Filter Controls - Sequential prophet 5 User Manual

3. Return the
then turn the
4. Rotate the filter's
band of frequencies near the cutoff is amplified.
5. Now toggle between the filters by pressing the
to the differences in tone. The differences become more apparent with
higher and lower resonance settings.
In the previous examples, you controlled the filter cutoff by hand. In
most cases, you will use the Filter Envelope to do this. To learn more
about the Filter Envelope see page 25.

Filter Controls

Rev Switch: 1/2, 3
SSI 2140 low-pass, 4-pole, 24 dB per-octave resonant filter. The Rev 3
filter is a Curtis CEM 3320 low-pass, 4-pole, 24 dB per-octave resonant
filter. Both filters can self-oscillate when
—Sets the filter's cutoff frequency.
Cutoff: 0...10
Resonance: 0...10
the cutoff frequency. High levels of resonance can cause either filter to
self-oscillate and generate its own pitch.
Envelope Amount: 0...10
filter envelope to the filter's cutoff frequency. Any setting above zero
means that each time you strike a key, the filter envelope controls how
the filter opens and closes. Higher amounts more dramatically affect the
cutoff frequency.
Keyboard: off, half, full
keyboard to the filter's cutoff frequency. Selecting
that the higher the note played on the keyboard, the more the filter opens.
This is useful for adding brightness to a sound as higher notes are played,
which is typically how acoustic instruments behave. If both
are off, keyboard filter tracking is off, meaning that filter frequency is unaf-
fected by playing higher or lower notes on the keyboard.
24 Filter
knob to its halfway position, hold down a note again
cutoff
knob about halfway up.
resonance
knob again and listen to the sound change as a
cutoff
—This selects the filter type. The Rev 1/2 filter is a
—Emphasizes a narrow band of frequencies around
—Sets the amount of modulation from the
—Sets the amount of modulation from the
switch and listen
rev
is set to its maximum.
resonance
or
half
means
full
and
half full
Sequential