Filter Envelope Section - Roland JP-8080 Owner's Manual

For both HPF and BPF, setting the Key Follow to +32 will
allow you to play all notes with the same brightness.
* When [CUTOFF FREQ] is set to the center position, the
Key Follow effect will be clearly noticeable.
Ways to use Key Follow
If you are playing a brass-type sound for a solo, you might
rotate [KEY FOLLOW] to the left of center so that high
notes will be more mellow. If you are playing the brass
sound as a backing part, you might rotate [KEY FOLLOW]
to the right of center so that the tone will remain flat.
[LFO 1 DEPTH]
When LFO 1 (p.77) is applied to cutoff frequency, this para-
meter determines the depth of the effect. As the knob is
rotated to the right of center, the effect will increase. As the
knob is rotated to the left of center, the LFO 1 waveform
will be inverted, and the effect will increase. With a setting
in the center position, LFO 1 will not affect the cutoff fre-
quency (brightness).
Cutoff Frequency

FILTER ENVELOPE Section

[DEPTH] (Envelope Depth)
This adjusts the depth of the filter envelope. As the slider is
raised above the center position, the change will increase.
As the slider is lowered below the center position, the
change will increase in the opposite direction. With a setting
in the center position, the filter envelope will not affect the
brightness.
* Please note the following caution when Individual
Trigger (p.116) or External Trigger (p.121) is turned ON.
If the Trigger Destination is either FILTER or
FILTER&AMP, playing without receiving a trigger may
not produce the intended sound, since the filter enve-
lope effect will not apply.
* When applying a positive (+) envelope, the effect will be
more apparent if [CUTOFF FREQ] is set to a low setting.
When applying a negative (-) envelope, the effect will be
more apparent if [CUTOFF FREQ] is set to a high set-
ting.
[A] (Attack Time) / [D] (Decay Time)
[S] (Sustain Level) / [R] (Release Time)
These parameters set the Attack Time, Decay Time, Sustain
Level, and Release Time of the filter envelope. Raising a
slider will increase the corresponding value.
time
A: The time from when the note is played until the maxi-
mum brightness is reached
D: The time until the brightness reaches a steady level
S: The level at which the brightness will remain steady
R: The time from when the key is released until the sound
returns to its original brightness
Cutoff Frequency
Cutoff Frequency
A D
S
Key-on Key-off
time
R
time
75