Roland JV-880 - TVF Parameters TVF Type

#TVF
parameters
TVF stands
for Time
Variant Filter,
a
filter
which
changes
over time.
The filter
cuts
a specific
range
of
frequencies,
and changes
the
brightness
of the sound.
In this
section,
by setting
the type
of
the filter and
cutoff
frequency,
the
sound
generated
by
the WG
and
pitch
envelope
is
processed.
TVF
Envelope
4
TVF
•
Envelope
depth
M
• Cutoff
frequency
•
Resonance
•
Resonance
mode
WG
"
TVA
•
TVF
type
J
TVF
type
P
a t
G h
:
T o n e
TUF
t.ype
=
LPF
C-2--]
This
parameter
determines
the filter
type,
or
what
frequencies
are
filtered
(removed).
Settings:
OFF/LPF/HPF
OFF
:
Filter
doesn't
function.
LPF
:
Low
pass filter.
This filter
removes
frequencies
above the cutoff
frequency,
and is
the more
commonly
used filter
type. Since
the high
range
frequencies
are
cut,
the
sound
becomes
more mellow.
HPF
:
High
pass filter.
This filter
removes
frequencies
below the
cutoff
frequency.
The
sound
becomes
brighter
as
low range
frequencies
are
removed.
Leve
LPF
ii
Leve
HPF
ii
A
Cutoff
frequency
Frequency
4
Cutoff
frequency
Frequency
6^4