ZS TET BOARD
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Microtonal Oscillator-Board Synth
TET Board BasicLayman ExplanationTET Board Basic is a microtonal 270-oscillator synthesizer built for alternate tuning, huge stacked tones, heterodyne frequency motion, multi-tap thickness, and extreme octave travel. The simple way to explain it is: TET Board Basic turns a MIDI keyboard into a microtonal oscillator board.
MIDI keyboard → TET tuning grid → 270 oscillators per voice → multi-tap layering → heterodyne fold motion → voice FM
Main IdentityTET Board Basic is a tuning-board synth. A normal synth says: play a note, hear an oscillator. TET Board Basic says: choose the tuning system, choose the base frequency, shift the octave field, spread 270 oscillators across center, left, and right space, add multi-tap layering, scan heterodyne frequency zones, and let the voices cross-modulate each other. It is not just a simple microtonal keyboard. It is a microtonal oscillator-field instrument. 270 Oscillators Per VoiceEach voice contains 270 oscillators: 90 center oscillators, 90 left-field oscillators, and 90 right-field oscillators. So one played note is not just one oscillator. It becomes a large stacked oscillator body with a center core and stereo side fields.
90 center oscillators
90 left-field oscillators 90 right-field oscillators 4-Voice PolyphonyThe synth has 4 voices, and each voice contains the 270-oscillator structure. Four-voice polyphony lets users play dense microtonal chords, wide detuned clusters, and evolving harmonic stacks while each voice carries its own 270-oscillator body. TET DivisionsTET means equal divisions of the octave. Standard Western tuning is 12-TET, meaning the octave is divided into 12 equal notes. TET Board Basic lets the user choose from 2 TET up to 144 TET.
2-TET through 144-TET
Standard 12-note tuning Microtonal pitches between piano keys Alien chords and alternate tuning grids Base FrequencyBase Frequency sets the tuning anchor of the instrument. The range is 200 Hz to 800 Hz, with the default centered around 440 Hz. Base Frequency lets users retune the entire board around a custom pitch center, making the synth useful for alternate tuning, microtonal music, and experimental pitch design. Main Control / Oscillator Delay StepThe knob labeled Main controls the oscillator delay-step behavior. This affects how the oscillator stack is spread in time. Tiny time differences across many oscillators can change the thickness, width, smear, movement, and phase feel of the note. Tap Spacing and TapsTET Board Basic includes a multi-tap layer. Tap Spacing controls the time spacing between taps. Taps controls how many tap layers are active, up to 30 taps in the interface. Tap Spacing and Taps add layered delay-body behavior inside the synth, creating thicker tones, wider motion, and more dimensional microtonal textures. Octave ShiftOct Shift moves the whole pitch field up or down. This version has an enormous range: -392 semitones to +392 semitones. Extreme Oct Shift lets users push the TET board into deep low zones, bright upper zones, and impossible experimental pitch ranges. Output GainGain controls the final output level. Because this synth can stack 270 oscillators per voice plus multi-tap layers, output control matters. Heterodyne Frequency ModesThe interface includes heterodyne mode buttons for Normal, KHz, MHz, GHz, THz, and PHz. These modes are creative frequency-zone modes that let the synth use large conceptual frequency regions as part of the sound-design behavior.
Normal
KHz MHz GHz THz PHz Frequency Scan KnobsEach heterodyne zone has its own scan control: KHz Scan, MHz Scan, GHz Scan, THz Scan, and PHz Scan. Frequency Scan controls let users tune the heterodyne field directly, shaping how each extreme frequency zone influences the audible oscillator board. Fold / Fold + BeatThe heterodyne section includes fold behavior with modes like Fold Only and Fold + Beat. Fold pulls the frequency behavior back into a usable sound range. Fold + Beat adds beating motion, giving the tone more movement and internal pulse. Voice FM CrossmodulationThis version includes Voice FM crossmodulation. The four synth voices can influence each other with FM-style motion. The voices can push and bend each other instead of staying completely separate. FM DepthFM Depth controls how strongly the voices influence each other. Low depth gives subtle motion. Higher depth creates stronger movement, tension, and experimental harmonic behavior. On-Screen KeyboardThe plugin includes an on-screen MIDI keyboard, making it easy to audition the TET tuning directly inside the plugin without needing an external controller. Why It Is Different From A Normal SynthA normal synth usually gives a few oscillators and standard tuning. TET Board Basic gives microtonal tuning plus a huge oscillator field.
2–144 TET divisions
200–800 Hz base frequency 270 oscillators per voice 4-voice polyphony 90 center / 90 left / 90 right oscillator groups Main oscillator delay-step control Multi-tap spacing Up to 30 taps Extreme -392 to +392 semitone octave shift KHz / MHz / GHz / THz / PHz heterodyne modes Fold and Fold + Beat behavior Voice FM crossmodulation On-screen keyboard Full Sales PitchTET Board Basic is a microtonal 270-oscillator synthesizer built for alternate tuning, dense stereo oscillator fields, heterodyne frequency motion, and experimental harmonic sound design. Instead of locking users into normal 12-note tuning, it lets the octave be divided anywhere from 2 to 144 TET divisions, turning the keyboard into a flexible microtonal frequency board. Every voice is built from 270 oscillators: 90 center oscillators, 90 left-field oscillators, and 90 right-field oscillators. With four voices of polyphony, the synth can create huge microtonal chords, wide pitch clusters, dense drones, alien leads, and stacked stereo oscillator textures. The Main control shapes the internal oscillator delay-step field, changing how the 270 oscillators spread inside each note. Tap Spacing and Taps add multi-tap layering for thicker internal motion, while Oct Shift can move the entire pitch field from -392 to +392 semitones for extreme low, high, and impossible pitch-zone design. The heterodyne section gives the synth its experimental edge. Normal, KHz, MHz, GHz, THz, and PHz modes let users scan conceptual frequency zones and fold them back into audible sound. Fold and Fold + Beat modes add folded frequency color and beating motion, while Voice FM crossmodulation lets the four voices influence each other for deeper harmonic animation.
270-oscillator microtonal TET synthesis with heterodyne scanning, Fold + Beat motion, multi-tap layering, and extreme octave travel.
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