
© Copyright 2000. All rights reserved. Revised: December 12, 2006