feat: migrate SpessaSynth → FluidSynth WASM (SF3 native, loop Gen 54 fix)

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Replace SpessaSynth JS/AudioWorklet with FluidSynth C++ WASM
(@enikey87/fluidsynth-emscripten@0.1.1). CDN for dev, self-host
for prod. Fixes stuck Tremolo/Saxophone notes via compliant
Gen 44 loop mode processing. 100% audio parity with server
pyfluidsynth render (same C++ core).

- soundfontPlayer.js: FluidSynth WASM engine, preserve SonicSF API
- fluidsynthLoader.js: auto-select CDN (dev) vs self-host (prod)
- fluidsynth-bridge.js: PCM bridge AudioWorklet processor
- index.html: remove SpessaSynth importmap + module, add loader
- vendor/: libfluidsynth-2.3.0-sf3.js + .wasm (1.8MB self-host)

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This commit is contained in:

3dtours

2026-07-27 12:48:30 +07:00

parent 81dc9a0354

commit ef1238b87d

7 changed files with 341 additions and 181 deletions

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app/static/js/vendor/libfluidsynth-2.3.0-sf3.js

Vendored

+16

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