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#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
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