From 9878689cfac2909b6d0080b09237f182eac520d2 Mon Sep 17 00:00:00 2001
From: dev <dev@local>
Date: Mon, 10 Aug 2026 13:33:23 +0200
Subject: [PATCH] Effetti sonori sci-fi: sweep, modulazione, beacon e arpeggi
 via aevalsrc

---
 extensions/index.ts | 49 ++++++++++++++++++++++++++++-----------------
 1 file changed, 31 insertions(+), 18 deletions(-)

diff --git a/extensions/index.ts b/extensions/index.ts
index d2661ba..bac5319 100644
--- a/extensions/index.ts
+++ b/extensions/index.ts
@@ -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(() => {});
-						});
+				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 {