Yamaha CS-80 Instruction Manual page 21

/lusica!
examples
of
filter
action.
Shaded
areas are
NOT
audible
beAr they
are
blocked by the
filters.
Edge
of
shaded areas represelL
Iter
cutoff point.
HPF & LPF
filters
wide
open.
tf»
*
^^
g
* ' *^
=
^
?^
;
*
-HPF
Cutoff
LPF
Cutoff-
*y
'
^
1
Fundamentai Note
.
Overtones (Harmonics)
.
HiGh niCf
MAf itm
HPF
completely
closed
LPF wide open
i
m
^:^1;^:^
No sound
gets
through.
17
H\GH uttiH
mW
i^IGH
,»•
L»
.»*
Hff RISk
LPf
HPF
wide open
LPF
partially closed
1^
m
^^*=^
^=M.
4^
^
a* t^
*
Upper overtones
are
eliminated
(less
bright sound).
HKH
H|G>H
H^H
iM IM LM UM
HPf
RFSm
IPF fits.
HPF
partially closed
LPF
partially
closed
^
"^-m
M-^
"
')' .
O- Narfow bandpass effect
- Some
harmonics only-
H(CH H&i Niex
\m
JJ*
HPF
wide open
LPF
completely
closed
i
=^
=*^
^R*Lq^
*)*
.
O
Some fundamental may
stiti
be heard.
HIGH HIGH HIGK
LtN* LOW LOW
U»
HF
RES- LPf
RtS,
HPF
wide open
with
no
resonance
LPF
partially closed
with
maximum
resonance
i
-.
'^f
^
^M
t^:^
w
LPF Resonance
'. )'
.
'
Resor\ance emphasizes the frequency
at
cutoff.
HPF
partially
closed
LPF
completely closed
i
^
b..
.
'
'
*'
,
»
J*
^
€
No
sound
gets
through
(
no bandpass).
HII^I'
HISh
^Pf RES' LPf «£S.
HPF
partially
closed with
maximum
resonance
LPF
wide open with no
resonance
m
^^
^^
HPF
Resonance
Resonance emphasizes
the
frequency
at
cutoff.
HPF
partially
closed
LPF wide open
|i
^^^
,vt*
Fundamental and lower overtones eihminated.
HiG- MiGh
HW
FifS- LPF
fits
HPF
partially closed with
maximum
resonance
LPF
partially closed with
maximum
resonance
i
^
,
1
jf«
3*5^*
Narrow bandpass with resonance
(move BRI LLIANCE
[7l
for
a
"wah-wah").