Ambient: Zugfahrt – zweiter Klack jedes Paares 2 Halbtöne höher; sw v82
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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2 changed files with 6 additions and 6 deletions
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@ -928,18 +928,18 @@ function buildWomb(K) {
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// Zugfahrt: Rollgeräusch + Schienenstöße. Jeder Stoß wird von zwei Achsen kurz nacheinander angeschlagen
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// (Achsabstand 3,1 m, Schienenlänge 33 m) -> "klack-klack ......... klack-klack", Pause ≈ 11× Paarabstand, Takt folgt der Geschwindigkeit.
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function railClack(K, t, amp) {
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function railClack(K, t, amp, pitch = 1) {
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const ctx = S.ctx, nb = noiseBuf("white");
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const s1 = ctx.createBufferSource(), bp = bq("bandpass", R(300, 650) * (.7 + .8 * K.b), .8), g1 = ctx.createGain(); // dumpfer Anschlag
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const s1 = ctx.createBufferSource(), bp = bq("bandpass", R(300, 650) * (.7 + .8 * K.b) * pitch, .8), g1 = ctx.createGain(); // dumpfer Anschlag
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s1.buffer = nb; s1.connect(bp).connect(g1).connect(K.out);
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g1.gain.setValueAtTime(0, t); g1.gain.linearRampToValueAtTime(amp * .55, t + .004); g1.gain.exponentialRampToValueAtTime(.001, t + .08);
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s1.start(t, R(0, 8), .1);
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const o = ctx.createOscillator(), og = ctx.createGain(); // Schlag im Wagenboden
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o.frequency.setValueAtTime(95, t); o.frequency.exponentialRampToValueAtTime(48, t + .12);
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o.frequency.setValueAtTime(95 * pitch, t); o.frequency.exponentialRampToValueAtTime(48 * pitch, t + .12);
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og.gain.setValueAtTime(0, t); og.gain.linearRampToValueAtTime(amp * .8, t + .005); og.gain.exponentialRampToValueAtTime(.001, t + .24);
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o.connect(og).connect(K.out); o.start(t); o.stop(t + .3);
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// Karosserie klingt nach: zwei Resonanzmoden, lang abklingend
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const f1 = R(170, 220);
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const f1 = R(170, 220) * pitch;
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[[f1, 1.5, .65], [f1 * 1.9, .7, .45]].forEach(([f, a, dec]) => {
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const s2 = ctx.createBufferSource(), rb = bq("bandpass", f, 10), g2 = ctx.createGain();
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s2.buffer = nb; s2.connect(rb).connect(g2).connect(K.out);
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@ -964,7 +964,7 @@ function buildTrain(K) {
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const now = T();
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while (K.nextJoint < now + 2.5) { // alle Achsen der Schienenstöße der nächsten Sekunden vorplanen (ein stockender Hauptthread reißt so keine Lücke)
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const v = K.v, t0 = K.nextJoint, amp = .8 * (.85 + Math.random() * .3);
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[0, 3.1 / v].forEach((o, i) => railClack(K, t0 + o, amp * (i ? .9 : 1))); // zwei Achsen des Drehgestells, dann Pause bis zum nächsten Stoß
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[0, 3.1 / v].forEach((o, i) => railClack(K, t0 + o, amp * (i ? .9 : 1), i ? 1.12 : 1)); // zwei Achsen des Drehgestells, dann Pause bis zum nächsten Stoß
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K.nextJoint += 33 / v;
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}
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if (now > K.nextPoints) { // Weiche: kurzes schnelles Klapperbündel
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@ -2,7 +2,7 @@
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* diora service worker — caches the app shell for offline use.
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*/
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const CACHE = 'diora-v81';
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const CACHE = 'diora-v82';
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const SHELL = [
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'/static/css/app.css',
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'/static/js/app.js',
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