Roland V-Combo VR-09 Workshop Manual page 13

FILTER Controls—Each partial's sound is a stack of sound waves
vibrating over and over at different speeds, or "frequencies," and
therefore different pitches. Combined, they act as the partial's
overtones, producing its tonal character. By removing frequency
ranges from a partial, you change its tone. Each frequency range is
called a "frequency" for short.
Setting This setting:
R sets how long it takes
for the Cutoff value to
return to its manual
setting when you let go
of the key.
ENV DEPTH determines how strongly
the filter envelope affects
the Cutoff setting.
The A, D, S, and R and ENV DEPTH FILTER envelope settings
allow you to automatically change the manual Cutoff setting over
time. Without an envelope, the partial's frequencies are filtered
according the manual Cutoff setting over the length of the note, so
the note has one bright/warm character throughout. An envelope
allows you to automatically move the Cutoff value over time,
producing automated tonal changes as the note plays to make it
more animated.
Can be set to:
0 to 127
-63 to +63. Positive
values push the cutoff
above its manual
setting. Negative
values lower it.
AMP Controls—These controls set the final volume and panning of
the partial and determine the way that its volume changes over time.
Setting This setting:
PAN determines the left/right position
of the partial in the VR-09's stereo
output.
LEVEL sets the volume of the partial.
Each partial has its own volume,
and then there's a TONE LEVEL
setting for the entire SYNTH sound,
as described in "SYNTH Sound
Controls" on page 9.
A sets how long it takes for a partial
note to reach its LEVEL setting,
above, after a key is pressed.
D sets how long it takes the partial's
volume to change from its manual
LEVEL setting to its Sustain setting,
described next.
S sets a volume that remains in place
until you let go of a key.
R sets how long it takes for the note
to fade away to silence after you
release its key.
As with a filter envelope, the A, D, S, and R envelope settings allow
you to automatically change the partial's manual LEVEL setting
over time. This allows you to make the sound of the partial more
expressive by adding dynamic movement to its notes.
Can be set to:
64L (al the way
left) to 63R (all
the way right)
0 to 127
0 to 127
0 to 127
0 to 127
0 to 127
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