CORSYNTH
C101 - OTA LOWPASS FILTER MKII
3
HTTP://WWW.CORSYNTH.COM
0
1
2
3
4
5
6
7
8
9
10
FREQUENCY
0
1
2
3
4
5
6
7
8
9
10
RESONANCE
1V / OCT
-5
-4
-3
-2
-1
0
+1
+2
+3
+4
+5
LEVEL
RES MOD
CONTROL DESCRIPTION
FREQUENCY
This control sets the cutoff frequency of the filter. The frequencies
above cutoff frequency are attenuated at a rate of 24dB / 6db per
octave.When the control is set to 10 position the filter is totally
open so it doesn’t have effect over the audio frequency.
RESONANCE
This control sets the resonance level. Above 9 position the filter
will self-oscillate with a frequency defined by the frequency con-
trol. The generated waveform is a very pure sine wave that can be
used as sound source.
1V / OCT
Exponential control voltage for cutoff frequency. When the filter is
set to auto-oscillation this input allow the filter to be used as a
VCO. The tracking will be perfect in more or less 5 octaves.
RES MOD
Resonance modulation input. The
LEVEL
potentiometer set the
amount of modulation ( normal or inverted ). The input allow posi-
tive and negative signals which together with the value set by the
RESONANCE
control give the final value of the resonance.
