Roland JV-80 Owner's Manual page 79

1.
Patch
Edit
%WG
(Wave
Generator)
This
calls
up
the
waveform
(source
wave)
data stored
in internal
memory, on
an optional
PCM
card or expansion
board,
and
generates an
original
wave
form.
At
the
same
time,
it
also controls the pitch of the
waveform.
Generally,
the
waveform
determines
the basic characteristics and
quality
of the sound.
9
TVF
(Time
Variant
Filter)
This shapes the
sound by
processing the
original
waveform
generated
by
the
wave
generator.
It
determines
the
timbral
qualities
of
the
sound by
cutting or boosting the frequency elements
in
the original
waveform.
•
7VA
(Time
Variant Amplifier)
This
controls the
volume of
the
sound
that
is
output.
ENV
(Envelope Generator)
Independent envelope
generators are available for the
WG, TVF
and
TVA,
and
they apply changes over time
to
the
pitch,
frequency elements and
level
of the sound.
The envelope has
three different time
settings
and
three level
settings
from
the pressing of
a
key (key
on); the third level
is
the sustain
level.
There
is
one
setting for
each time and
level after the
key
is
released (key
off).
(However,
the key
off level
is
fixed
at
for the
TVA
parameters.)
mLFO
LFO
can be applied
to the
WG, TVF
and
TVA,
for
adding
periodic
change
to the
pitch,
frequency elements and
level of the sounds.
It
adds expression
to the
sound by
providing
waveform
motion and
vibration.
The
speed of
the
LFO
is
global that
is,
the
same
speed
is
used for the
WG,
TVF
and
TVA
however,
the
depth can be
set
independently.
There
are
two LFOs,
LFO
I
and
2,
and they can be used simultaneously
to
modulate
the
same
parameter.
79