E-Mu MORPHEUS Operation Manual page 210

Z-PLANE FILTER DESCRIPTIONS
F145 GentleRZ4
A series of unevenly spaced resonant peaks converge to a single
peak as Morph Offset is increased. The Frequency Tracking offset
provides a somewhat muted sound (with several gentle bumps in
the mid-frequency range), moving toward a flat response. Sweep-
ing this filter produces some very smooth wa-wa effects. Using this
filter with the trumpet waves can produce sounds suggestive of
French Horns.
Morph: Modulating this sweeps filter peaks.
Freq. Tracking: Use this to control filter depth and cutoff.
Transform 2: Not used.
F146 Bendup/Swap
This complex filter features several series of tuned resonant peaks
and notches which can seem to bend up or down in pitch depend-
ing on the settings for the various Morph, Frequency Tracking,
and
Transform 2 parameters.
Morph: Use to tune the filter.
Freq. Tracking: Low values make upward filter sweeps appear to
bend pitch up. High values make pitch bend appear to go down.
Transform 2: Higher values make the filter sound more open.
F147 Bendup
This is similar to filter number 146, except that the bend is always
in an upward direction (if the Morph axis is swept in a positive
direction). Frequency Tracking can be used to tune the filter over a
nearly 2-octave range. Transform 2 is used to set the cutoff point
of the lowpass filter; higher values raise the cutoff point.
Morph: Sweeps harmonic peaks.
Freq. Tracking: Tunes the filter.
Transform 2: Increase for a brighter effect.
F148 SKWEEZIT
This filter features a complex series of peaks and notches. Varying
the Morph parameter varies the 'Q' settings for most of the peaks
and notches, while sweeping the frequency and Q of the first pole.
Morph: Sweeps one of the resonant peaks and varies 'Q'.
Freq. Tracking: Tunes the filter.
Transform 2: Controls resonance.
200 Morpheus Operation Manual