E-Mu MORPHEUS Operation Manual page 194

Z-PLANE FILTER DESCRIPTIONS
F057 HPSweep.4
A highly resonant high-pass filter which generally rolls off fre-
quencies steeply below ~2.5kHz.A low Morph Offset will create a
relatively flat response (with a gentle cut to the lower frequencies),
so the most subtle filtering is achieved with Morph Offset set to
000, and Frequency Tracking set to 255.
Morph: Positive values move the filter higher in frequency.
Freq. Tracking: Positive values move the filter toward a flatter
curve.
Transform 2: Not used.
F058 HiSwept1.4
A highly resonant filter with 'Q' increasing as the Morph or Fre-
quency Tracking parameters are swept upward. Increase the value
for Frequency Tracking to accentuate this brightness and reso-
nance.
Morph & Freq. Tracking: Control filter cutoff and resonance.
Transform 2: Not used.
F059 HghsSwpt2.4
A more open-sounding version of filter 058. Raises both the filter
cutoff point and filter 'Q'.
Morph & Freq. Tracking: Raises both the filter cutoff point and
filter 'Q'.
Transform 2: Not used.
F060 HighAccent.4
The center frequencies remain constant throughout all permuta-
tions of this filter along the Morph and Frequency Tracking axes;
what changes are the 'Q' settings for the various poles and zeros.
This allows you to accentuate various resonances, (generally in the
upper frequency ranges), of the source sound by manipulating the
Morph Offset point and the Frequency Tracking parameter.
Morph: Controls 'Q' of the various poles.
Freq. Tracking: Higher values produce brighter, thinner sounds.
Transform 2: Not used.
F061 HiPassSweep.4
A high-pass filter with the cutoff point moving from about 160Hz
to upwards of 2.5kHz (with a sizable gain in resonance) as the
filter is morphed upward.
Morph: Higher settings increase cutoff frequency and 'Q'.
Freq. Tracking: Controls filter depth.
Transform 2: Not used.
184 Morpheus Operation Manual