{
  "nc_version": "0.1",
  "title": "D♯ dominant 7th arpeggio (up/down), take 4",
  "creator": {
    "name": "Petrus",
    "link": "https://musicmatter.art/"
  },
  "license": "CC-BY-SA-4.0",
  "audio": "https://audio.musicmatter.art/sounds/dsharp7-arp-updown-4.flac",
  "format": {
    "mime": "audio/flac",
    "container": "flac",
    "codec": "flac",
    "lossless": true,
    "sample_rate": 48000,
    "bit_depth": 24,
    "channels": 2,
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  "sha256": "c8ec423726fd624980d73c24ebd426e726a02e2b3b77b08ee68092e0f37b8826",
  "type": "arpeggio",
  "key": "G# major",
  "chords": [
    "D#7"
  ],
  "loopable": false,
  "loop": {
    "audio": "https://audio.musicmatter.art/sounds/dsharp7-arp-updown-4.flac",
    "loop_start": 104714,
    "loop_end": 209441,
    "sample_rate": 48000,
    "length_frames": 104727,
    "length_s": 2.181812,
    "bars": 1,
    "bpm": 110,
    "region": "bar 2 (from just before strike 2 to just before strike 3)",
    "crossfade": 980,
    "crossfade_ms": 20.417,
    "crossfade_shape": "equal-power",
    "crossfade_mode": "tail-into-pre-roll",
    "spec": "https://musicmatter.art/CHANGELOG.md (v7.2: loop entry)"
  },
  "register": {
    "low": "G3",
    "high": "D#4",
    "root": "D#4",
    "bass": "G3",
    "inversion": "first"
  },
  "arpeggio": {
    "direction": "up-down",
    "pattern": "1-2-3-4-3-2",
    "cycle": [
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      "A#3",
      "C#4",
      "D#4",
      "C#4",
      "A#3"
    ],
    "pitch_order": "ascending-descending",
    "pitch_order_note": "ascending then descending in pitch (note octaves settled by a pYIN cross-check of the FFT detector)",
    "note_count": 32,
    "bars": 2,
    "restarts_each_bar": true,
    "rate": {
      "note_value": "1/16",
      "bpm": 110,
      "step_s": 0.13636,
      "meter": "4/4"
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    "notes": [
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      "A#3",
      "C#4",
      "D#4",
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      "A#3",
      "C#4",
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    "duration_s": 4.364
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  "midi": "../midi/dsharp7-arp-updown-4.mid",
  "midi_info": {
    "derived_from_audio": true,
    "source": "audio_analysis",
    "confidence": "high",
    "method": "per-note onset analysis of this clip (FFT flux detector, octaves cross-checked with pYIN)",
    "timing": "32 sixteenth notes at 110 BPM 4/4 from 0 s (2 bars), nominal gate 92%, velocity 96",
    "notes": [
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