Reason's "Subtractor" Synth
(kind of) Emulation of the "Subtractor" from Propellerheads Reason
DESCRIPTION
This is an emulation of Propellerheads "Subtractor", a polyphonic synthesizer based on subtractive and phase offset synthesis.
In fact this is no real emulation, because I only rebuilt the structure without any emulation of the specific sound. So it does only look and feel but not sound like Subtractor.
OSCILLATOR SECTION:
The oscillator section consists of
all in all 5 oscillators.
Each of the two main oscillators (Osc1 & 2) consist of one normal waveform and a copy of this, that can be phase-offset to the first one (for phase modes = "x" & "-"). Then, the two signals are subracted (for Phase Mode = "-") or multiplied (for Phase Mode = "x"). Setting Phase Mode to "o" turns the second oscillator off and just puts out the normal waveform.
The noise oscillator is mixed to Osc2, Osc1 can be mixed with Osc2 (now having the noise in it) using the Mix control.
FILTER SECTIONS:
After that, there are 2 Filters that can be linked. Filter 1 is multimode and has an own envelope, Filter 2 is a lowpass filter.
VOLUME SECTIONS:
All volumes are controlled by the volume envelope.
The master Level is the last control before the signal leaves the synth.
MODULATION SECTIONS:
Some parameters can be modulated by different sources:
- monophonic LFO (LFO1)
- polyphonic LFO (LFO2)
- extra envelope (Mod. Envelope)
- Velocity
- Modwheel
- Midi (Ext. Mod)
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CHANGES (in compare to the original Subtractor):
Improvements:
+ All oscillators can now work synced to gate now (using teh "Osc Sync"-button), so that same snapshots wont sound different,
when re-loading after changes (I experienced this issue using the original "Subtractor").
+ There now is a clip indicator above the master level control.
Restrictions:
- Legato mode only works in "Mono"-Mode.
- Polyphony settings can not be saved with snapshots (use "Mono"- or "Poly"-Mode to save at least this information inside snapshots).
- "low BW" option is not available. To save CPU costs, lower your sample rate and/or control rate
- only the four most important waveforms are available
- bad FM and ring mod sound
- there is no analog sound emulation at all, everything is fully digital
- current knob and fader values are only displayed in the "Current Value" box, not as a cursor tooltip/hint
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For more information & help look at the control-descriptions (hints) or contact me:
Simon.Klapper@gmx.de
Please also report bugs
or improvements you find out, i.e. according to the restrictions, so I can upload an improved version, or upload one yourself, but inform me about that. Thanks! :-)
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