Chapter 11: Reference Section 181
Z-PLANE FILTER DESCRIPTIONS
F040 Vow>Vow2
Morph: Sweeps between “ee” and “oh”.
Freq. Tracking: Provides key tracking to fix partials.
Transform 2: Provides volume and brightness control with velocity
and/or key position.
Comments: Morphing sweeps between vowels- slight “E” effect.
F041 YahYahs.4
Morph: Sweeps between “eeya” and “aa”.
Freq. Tracking: Introduces frequencies two octaves higher for key
tracking and brightness control.
Transform 2: Not used.
F042 YoYo.4
Morph: Sweeps between “ee” and “oh” sounds.
Freq. Tracking: Introduces frequencies two octaves higher for key
tracking and brightness control.
Transform 2: Not used.
F043 VowelSpace
Dr. William Martens developed this filter cube, which allows any
vowel to be approximated with only two parameters.
Morph: Sweeps the first formant of the vowel from 150Hz up to
850Hz.
Freq. Tracking: Sweeps the second formant from 500Hz up to
2500Hz.
Transform 2: Changes the vowel “stress.” Low stress means that all
of the vowel frequencies collapse to a relaxed “schwa” sound.
Maximum Transform produces the maximum excursion (stress)
for all of the vowel frequencies.
STANDARD
These filters are variations on traditional 2 and 4-pole filter models
F044 BrickWalLP.4
This filter features an extreme rolloff at the cutoff point, which
moves from 100Hz to 3000Hz. Use this filter to produce low-
resonance filter sweeps, or to selectively filter out high frequencies
in the source sound.
Morph: Controls filter cutoff.
Freq. Tracking: Controls filter depth and provides gentler roll-off
beginning ~3000Hz.
Transform 2: Not used.
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