1h 48m 19s logged

it makes sound now

okay so. I may have blacked out and written an entire synthesizer in one commit. 210 lines of renderer, 65 lines of streaming, a full Svelte demo app with a piano roll, and a dozen DSP fixes. this is flo-era hyperfocus energy except I can HEAR it this time. (well I could hear flo, it’s a audio format, so like, duh, but yk what i mean loll)

the renderer

renderNote() takes a Note + VoiceConfig + LanguageModule and produces actual audio. per-sample processing: vibrato with attack ramp, 30ms smoothstep formant interpolation between phonemes, glottal pulse through the cascade, shaped noise for consonants with per-segment fade in/out, smoothstep attack/release envelope, peak normalization. consonants get their default duration, vowels split the remaining time. if consonants would eat more than 40% of the note they get compressed.

every filter, oscillator, and cascade got refactored from batch to per-sample. slower but I can morph formants sample-by-sample for smooth transitions.

DSP fixes (there were several)

the LF oscillator’s open phase was inverted. added a DC blocking filter because the pulse was making everything drift. added jitter for natural-sounding pitch variation.

the resonator gain formula was wrong (b0 = 1 - r*r should be b0 = 1 - B - C). FormantCascade now runs anti-resonators before resonators (correct order for nasals). added setPassthrough() for unused filter slots.

female formant scale went from 0.88 to 1.15. I had it backwards. scaling down shrinks the tract and sounds childlike. scaling up is what you want.

streaming + demo

streamScore() is an async generator. walks the score note by note, handles tempo changes, yields chunks. player starts playing before the score finishes rendering.

the demo is a full Svelte 5 app. canvas piano roll (click to create, drag to move/resize, delete to remove), voice panel with easy sliders + expandable advanced params, transport bar, language switcher. Japanese demo says “ka na ta shi i ne”. English says “HELLO WORLD THIS IS A TEST”.

press play and it synthesizes through Web Audio in real time. from math.

everything else

Japanese plosives got formant data (were noise-only). added “l” as an r-alias for loanwords. barrel file exports the full public API. wrote a comprehensive TODO.md because the list of things that aren’t done is very long.

it sounds terrible. robotic and buzzy and the consonants are more like clicks. but it’s SOUND. generated from MATH. in a BROWSER. Peterson and Barney would be proud. (or horrified.)