mirror of
https://github.com/9x/sheetmusictrainer.git
synced 2026-11-03 22:03:54 +01:00
Jens Mohrmann
079d574b66
- Pick detector per instrument range: ACF2PLUS (robust down to ~40 Hz) for normal instruments, YIN only for the whistle register. pitchfinder's YIN latches onto tau=2 (~20 kHz garbage) below ~100 Hz and for quiet input; the old fixed 4096 window masked this, the smaller window exposed it. - RMS-normalize analysis input for the YIN path only; ACF2PLUS keeps the raw signal so its internal unpitched gate rejects quiet decayed audio instead of amplifying noise into confident wrong pitches (tuner stuck on 'a note'). - Adaptive analysis window sized to the instrument's lowest note (~2 periods): half the latency, a quarter of the CPU for guitar/piano/voice; bass keeps the full window for E1. - Reject detections implausibly below the instrument floor (mains hum). - Clear stale pitch readings after 200 ms instead of keeping them forever. - Shared AudioEngine singleton for all playback (was: two AudioContexts); tracks audibility so the app stops hearing its own speaker (ear-training self-scoring) and gates matching plus display during playback. - MatchTracker: grace-period based note hold instead of reset-on-every-flicker (YIN flickers during attacks/decays; the old hard reset made the 50 ms threshold fire unreliably). - Display damping in the producer (EMA for cents/level, 3-frame note-name hysteresis); display components render directly without CSS transitions. - Regression tests: synthetic signals through the exact pipeline helpers (MatchTracker + pitchDetection test suites).
20 lines
667 B
TypeScript
20 lines
667 B
TypeScript
import { useCallback } from 'react';
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import { audioEngine } from '../audio/AudioEngine';
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interface AudioPlayerHandle {
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playNote: (midi: number, duration?: number, volume?: number) => void;
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}
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/**
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* Thin hook wrapper around the shared AudioEngine singleton.
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* All playback goes through one AudioContext and is tracked there, so pitch
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* detection can gate itself while the app's own speaker output is audible.
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*/
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export function useAudioPlayer(): AudioPlayerHandle {
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const playNote = useCallback((midi: number, duration: number = 0.5, volume: number = 0.3) => {
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audioEngine.playNote(midi, duration, volume);
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}, []);
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return { playNote };
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}
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