User Manual

Table Of Contents
SUBTRACTOR SYNTHESIZER
(RECORD+REASON)
539
The Filter Section
In subtractive synthesis, a filter is the most important tool for shaping the overall timbre of the sound. The filter sec-
tion in Subtractor contains two filters, the first being a multimode filter with five filter types, and the second being a
low-pass filter. The combination of a multimode filter and a lowpass filter can be used to create very complex filter ef-
fects.
Filter 1 Type
With this multi-selector you can set Filter 1 to operate as one of five different types of filter. The five types are illus-
trated and explained on the following pages:
24 dB Lowpass (LP 24)
Lowpass filters lets low frequencies pass and cuts out the high frequencies. This filter type has a fairly steep roll-
off curve (24dB/Octave). Many classic synthesizers (Minimoog/Prophet 5 etc.) use this filter type.
The darker curve illustrates the roll-off curve of the 24dB Lowpass Filter. The lighter curve in the middle represents the filter
characteristic when the Resonance parameter is raised.