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v2: Fix playback engine with progressive scheduling and gain tuning

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- Add progressive note scheduling (2 seconds ahead) to prevent browser overwhelm
- Tune channel gains: pulse 0.12, wave 0.15, noise 0.02
- Reduce per-note noise gains for cleaner drums
- Re-enable arpeggiation for harmony tracks
- Limit to 8 channels max
- Add scheduler cleanup on stop
This commit is contained in:
b1rdmania
2026-01-26 00:10:48 +00:00
parent f095f9a2a7
commit f829e992c7
4 changed files with 99 additions and 21 deletions
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src-v2/audio/apu/APU.ts
+7 -7
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@@ -112,32 +112,32 @@ export class GameBoyAPU {
* The limiter will catch peaks, but we want to minimize its work
*/
private initializeChannels(): void {
// Create pulse channels (4 × 0.08 = 0.32 max)
// Create pulse channels (4 × 0.12 = 0.48 max)
for (const config of CHANNEL_CONFIG.pulse) {
const gain = this.createChannelGain(config.id, 0.08);
const gain = this.createChannelGain(config.id, 0.12);
const channel = new PulseChannel(this.audioContext, gain, config.hasSweep);
channel.setDutyCycle(config.defaultDuty);
this.pulseChannels.set(config.id, channel);
this.initChannelState(config.id);
}
// Create wave channels - slightly higher for bass presence (2 × 0.12 = 0.24 max)
// Create wave channels for bass (2 × 0.15 = 0.30 max)
for (const config of CHANNEL_CONFIG.wave) {
const gain = this.createChannelGain(config.id, 0.12);
const gain = this.createChannelGain(config.id, 0.15);
const channel = new WaveChannel(this.audioContext, gain, config.preset);
this.waveChannels.set(config.id, channel);
this.initChannelState(config.id);
}
// Create noise channels (2 × 0.05 = 0.10 max)
// Create noise channels - very quiet (2 × 0.02 = 0.04 max)
for (const config of CHANNEL_CONFIG.noise) {
const gain = this.createChannelGain(config.id, 0.05);
const gain = this.createChannelGain(config.id, 0.02);
const channel = new NoiseChannel(this.audioContext, gain, config.mode);
this.noiseChannels.set(config.id, channel);
this.initChannelState(config.id);
}
}
// Total max: 0.32 + 0.24 + 0.10 = 0.66 (headroom for note overlap)
// Total max: 0.48 + 0.30 + 0.08 = 0.86 (limiter handles peaks)
/**
* Create a gain node for a channel and connect to master.