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User Manual

ManualsBrandsPropellerhead ManualsAudio SoftwareRecord 1.5 PC / MAC - AUDIO PRODUCTION SOFTWARE
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Table Of Contents
SUBTRACTOR SYNTHESIZER
(RECORD+REASON)
541
• Highpass (HP12)
A highpass filter is the opposite of a lowpass filter, cutting out lower frequencies and letting high frequencies pass.
The HP filter slope has a 12 dB/Octave roll-off.
The darker curve illustrates the roll-off curve of the Highpass Filter. The lighter curve in the middle represents the filter
characteristic when the Resonance parameter is raised.
•Notch
A notch filter (or band reject filter) could be described as the opposite of a bandpass filter. It cuts off frequencies
in a narrow midrange band, letting the frequencies below and above through. On its own, a notch filter doesn’t re-
ally alter the timbre in any dramatic way, simply because most frequencies are let through. However, by combining
a notch filter with a lowpass filter (using Filter 2 - see “Filter 2”), more musically useful filter characteristics can be
created. Such a filter combination can produce soft timbres that still sound “clear”. The effect is especially notice-
able with low resonance (see “Resonance”) settings.
The darker curve illustrates the roll-off curve of the Notch Filter. The lighter curve in the middle represents the filter
characteristic when the Resonance parameter is raised.