Morpheus Operation Manual174
Z-PLANE FILTER DESCRIPTIONS
The Z-Plane filters are categorized into groups of: Flangers, Vowel
Filters, Traditional Filters, Parametric Filters, Instrument Models, etc. A
suffix of “4” or “.4” indicates filter is square, not cube and does not
contain a Transform 2 axis.
FLANGERS
Members of this filter family contain a series of notches with various
depths, widths and frequencies. The traditional flange effect is created
by sweeping different frequency notches with a real time controller.
Another application for flangers is enhanced dynamic expression at
note-on by using velocity to modulate the frequencies of the notches
and overall cut-off. These filters can simulate different pick positions
on guitar strings and various locations of drum, mallet and cymbal
strikes, etc.
F000 Null Filter
F001 Low Pass Flange .4
Morph: Starts with high end roll-off and deep, narrow notches at
500Hz, 100Hz, 200Hz, 400Hz and 800Hz and transforms into less
deep, wider notches at 11799Hz, 13813Hz, 16169Hz, 17495Hz and
18928Hz with no roll-off.
Freq. Tracking: Moves the notches in the first frame of the Morph
axis up two octaves. The second frame is completely flat. Tracks
filter to keyboard frequencies with Note-on key assignment.
Controls brightness.
Transform 2: Not used.
F002 Low Pass Flange Bk .4
A series of deep notches spaced at octave intervals morphing to
less severe, more closely clustered high frequency notches. An
additional lowpass filter is at the start of the Morph, opening as
the maximum offset is reached.
Morph: Modulate this to create multi-flanging effects.
Freq. Tracking: Tracks flangers across the keyboard. Velocity con-
trols brightness.
Transform 2: Not used.
F003 Flange 2 .4
This flanger has a series of 6 notches placed at octaves, not lin-
early. Frame 1 starts with notches at 50, 100, 200, 400, 800, and
1600Hz.
Morph: Moves all of the notches up in frequency to above 10kHz,
with decreasing depth. This means that the deepest flanging effect
is obtained in the first 1/3 to 1/2 of the morph parameter range.
Note that deep notches can cut out the fundamental of a sound
which might decrease the volume of the note.
Freq. Tracking: Moves the notches to 400, 800, 1600, 3200, 6400,
12800Hz, which allows key tracking to keep the “sweet spot” of
the flanger centered over the harmonics of the note.
Transform 2: Not used.
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