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Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910251 CHAP 14 - One-pole Lowpass Filter (LOPASS)

Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910251 CHAP 14
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DSP Functions
Filters
14-7
One-pole Lowpass Filter (LOPASS)
Frequencies below the cutoff frequency are unaffected by this filter. At the cutoff frequency, the
signal is attenuated 3 dB. There’s a rolloff of 6 dB per octave above the cutoff frequency—that
is, the signal is attenuated 6 dB with each octave above the cutoff. The resonance—the amount
of cut or boost at the cutoff frequency—is fixed at -3dB. When the cutoff frequency is well
below the the lowest-frequency partials of a sound, lowering the cutoff further will not affect
the timbre of the sound, but will reduce its overall amplitude.
EditProg:F1|FRQ(LOPASS)||||<>Layer:1/1||
Coarse:
C|4|262|Hz|||Src1||:OFF||||||||||
Fine||:0ct||||||||||Depth|:0ct||||||||||
||||||||||||||||||||Src2||:OFF||||||||||
KeyTrk:0ct/key||||||DptCtl:OFF||||||||||
VelTrk:0ct||||||||||MinDpt:0ct||||||||||
Pad|||:0dB||||||||||MaxDpt:0ct||||||||||
<more||
F1|FRQ|
F2|||||
F3|||||F4|AMP|more>
PARAMETER RANGE OF VALUES
COARSE ADJUST C 0 16 Hz to G 10 25088 Hz
FINE ADJUST ± 100 cents
KEY TRACKING ± 250 cents per key
VELOCITY TRACKING ± 10800 cents
PAD 0, 6, 12, 18 dB
SOURCE 1 Control Source list
SOURCE 1 DEPTH ± 10800 cents
SOURCE 2 Control Source list
SOURCE 2 DEPTH CONTROL Control Source list
MINIMUM DEPTH, SOURCE 2 ± 10800 cents
MAXIMUM DEPTH, SOURCE 2 ± 10800 cents
-60
-50
-40
-30
-20
-10
0
10 100 1000 10000 100000
C5 C10
Frequency in Hertz
Amplitude in dB
Cutoff Frequency
from C5 to C10

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