Reason Devices

Subtractor

Oscillators

Select Waveform

The Subtractor has two oscillators that can be usedas sound sources for your patches

Tuning

Mix: Left = Osc 1Right = Osc 2

Activate Osc 2

Follow keyboard pitchWhen off, all keys play the same pitch

Frequency Modulation

Ring Modulation

Oscillators

Each oscillator has two phase modes Multiply and subtract

Phase amount

Two waves played out of phaseresults in a very different wave

Noise

The noise generator can be used in place of Osc 2.

Decay works before the amp EG

Pink noise (0) accentuates low frequenciesWhite noise (0) includes all frequencies at equal amplitude

Use noise for percussion and other non-pitched soundsOr to add a noise component to a pitched sound.

FiltersSubtractor has two resonant filters. Filter 1 is a multi-state filter. Filter 2 is a Low Pass Filter.

Low Pass 4 poleLow Pass 2 poleHigh Pass 2 poleBand Pass 2 poleBand Reject (notch)

Filters can be linked orindependent. When linkedLPFs act as a 6 pole filter

Cutoff Frequency

Resonance accentuatesthe cutoff frequency

For Notch and Band passFilters, resonance controlfunctions as Cutoff freq 2.

Envelope Generators

EGs are used to change a signal over time.

ADSRAttack Time - How long it takes to reach full volumeDecay Time - Time it takes to move from full volume to the Sustain LevelSustain Level - Sustained level, continues until key is releasedRelease Time - Time it takes to go from Sustain level to silence after key is released.

Amp and Filter EGs are hardwired. Mod EG can modulate different devices.

Amount of modulation can be attenuated on Filter and Mod EGs

Invert EG signal

LFOsUnlike EGs, LFOs loop continuously

Sync to tempoFrequency

Mod Amt

Mod TargetWaveforms

Last two “waveforms”are random and functionas Sample-Hold.

Keyboard pitch can modulatethe LFO frequency

LFO signal can be delayed

Frequency and Ring Mod

Frequency modulation and Ring Modulation use an audible range oscillator to modulate the frequency of another.

More Modulation

Key velocity is used to modulatethese parameters.

Pitch Bend can be set to 1-12 half steps

Wheels can be played manually, automated or by CV

Mod wheel canbe assigned to various parameters

Aftertouch andMIDI CC 11 (Expression) and CC 2 (Breath) can also be used as a mod source

Resources• Sound design with Subtractor Tutorials• Subtractor waveforms