Signal Generators: Random (Noise) Generators

## noise

ar **noise** xamp, kbeta

### Description

A white noise generator with an IIR lowpass filter.

### Performance

*xamp* – amplitude of final output

*kbeta* – beta of the lowpass filter. Should be in the range of 0 to 1.

The filter equation is:

y_n = sqrt(1-beta^2) * x_n + beta Y_(n-1)

where *x_n* is white noise.

### Author

John ffitch

University of Bath, Codemist. Ltd.

Bath, UK

December, 2000

New in Csound Version 4.16

Signal Generators: Random (Noise) Generators