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Effetti sonori sci-fi: sweep, modulazione, beacon e arpeggi via aevalsrc

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dev
2026-08-10 13:33:23 +02:00
parent 25395f4713
commit 9878689cfa
1 changed files with 31 additions and 18 deletions
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extensions/index.ts
+26 -13
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@@ -422,39 +422,52 @@ function cancelRecording(): Promise<void> {
}
// ---------------------------------------------------------------------------
// Feedback sonori (bip) per le interazioni con la registrazione
// Feedback sonori sci-fi (sintesi procedurale ffmpeg)
// ---------------------------------------------------------------------------
type SoundType = "start" | "stop" | "cancel" | "timeout" | "done";
const SOUNDS: Record<SoundType, { freq: number; dur: number; repeat?: number }> = {
start: { freq: 880, dur: 0.15 }, // bip acuto breve (inizio)
stop: { freq: 660, dur: 0.25 }, // conferma
cancel: { freq: 220, dur: 0.3 }, // tono basso (annullamento)
timeout: { freq: 440, dur: 0.4, repeat: 2 }, // doppio bip di avviso
done: { freq: 990, dur: 0.2 }, // completamento (successo)
// Espressioni aevalsrc per effetti fantascientifici
const SOUNDS: Record<SoundType, { expr: string; dur: string }> = {
// Power up: sweep ascendente 440→1760Hz
start: { expr: "sin(2*PI*(440+1320*t/0.15)*t)*(1-t/0.15)", dur: "0.15" },
// Deactivate: sweep discendente 1200→300Hz
stop: { expr: "sin(2*PI*(1200-900*t/0.18)*t)*(1-t/0.18)", dur: "0.18" },
// Error/Abort: modulato discendente a bassa freq
cancel: { expr: "sin(2*PI*(350-200*t/0.35)*t)*exp(-2*t)*(1+0.3*sin(2*PI*8*t))", dur: "0.35" },
// Warning beacon: pulsazione bi-tono (radar)
timeout: { expr: "if(lt(mod(t,0.5),0.15),sin(2*PI*700*t),if(lt(mod(t,0.5),0.35),0,sin(2*PI*500*t)))*0.8", dur: "1.2" },
// Success chime: arpeggio Do-Mi-Sol acuto
done: { expr: "if(lt(t,0.08),sin(2*PI*523*t),if(lt(t,0.16),sin(2*PI*659*t),sin(2*PI*784*t)))*(1-0.3*t)", dur: "0.28" },
};
function playSound(type: SoundType) {
const cfg = SOUNDS[type];
if (!cfg) return;
const wav = path.join(os.tmpdir(), `agy-sound-${type}-${Date.now()}.wav`);
const { freq, dur, repeat = 1 } = cfg;
// genera il tono con ffmpeg (silenzioso) e riproduce con paplay/aplay/ffplay
// genera il tono sci-fi con ffmpeg (silenzioso) e riproduce con paplay/aplay/ffplay
try {
execFileAsync(
"ffmpeg",
["-hide_banner", "-loglevel", "error", "-y", "-f", "lavfi", "-i", `sine=frequency=${freq}:duration=${dur}`, wav],
[
"-hide_banner",
"-loglevel",
"error",
"-y",
"-f",
"lavfi",
"-i",
`aevalsrc='${cfg.expr}':d=${cfg.dur}:s=44100`,
wav,
],
{ timeout: 10_000 },
)
.then(() => {
for (let i = 0; i < repeat; i++) {
execFileAsync("paplay", [wav], { timeout: 5000 }).catch(() => {
// fallback su aplay/ffplay se paplay non disponibile
execFileAsync("aplay", ["-q", wav], { timeout: 5000 }).catch(() => {
execFileAsync("ffplay", ["-nodisp", "-autoexit", wav], { timeout: 5000 }).catch(() => {});
});
});
}
// pulizia
setTimeout(() => {
try {
@@ -462,7 +475,7 @@ function playSound(type: SoundType) {
} catch {
/* ignora */
}
}, repeat * 1500);
}, 3000);
})
.catch(() => {});
} catch {