Sound Synthesis & SFX

Subtractive Synth

max patch


General description

10 voice subtractive synth with 2 filters and 4 initial waveforms – 3 classical waveforms such as saw, triangle, pulse/square and one artificial “waveform” made from filtered noise with 20 resonant filters…


Saw & Triangle: Pitch deviation can be set in semitones. When LFO modulation is turned on, pitch oscillates between + and – “modulation range/depth” around the “pitch dev.” setting. Panning can be also modulated by the LFO. When panning freq. is set to more than 0, panning position oscillates between + and – “pan width” around the Pan (knob) setting.

Square or Pulse: Pulse wave has two extra modulation options – pulse width modulation and modulation of the range/depth of the pulse width modulation.

Filtered White Noise: This “waveform” is made by 20×2 (x2 for stereo) narrow bandpass filters. There is 400 filters in all 10 voices. When volume option is on the multislider (20 sliders) represents the volume control for each individual filter. When the amplitude modulation option is chosen, the multislider represents the frequency of amplitude modulation for each individual filter (0-30Hz). When harmonic mode is on, the distance (in freq.) between bandpass filters (partials) is constant. When disharmonic mode is on, the distance between formants is calculated by exponential expression. The exponent can be set at the right bottom corner.


User can choose between parallel and series circuit. When filters are modulated by envelope or LFO, “mod. range” sets the frequency interval that corresponds to the envelope or LFO values between 0 and 1. “Mod. start” sets the initial modulation value.

Example: Mod. range is set to 300 and mod. start to 200. When the envelope or LFO outputs values from 0 to 1, filter’s cutoff frequency travels between 200 to 500Hz.

When “Get duration from ADSR” is on, the time of ADSR (A+D+R) sets also the filter envelope time.

When the “inverse” is on, the envelope’s highest value becomes the lowest and vice versa.

Tap Delay

Dry/Tapped: Dry/Wet ratio can be modulated with LFO.

Delay Time: Delay Time can be modulated by LFO. When freq. and amount is set to 0, smallest delay time parameter sets the delay time.


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