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docs: Update README with audio engine, MIDI probe, pitch bend learn

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- Built-in Audio Engine section for DJ-S11 sample
- 2 royalty-free procedural tracks (House 128 / Breakbeat 140)
- Full feature list: EQ, faders, crossfader, pitch, VU, jog, FX
- MIDI probe and pitch-bend learn mentions
- Removed 'no audio output' line (now HAS audio)
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Turtle Dove 2026-07-17 14:17:17 -05:00
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README.md
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@ -38,9 +38,23 @@ Five ready-made layouts via the **Samples** menu: Audio Mixer, Settings Panel, M
### Perform Mode & Web MIDI
- **Perform Mode** (`P` key or ▶ Perform): all placed widgets become live controls — draggable sliders, toggleable buttons, rotatable jog wheels, animated VU meters
- **Web MIDI** (Chrome/Edge/Opera): connect any MIDI controller, **MIDI Learn** (`L` key) to map hardware CC/notes to on-screen widgets, MIDI OUT feedback for LED rings and motor faders
- **Numark Mixstream Pro preset** included as a starter mapping
- Works fully without audio output — visual control surface demo
- **Web MIDI** (Chrome/Edge/Opera): connect any MIDI controller, **MIDI Learn** (`L` key) to map hardware CC/notes/pitch-bend to on-screen widgets, MIDI OUT feedback for LED rings and motor faders
- **Probe MIDI**: hardware diagnostics with input/output enumeration + live message monitor
- **Numark Mixstream Pro preset** included as a starter mapping (requires Computer/MIDI mode on the unit)
### Built-in Audio Engine (DJ-S11)
The DJ-S11 sample includes a **fully functional audio engine** via Web Audio API:
- **2 royalty-free procedural tracks**, synthesized in-browser (no samples, no licensing, works offline): House 128 BPM on Deck A, Breakbeat 140 BPM on Deck B
- **PLAY / CUE / SYNC** — working sequencer per deck with beatmatching
- **3-band EQ** (HI/MID/LOW) per channel via BiquadFilters
- **Channel faders + equal-power crossfader**
- **Pitch control** ±8% per deck
- **Master volume + real RMS VU meters** (AnalyserNode)
- **Jog wheels** nudge playback phase
- **FX**: ECHO on master (delay + feedback)
- Live playhead progress bars and time counters on each deck
## Upstream Contributions