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feat: implemented chord detection feature for MIDI regions

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Xiaohan-Tian
2026-05-25 23:22:42 -07:00
parent 275cfece99
commit 0f1bad4394
9 changed files with 1274 additions and 74 deletions
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public/test-data/chord-progression-01.json
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{
"name": "chord-midi conversion test",
"maxBars": 32,
"currentBars": 0,
"timeSignature": {
"numerator": 4,
"denominator": 4
},
"bpm": 125,
"keySignature": "A minor",
"selectedMode": "ionian",
"isLooping": false,
"loopingRange": [
0,
0
],
"barWidthMultiplier": 2,
"pianoRollZoom": 1,
"projectStructureVersion": 15,
"tracks": [
{
"__type": "KGMidiTrack",
"name": "Melody",
"id": 1,
"trackIndex": 0,
"type": "MIDI",
"volume": 0,
"muted": false,
"solo": false,
"regions": [
{
"__type": "KGMidiRegion",
"id": "KGMidiRegion_1779769428819_b7o8981rl",
"trackId": "1",
"trackIndex": 0,
"name": "Chord Progression",
"startFromBeat": 0,
"length": 32,
"selected": false,
"notes": [
{
"id": "KGMidiNote_1779769428819_0rub4fxuu",
"startBeat": 0,
"endBeat": 4,
"pitch": 45,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_xm390pxjt",
"startBeat": 0,
"endBeat": 4,
"pitch": 57,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_lnjgm5h4y",
"startBeat": 0,
"endBeat": 4,
"pitch": 60,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_mhadr3rqs",
"startBeat": 0,
"endBeat": 4,
"pitch": 64,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_6iotgyszv",
"startBeat": 4,
"endBeat": 8,
"pitch": 41,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_t948mgv63",
"startBeat": 4,
"endBeat": 8,
"pitch": 53,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_17lfthyzq",
"startBeat": 4,
"endBeat": 8,
"pitch": 57,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_8rck5x4qu",
"startBeat": 4,
"endBeat": 8,
"pitch": 60,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_7lzkhxewk",
"startBeat": 8,
"endBeat": 12,
"pitch": 50,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_vudwound0",
"startBeat": 8,
"endBeat": 12,
"pitch": 62,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_3dlhf70kk",
"startBeat": 8,
"endBeat": 12,
"pitch": 65,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_yqcv8cfm1",
"startBeat": 8,
"endBeat": 12,
"pitch": 69,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_uyz56w2ln",
"startBeat": 12,
"endBeat": 16,
"pitch": 52,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_datxn33uz",
"startBeat": 12,
"endBeat": 16,
"pitch": 64,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_sd8mv9pr6",
"startBeat": 12,
"endBeat": 16,
"pitch": 68,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_ja7sz9w2k",
"startBeat": 12,
"endBeat": 16,
"pitch": 71,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_f68y3owck",
"startBeat": 12,
"endBeat": 16,
"pitch": 74,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_2kfouqrvw",
"startBeat": 16,
"endBeat": 20,
"pitch": 45,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_fvlkoqryj",
"startBeat": 16,
"endBeat": 20,
"pitch": 57,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_w9bz827to",
"startBeat": 16,
"endBeat": 20,
"pitch": 60,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_0tqsc6c0m",
"startBeat": 16,
"endBeat": 20,
"pitch": 64,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_ixzfcrjvc",
"startBeat": 20,
"endBeat": 24,
"pitch": 48,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_fyhjqc8iz",
"startBeat": 20,
"endBeat": 24,
"pitch": 60,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_h6o16p7os",
"startBeat": 20,
"endBeat": 24,
"pitch": 64,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_pruviieci",
"startBeat": 20,
"endBeat": 24,
"pitch": 67,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_tnskhun3e",
"startBeat": 24,
"endBeat": 28,
"pitch": 50,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_wm50u0odu",
"startBeat": 24,
"endBeat": 28,
"pitch": 62,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_6xj1yzqhb",
"startBeat": 24,
"endBeat": 28,
"pitch": 65,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_nm8rlk6bl",
"startBeat": 24,
"endBeat": 28,
"pitch": 69,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_dwu4rjqeb",
"startBeat": 28,
"endBeat": 32,
"pitch": 52,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_rq9tzzjee",
"startBeat": 28,
"endBeat": 32,
"pitch": 64,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_r678w4eew",
"startBeat": 28,
"endBeat": 32,
"pitch": 68,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_d2akv8vpt",
"startBeat": 28,
"endBeat": 32,
"pitch": 71,
"velocity": 127,
"selected": false
},
{
"id": "KGMidiNote_1779769428819_q2l671ma4",
"startBeat": 28,
"endBeat": 32,
"pitch": 74,
"velocity": 127,
"selected": false
}
],
"pitchBends": [],
"controllerEventsByType": [
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[]
]
}
],
"volumeAutomation": [],
"panAutomation": [],
"instrument": "acoustic_grand_piano"
}
],
"globalTracks": [
{
"__type": "KGMarkerTrack",
"id": "global-marker",
"trackIndex": 0,
"type": "marker",
"name": "Marker",
"regions": []
},
{
"__type": "KGTempoTrack",
"id": "global-tempo",
"trackIndex": 1,
"type": "tempo",
"name": "Tempo",
"regions": []
},
{
"__type": "KGSignatureTrack",
"id": "global-signature",
"trackIndex": 2,
"type": "signature",
"name": "Key Signature",
"regions": []
},
{
"__type": "KGChordTrack",
"id": "global-chord",
"trackIndex": 3,
"type": "chord",
"name": "Chord",
"regions": []
}
]
}