tools

Drone Machine

Pure tone drone with just intonation tuning, variable beating, and harmonic partial toggles. Choose a root from C through B, select an octave, dial in a beat rate. Add upper partials (2nd through 16th) to build a harmonic field. Useful for ear training, tuning, and meditative listening.

Real-Time Spectrum Analyzer

Microphone input, FFT analysis on a log-frequency scale with overlaid just intonation partial markers. Choose a root pitch; markers show where partials 1–16 fall relative to your signal. Useful for microtonal ear training, tuning investigations, and understanding what your instrument is actually doing. Listens only — no audio output.

Harmonic Series Explorer

Sixteen partials of a fundamental, all tunable and listenable. Toggle individual partials on and off, adjust levels, and hear how the timbre changes as you build or strip the harmonic structure. The math that underlies both timbre and just intonation, made audible.

Subharmonic Series

The mirror image of the harmonic series — where overtones produce major-flavored sonorities, undertones produce minor. Explore the subharmonic stack and hear why the minor triad has historically puzzled theorists seeking a "natural" basis in acoustics.

Sound Field

An interactive sound environment — move through it. Position and motion map to timbre, pitch, and space. A generative piece as much as a tool.

Partch Combinatorial Sets

Harry Partch's hexany, dekany, and eikosany — sets of pitches generated from products of prime numbers. Click to build chords inside these structures. One of the most sophisticated approaches to microtonal harmony, made explorable.

Phase Machine

Two voices, one pattern. Voice B drifts at a slightly different tempo — new rhythms and melodies emerge from the collision. A minimal compositional engine inspired by Steve Reich's phasing works.

Euclidean Rhythm Generator

Four layered rhythmic rings. E(n,k) distributes n pulses across k steps as evenly as possible — the same algorithm as computing the GCD. Generates tresillo, cinquillo, aksak, and samba automatically. A mathematical view of global rhythmic traditions.

Interval Figures

Every musical interval has a shape. Lissajous figures trace the relationship between two frequencies — an octave makes a diagonal, a fifth makes an ellipse, a minor second makes controlled chaos. Tune the ratio and watch the figure resolve or dissolve.