E-Mu Ultraproteus Operation Manual page 228

F157 Intervallc4
This filter is similar to the 'Bendup/Swap' filter, but here the effect is even
more pronounced. With Frequency Tracking set to 000, pushing the Morph
Offset higher produces and downward sweep of a series of very resonant
harmonics. Set Frequency Tracking to 255, however, and the sweep
reverses. Other effects can be achieved by experimenting with the interac-
tion between these two parameters. Because of its metallic overtones, this
filter can make a good choice for simulating certain percussion instru-
ments, such as steel drums and kalimbas.
Morph: Causes a downward sweep of harmonic intervals.
Freq. Tracking: Reverses Morph sweep.
Transform 2: Not used.
F158 EvenCuts4
This filter produces a series of notches in the frequency spectrum (based on
the even harmonic series), which turn into small bumps when morphed.
Morph: Controls the depth of the notches/height of the bumps.
Freq. Tracking: Tunes the notches/bumps.
Transform 2: Not used.
F159 OddCuts.4
This filter produces a series of notches in the frequency spectrum (based on
the odd harmonic series), which turn into small bumps when morphed.
Morph: Controls the depth of the notches/height of the bumps.
Freq. Tracking: Tunes the notches/bumps.
Transform 2: Not used.
F160 PWMtrans.4
This filter produces a series of harmonically related notches, which become
peaks as the filter is morphed upward — the effect can be similar to pulse
width modulation, depending on the source material. As Frequency Track-
ing is moved upward, the peaks/notches move toward the high end of the
frequency range, and 'Q' is increased, producing more resonant sounds.
Morph: Controls depth of the peaks/notches.
Freq. Tracking: Tunes the filter and controls 'Q' amount.
Transform 2: Not used.
F161 HiEndQ.4
This filter behaves much like a resonant low-pass filter.
Morph: Sweep this for low-pass filter effects.
Freq. Tracking: Sets the initial cutoff point of the filter.
Transform 2: Not used.
Z-PLANE FILTER DESCRIPTIONS
Chapter 11: Reference Section 207