Width = 2 Octaves; Center Frequency; From C 4 To C 10 - Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910251 CHAP 14 Function Manual

DSP Functions
Filters
Two-pole Bandpass Filter, Fixed Width (BAND2)
The only functional difference between BAND2 and BANDPASS FILTER is that the width of
BAND2 is fixed at 2.2 octaves. This gives you a one-stage bandpass filter function.
Double Notch Filter with Separation (DOUBLE NOTCH W/ SEP)
14-20
10 100
0
C 4
-10
-20
-30
-40
-50
-60
-70
10 100
0
-10
-20
-30
-40
Center frequency = C 7;
-50

width = 2 octaves

separation at -2, 0 +2
-60
Frequency in Hertz
1000 10000

Center frequency

from C 4 to C 10

Frequency in Hertz
1000 10000
-2
0
100000
C 10
100000
+2