KLING & FREITAG K&F CD 44 Digital System controller - Manual (Page 20)

User's manual K&F CD 44 Digital System Controller
KLING & FREITAG GMBH © 2014 Version 11.6 Page 20 of 77
Butterworth
4th ord. 24
dB/
oct. 2 1.307 0.541 - -
Linkwitz-
Riley
4th ord 24
dB/
oct. 2 0.707 0.707 - -
Butterworth
5th ord. 30
dB/
oct. 3 1.618 0.618 0 -
Butterworth
6th ord. 36
dB/
oct. 3 1.932 0.707 0.518 -
Linkwitz-
Riley
6th ord. 36
dB/
oct. 3 1 1 0.5 -
Butterworth
7th ord. 42
dB/
oct. 4 2.247 0.802 0.555 0
Butterworth
8th ord. 48
dB/
oct. 4 2.563 0.9 0.601 0.51
Linkwitz-
Riley
8th ord. 48
dB/
oct. 4 1.307 1.307 0.541 0.541
5. LowP = Low Pass Filter
20 50 100 500 1000 5000 10000 20000
-40
-36
-24
-12
-6
-3
0
2
Frequency in [Hz]
P
o
w
e
r
in
[
d
B
]
FilterType = 'LowP' (Lowpass) Freq = 1000Hz
Q = 0.707 Butterworth 1.Ordnung
Q = 0.2
Q = 0.5
Linkwitz-Riley 2.Ordnung
Q = 0.707 (default) Butterworth 2.Ordnung
This example shows various low pass filters at 1000Hz, which are characterised by
different Q-factors.