NOXIOUS Additive Wave Synthesizer

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Noxious is a polyphonic additive synthesizer. Additive synthesis consists of adding tens, hundreds or thousands of individual sinusoidal oscillators to create complex waveforms or sounds. In theory, additive synthesis is able to recreate any sound imaginable but is usually a challenge to manipulate.

Noxious takes an intermediate route to additive synthesis by offering a limited mean of manipulating these sinusoidal oscillators, called partials, through “modifiers” and classical filters.

Noxious front panel



Instead of creating partials from scratch, Noxious will allow you to start with a basic wave form from a predetermined list. These wave forms are not purely periodic, which is what you find in most synthesizers. Noxious can produce inharmonic wave forms. Being an additive synthesizer Noxious can generate up to 200 partials or sine oscillators per wave form.


Noxious modifiers and filters
Noxious modifiers and filters

These partials produced by the additive engine can then be transformed by a stack of up to five modifiers. The modifiers are applied in sequence and can modify the levels of the partials, their pitch or both. Each modifier can operate on a subset of partials. Modifiers range from equalizers, to tuners or even pure random noise.


After the partial modifiers, the wave form can be modified furthermore with two multi-state filters in series featuring resonance. This is classical territory if you know subtractive synthesis but the filters operate directly on the partials without touching the phase. Your typical low pass, high pass and band pass filters come in four flavors : 6, 12, 24 and 48 dB/octave slopes.


And because static sounds are so boring, all the above filters and modifiers can be furthermore modulated with two LFOs, two modulation envelopes, amplitude envelope and performance controllers such as velocity, aftertouch or modulation wheel. A modulation matrix lets you build your own modulation routes with adjustable modulation strength.

And if that isn’t enough, control voltage signals can be used to modulate sections of Noxious from external devices thanks to Reason’s powerful cable system.

Noxious back panel
Noxious back panel



Noxious is available exclusively for Propellerhead Reason 6.5 / 7.0 and Reason Essential 1.5 / 7.0 on all supported hardware platforms. It is purchasable and downloadable through the Propellerhead Shop or through the links on the top right side of this page.