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Table Of Contents
Setting the Ultrabeat Filter Slope
Most filters don’t completely suppress the portion of the signal that falls outside the
frequency range defined by the Cutoff parameter. Frequencies that are located close to
the cutoff frequency are generally reduced less than those that are farther away. The
higher the slope value, the more apparent the level difference is between frequencies
that are near to the Cutoff frequency and those that are farther away from it.
The slope (curve) chosen for the Filter expresses the amount of rejection in decibels per
octave. The Filter offers two different slopes: 12 dB and 24 dB per octave. The steeper
the slope, the more severely the level of signals below the cutoff frequency are affected
in each octave.
Using Ultrabeat’s Filter Cutoff Parameter
The Cutoff Frequency (Cut) parameter controls the brilliance or determines the center
frequency of the signal.
In a lowpass filter, the higher the cutoff frequency is set, the higher the frequencies of
signals that are allowed to pass.
In a highpass filter, the cutoff frequency determines the point where lower frequencies
are suppressed, with only upper frequencies allowed to pass.
In a bandpass/band-rejection filter, the cutoff frequency determines the center frequency
for the bandpass or band-rejection filter.
Using Ultrabeat’s Filter Resonance Parameter
The Resonance (Res) parameter emphasizes or suppresses portions of the signal above
or below the defined cutoff frequency, or determines the width of the band that surrounds
the cutoff frequency.
In a lowpass filter, Resonance emphasizes or suppresses signals below the cutoff
frequency.
In a highpass filter, Resonance emphasizes or suppresses signals above the cutoff
frequency.
In bandpass/band-rejection filters, resonance determines the width of the frequency
band that surrounds the center frequency (set with the Cutoff Frequency parameter).
Using Ultrabeat’s Distortion Circuit
The Distortion unit provides either a bit crusher or distortion effect.
The distortion effect is modeled on an analog distortion unit, which distorts the sound
by overdriving the level. The bit crusher uses a process that deliberately reduces the
digital resolution of the sound, measured in bits, achieving an intentionally digital
coloration of the sound.
270 Chapter 11 Ultrabeat