Kurzweil K2661 Musician's Manual page 508

DSP Functions
The DSP Functions
4-Pole Lowpass Filter:
Resonance
4-Pole Lowpass Filter:
Separation in Octaves
This combines 2POLE LOWPASS and LOPAS2 in one three-stage function. The parameters on
the F1 FRQ control-input page affect the cutoff frequencies of both filters. The parameters on the
F2 RES page affect the resonance of 2POLE LOWPASS. The parameters on the F3 SEP page shift
the cutoff frequency of LOPAS2, creating a separation between the cutoff frequencies of the two
16-12
10 100
20
10
0
-10
-20
-30
-40
-50
-60
Cutoff frequency = C 5;
separation = 0;
-70
resonance from -12 to 24 dB
-80
10 100
20
10
0
-10
-20
-30
-40
-50
-60
Cutoff frequency = C 7;
-70
resonance = 12 dB;
separation from -2 to +2
-80
Frequency in Hertz
1000 10000
24
-12
Frequency in Hertz
1000 10000
-2
100000
100000
+2