02: Comb Filter - Korg Synthesizer User Manual

02: Comb Filter

In this oscillator, the signal from the other oscillator waveform or the noise generator is sent through
a comb filter, and the feedback level of the comb filter is varied in order to produce tonal change.
When noise is input, raising the feedback of the comb filter will gradually change the sound into a
pitched tone.
Comb Oscillator
Noise
OSC1/2 or
Sub OSC
Filter1 out
Filter2 out
Pulse Noise
or Impulse
Example of when noise is input
Level
Frequency
2–1a
2–1b
2–1c
2–1d
2–1a: Input
Input [OSC2(1)+Noise, SubOSC+Noise, Filter1+Noise, Filter2+Noise, Pulse Noise, Impulse]
Selects the signal that will be input to the comb filter.
Example of when an Impulse is input
Noise Level
Input Level Mod.Source/Intensity
Input Wave
Level
Level
Feedback>0
Level
Comb Filter
Feedback=0
Feedback>0
Comb Filter
Time
Feedback=0
Time
Pluse Pluse
Width=0 Width=99
Comb Filter
Delay
High Damp
Comb Filter Feedback
Frequency
As the Feedback value increases,
the sound will become more pitched.
Frequency
Time
As the Feedback is
increased, the decay
time will become longer.
Time
Prog.
Edit
P2