Clavia lead 2x Guida Utente
11. Synthesis basics: The filter
NORD LEAD 2X V1.0x
Page 86
As you can see the curve is flat in the low register (which means it doesn’t affect this part of the spectrum
at all) and then, at a certain point, gradually starts falling. When applied to the wave above, this filter cuts
away some of the high frequency material in the wave, like this:
at all) and then, at a certain point, gradually starts falling. When applied to the wave above, this filter cuts
away some of the high frequency material in the wave, like this:
+ =
F
F
F
F
IIIIL
L
L
LT
T
T
TE
E
E
ER
R
R
R
T
T
T
TY
Y
Y
YP
P
P
PE
E
E
ES
S
S
S
There are many types of filters, all with their different purposes. We will here discuss the three most com-
mon, the ones found in the Nord Lead 2X.
mon, the ones found in the Nord Lead 2X.
L
L
L
L
O
O
O
OW
W
W
WP
P
P
PA
A
A
AS
S
S
SS
S
S
S
F
F
F
FIIIIL
L
L
LT
T
T
TE
E
E
ER
R
R
R
The Lowpass filter dampens high frequencies and let’s low frequencies pass through unaffected, as in the
example above. It is the most common synthesizer filter, since it can be used to “round off” the sharp
sound of sawtooth waves and pulse waves.
example above. It is the most common synthesizer filter, since it can be used to “round off” the sharp
sound of sawtooth waves and pulse waves.
H
H
H
H
IIIIG
G
G
GH
H
H
HP
P
P
PA
A
A
AS
S
S
SS
S
S
S
F
F
F
FIIIIL
L
L
LT
T
T
TE
E
E
ER
R
R
R
This is the opposite of the lowpass filter. It let’s the high frequencies of the sound pass through and cuts
off the low frequencies. This removes “bass” from a sound, without affecting the high end.
off the low frequencies. This removes “bass” from a sound, without affecting the high end.