Sequential Prophet VS - CUTOFF AND RESONANCE

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CUTOFF
This parameter adjusts the initial cuto frequency of the lter, over an eleven-
octave range.
To adjust lter cuto:
1. Press Cuto.
The top line of the display shows the cuto value from 0-99 and the resonance
value. The bottom line displays the envelope amount value.
2. Adjust slider to desired value.
The scaling of this parameter is such that to raise or lower the cuto by an
octave, you would add or subtract about 9 units. To isolate the eect of
Cuto, set Env Amount to 0, and switch all lter modulation sources o:
a. Under MODULATION, press Dest Select until the lower line reads "FIL-
TER" or "FIL ENV".
b. Set the lter destination o with the slider.
c. To nd other sources aecting the lter, press Source Select until the lower
line reads "FILTER: ON" again.
d. Press Dest Select, then turn o with the slider.
e. Repeat the last two steps until no modulation sources are routed to the
lter. (For more information on modulation, see Section 10.)
Cuto is one of the most important synthesizer functions and has a critical
eect on the timbre, but the Cuto parameter is only one source of cuto
control. Note that since there are so many sources of lter cuto control, it
is possible to inadvertently disable the lter by raising Cuto too high, or
applying so much envelope or modulation that the cuto frequency is pushed
beyond the normal audio range, therefore ceasing to have any ltering eect.
If nothing can be heard, also check that the cuto is not set too low, or being
driven too low by any modulation sources (see Section 10).
Note that if you want the lter cuto to increase with key position— which will
often be the case—this must be specically patched through the modulation
module, (in other words, route the keyboard source to the lter destination.)
When the keyboard modulation amount is set near 50, the keyboard maintains
the cuto parallel to the oscillator frequency. With the lter thus "tracking" the
keyboard, cuto frequency is maintained at a constant point relative to the
frequency of the note being played. Regardless of the position of the note,
the relative harmonic energy is the same. This results in a consistent timbre
throughout the program. You can demonstrate this by using resonance to
focus on a specic harmonic, while playing over the playback range. The
harmonic interval will remain the same despite the key played.
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