Browser experiments in just-intonation tuning and source-filter voice synthesis, built around the barbershop style. All Web Audio, no dependencies — click in to make sound.
Four just-intonated source-filter voices. Pick a key, chord root, and barbershop chord; reorder the voicing; shape each voice's vowel on a shared chart.
A single voice: a glottal buzz shaped by five formant resonances, with a draggable IPA vowel chart, vibrato, and an XY pad for source falloff × bandwidth.
A polyphonic just-intonation keyboard for spelling barbershop chords, with Helmholtz–Ellis / frequency-ratio labels.