Clavia Nord Lead 2X User Manual page 50

8. Panel Reference: Filter
velope Amount knob, can be used to make the Filter frequency vary as the sound progresses, when you
press and hold a key. For a theoretical introduction to filters, see
F F F F T T T T
I I I I L L L L T T T T E E E E R R R R Y Y Y Y P P P P E E E E
LP 12 LP 12 B B B B
LP 12 LP 12
D D D D
LP stands for low-pass. A low-pass filter lets low frequencies pass and cuts out higher frequencies. Exactly
which frequencies get cut out is determined by the Filter Frequency setting (and various other controls,
as described below).
In the 12dB low-pass mode, the filter has a gentle roll-off curve (12dB=2poles). This mode leaves more
harmonics than the 24dB variation discussed below. This type of filter has been used in various Oberheim
synthesizers and others.
LP 24 LP 24 LP 24 LP 24 B B B B
D D D D
This is the classic synth filter used in the Minimoog and Prophet-5, among others. It cuts out high fre-
quencies rather drastically (24db=4 poles).
HP 24 HP 24 B B B B
HP 24 HP 24
D D D D
HP stands for high-pass. This filter is the opposite of the lowpass filter, that is it lets the high frequencies
pass and cuts out low frequencies. The filter has a rather steep curve.
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NORD LEAD 2X V1.0x
page 85.