User Guide

572 Chapter 29 Ultrabeat
Note: The filter bypass button determines the signal flow. It doesn’t turn the ring
modulator on or off. Use the Ring Mod field for this (see above).
The Noise Generator
The fourth synth engine is the noise generator.
Noise contains—in a technical sense—all tonal frequencies; that’s why human hearing
can’t recognize any tonality in a noise signal. Despite this (or as a direct result of it),
noise is an indispensable ingredient when creating drum sounds. For this reason,
Ultrabeat’s noise generator is outfitted with extensive features.
To use the noise generator, you first need to turn it on. This can be done with the On/
Off button. When in an active state, the button is red.
The volume of the noise generator is controlled by the Volume knob. Volume can be
modulated by the sources found in the Mod and Via menus. For more information, see
“Modulation” on page 581
The noise generator has its own filter which functions independently of Ultrabeat’s
multimode filter. The four type buttons LP, HP, BP, and Byp allow you to switch the filter
between lowpass, highpass, or bandpass modes, or deactivate it (Byp).
The names of the filter types illustrate how they work: A lowpass (LP) filter allows
frequencies that are lower than the cutoff frequency (see below) to pass. This filter type
dampens higher frequencies, and makes the sound less sharp and bright.
A highpass (HP) filter has exactly the opposite effect. It filters out the lower frequencies
while leaving the higher frequencies untouched.