foxyzandClaude Opus 5.5
fce392e425
Eleven sounds for events that carry news (ready, unready, everyone ready, join, leave, kick, new video, others' chat, idle warning, connection lost/back); none for what the video already says. New voices: koto (Karplus-Strong, bendable), furin chime, rin bowl, bamboo, hyoshigi, shoji slide, in the Yo scale on D. Played by SynthSfx at the Settings volume with per-sound switches and previews. The debug layout mock is gone. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
60 lines
2.1 KiB
Dart
60 lines
2.1 KiB
Dart
import 'dart:math' as math;
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import 'package:flutter_test/flutter_test.dart';
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import 'package:watch_together/src/sfx/sfx.dart';
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import 'package:watch_together/src/sfx/sound_bank.dart';
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import 'package:watch_together/src/sfx/synth.dart';
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double _pitch(List<double> x, int from) {
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final c = <double>[];
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for (var l = 0; l < 700; l++) {
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var s = 0.0;
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for (var i = from; i < from + 2048; i++) {
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s += x[i] * x[i + l];
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}
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c.add(s);
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}
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var best = 0.0, lag = 0.0;
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for (var l = 30; l < 699; l++) {
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if (c[l] > best && c[l] >= c[l - 1] && c[l] >= c[l + 1]) {
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best = c[l];
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lag = l + (c[l - 1] - c[l + 1]) / (2 * (c[l - 1] - 2 * c[l] + c[l + 1]));
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}
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}
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return sampleRate / lag;
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}
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void main() {
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test('every sound is described, quiet, short and clean', () {
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for (final k in SfxKind.values) {
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expect(soundInfo[k], isNotNull, reason: k.name);
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final r = render(soundFor(k));
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final peak = r.fold<double>(0, (m, v) => math.max(m, v.abs()));
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expect(20 * math.log(peak) / math.ln10, lessThanOrEqualTo(-16.9), reason: '${k.name} peak');
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expect(r.length / sampleRate, lessThan(3), reason: '${k.name} length');
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expect(r.every((v) => v.isFinite), isTrue, reason: k.name);
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expect(r.first.abs() + r.last.abs(), lessThan(1e-3), reason: '${k.name} clicks');
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}
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});
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test('the ready ladder climbs and stays in range', () {
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expect(render(readySound(0)), render(readySound(1)));
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expect(render(readySound(99)), render(readySound(6)));
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});
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test('koto strings are in tune', () {
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for (final hz in [293.66, 587.33, 880.0, 1174.66]) {
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final r = render(SoundSpec([Note(0, hz, 1.0)], room: 0, cutoff: 20000));
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final cents = 1200 * math.log(_pitch(r, 2000) / hz) / math.ln2;
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expect(cents.abs(), lessThan(5), reason: '$hz');
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}
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});
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test('wav header and length', () {
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final b = wav(render(soundFor(SfxKind.chat)));
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expect(String.fromCharCodes(b.sublist(0, 4)), 'RIFF');
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expect(String.fromCharCodes(b.sublist(8, 12)), 'WAVE');
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expect(b.length, 44 + render(soundFor(SfxKind.chat)).length * 2);
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});
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}
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