Add lossless training data

.gitattributes

@@ -69,3 +69,4 @@ recorded/shards/shard-05/manifest.sqlite filter=lfs diff=lfs merge=lfs -text
 recorded/shards/shard-06/manifest.sqlite filter=lfs diff=lfs merge=lfs -text
 recorded/shards/shard-07/manifest.sqlite filter=lfs diff=lfs merge=lfs -text
 synthetic/index.sqlite filter=lfs diff=lfs merge=lfs -text
+synthetic/score-index.sqlite filter=lfs diff=lfs merge=lfs -text

example/README.md

@@ -0,0 +1,10 @@
+# One training example
+
+mixture.wav is the input music. target.wav is the isolated note requested from
+that mixture. reference.wav is its DNA reference waveform. notes.json gives
+the note pitch, onset, offset, sample rate and example identifiers.
+
+These are unpacked float32 WAV files for listening and inspection. This folder
+shows one NoteGrab target row, not the complete set of notes for an ASO scene.
+
+Open index.html to listen to the three waveforms together.

example/index.html

@@ -0,0 +1 @@
+<!doctype html><html lang="en"><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>NoteGrab training example</title><body style="max-width:680px;margin:48px auto;padding:0 20px;font:18px/1.5 system-ui"><h1>One NoteGrab training example</h1><p>The same passage as a mixture, an isolated target note, and its reference waveform.</p><h2>Mixture</h2><audio controls src="mixture.wav"></audio><h2>Target note</h2><audio controls src="target.wav"></audio><h2>Reference</h2><audio controls src="reference.wav"></audio><p><a href="notes.json">Note labels and identifiers</a></p></body></html>

example/mixture.wav

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:60c3b42a73c037596cb6e4cc1b8c49b9d341322f81504f2c868eacb4485ce22d
+size 264580

example/notes.json

@@ -0,0 +1,10 @@
+{
+  "pair_id": "cbcb9d1e533d71b4b1c25ac73564bdf6cb08b6ae9732e477b7209f069884f2af",
+  "mixture_id": "c438855a5351b03db00ba7cda753aa51fd92ca7131d4c30ef1e22efcd74438a2",
+  "pitch": 38,
+  "sample_rate": 16000,
+  "onset_seconds": 0.0,
+  "offset_seconds": 0.1220625,
+  "scope": "One NoteGrab target row, not a source-complete ASO scene.",
+  "duration_seconds": 4.1328125
+}

example/reference.wav

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:28ca4e8b4c8ba6c9f8baa5ed69802d34363631e07bbecc9848dc3b9b961a15bf
+size 264580

example/target.wav

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fa316df19dc72d222e95cc6ae3433c8b609da0db2f5b0490a8d5029117f66df0
+size 264580

recorded/README.md

@@ -0,0 +1,5 @@
+# Recorded data
+
+shards/ contains eight groups of recorded score scenes and isolated note targets.
+instrument-coverage.json describes the instrument coverage used by the training
+sampler. The scene indexes keep notes from the same mixture grouped together.

recorded/instrument-coverage.json

@@ -0,0 +1,277 @@
+{
+  "aggregate_instruments": [
+    "acoustic_guitar",
+    "bass_guitar",
+    "cello",
+    "clarinet",
+    "double_bass",
+    "electric_guitar",
+    "flute",
+    "french_horn",
+    "harp",
+    "oboe",
+    "piano",
+    "saxophone",
+    "trombone",
+    "trumpet",
+    "viola",
+    "violin"
+  ],
+  "approved_instruments": [
+    "acoustic_guitar",
+    "bass_guitar",
+    "cello",
+    "clarinet",
+    "double_bass",
+    "electric_guitar",
+    "flute",
+    "french_horn",
+    "harp",
+    "oboe",
+    "piano",
+    "saxophone",
+    "trombone",
+    "trumpet",
+    "viola",
+    "violin"
+  ],
+  "authorities": {
+    "core_manifest": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/manifests/train.sqlite",
+    "core_manifest_sha256": "6b41342aac8f6f0fa646ba5d79a345a19ab96fd600ae5ae1a2f2e490ccc1ed93",
+    "core_view": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/views/occurrence_2m_audio_harmonic_instrument_v2_20260902.json",
+    "core_view_sha256": "0c10443ebc6efb7aebe8ca50c93506dac1c46e8477aa25f5c911519f578a744d",
+    "fluidr3_freeze": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_sound_registry/source_freezes_v2/fluidr3_gm/FROZEN.json",
+    "fluidr3_freeze_sha256": "aa0d77baa34d1f974ae6772f2b8b2f29eaab91477dddbdf5d04b9bb3312f3d9a",
+    "generaluser_freeze": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_sound_registry/source_freezes_v2/generaluser_gs/FROZEN.json",
+    "generaluser_freeze_sha256": "6949ab0147265c0a4d43b8ac7794a0b28b226962883d1bd746f5b6173b2f8716",
+    "supplemental_freeze": "/scratch/gilbreth/chou150/scns_v3/source_lanes/scns_train_v3_isolated_union_20260908/FROZEN.json",
+    "supplemental_freeze_sha256": "f074d9040485c7f6deb6d8ceef2e5f485ec8db27aa75cba14808cef056a48792"
+  },
+  "claim": "Supplemental recorded roots truthfully target 15 canonical instruments; retained core FluidR3/GeneralUser training occurrences provide Viola; aggregate covers all 16.",
+  "core_added_instruments": [
+    "viola"
+  ],
+  "core_viola_examples": [
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858600,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "c56f530ecd3d61ce63e215956e6b744799b1735d8567417bc2ede886e6636e18",
+      "pitch": 65,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858601,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "fe582747ac462c6d29118b252e9fc061572c676a1fb380c80774159dc082f50f",
+      "pitch": 67,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858602,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "3e4b9d1f41a4eae26616e46590ec4d76c0675fe068ae774e03636664ca19bcbc",
+      "pitch": 48,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858603,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "a40b514973575c1db70ddf2b93bcede4cc517fa37b97e08d7bf95fccc004077f",
+      "pitch": 52,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858604,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "1482cb2d32e8060fa4d22f992c08e02d88699b7e5aa103316cee3f4e0840310a",
+      "pitch": 58,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858605,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "2aeeceb6f0cdeb559d38c1751a0112752036f6e9e1d5143b39dae348beac840c",
+      "pitch": 62,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858606,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "31c6a314a148421d296edee7a3afbbd2e523e4b2e09bf856c6945e7977d1e3fa",
+      "pitch": 69,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858607,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "fb732a89cec08a4d163cd82652de80197825d3161600b391539bab0ea83bcfae",
+      "pitch": 41,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858608,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "d157872f025d989a83e1e1e996da45c87dca2707511de80d864749d2bef912c9",
+      "pitch": 57,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858609,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "fe10924bc6940e217aa227f2794aecfd9fb718e985cdee49530c636d6b32b986",
+      "pitch": 60,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858610,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "3a883cdf07c00fe584a0d60d25b8334aa4be1b5376f2dc96de86ca2d271d7dc0",
+      "pitch": 65,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858611,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "776174617229e05e9f77c3c7c56707defab78eed71c03711a6b0ecb3e3005074",
+      "pitch": 67,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858612,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "16e60ccaadd93eb7c6c6928ede49263fdd5772bd98426b127053569f50f83713",
+      "pitch": 67,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858613,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "866e124cb456e194c51fac483d44d9dd6b4ead1254941d9d8bc53f1597fb9342",
+      "pitch": 48,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858614,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "c82211d784a73576de7848deaef6a01bdfb47c520ac1456622615e36b58fa55c",
+      "pitch": 65,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    },
+    {
+      "candidate_id": "bank_000_program_041",
+      "candidate_name": "Viola",
+      "native_hash": "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c",
+      "ordinal": 858615,
+      "packed_root": "/scratch/gilbreth/chou150/mt3_rt2_note_resynthesis/literal_residual_musical_production_v13_2m_20260731_2025/tasks/task-08/units/unit-00106/packed",
+      "pair_id": "902e02222b00a86ca592b4822f5319925b55c83bb4c01f67de3eee48be6c3515",
+      "pitch": 48,
+      "sound_family": "strings",
+      "source_group": "generaluser_gs",
+      "source_id": "generaluser_gs"
+    }
+  ],
+  "core_viola_occurrences": 400,
+  "core_viola_occurrences_by_native_hash": {
+    "2058b02a3950347e9f8ce69274503d280e16a968093e3a461297ad70f8f0867c": 200,
+    "62c34c98ba1ab4028a9bd6a29004ee38afcb4e57f355592087528644ffe7b6a0": 200
+  },
+  "schema": "scns_train_v3_combined_instrument_coverage_v1",
+  "status": "passed",
+  "supplemental_instruments": [
+    "acoustic_guitar",
+    "bass_guitar",
+    "cello",
+    "clarinet",
+    "double_bass",
+    "electric_guitar",
+    "flute",
+    "french_horn",
+    "harp",
+    "oboe",
+    "piano",
+    "saxophone",
+    "trombone",
+    "trumpet",
+    "violin"
+  ],
+  "training_requirement": {
+    "aggregate_require_all_16": true,
+    "reason": "Viola is supplied by the retained frozen core, not relabeled into supplemental data.",
+    "supplemental_root_require_all_16": false
+  }
+}

recorded/shards/README.md

@@ -0,0 +1,5 @@
+# Recorded shards
+
+shard-00/ through shard-07/ each contain packed scene audio, a lookup index
+and the metadata describing that group. The training configuration uses all
+eight folders.

recorded/shards/shard-00/README.md

@@ -0,0 +1,10 @@
+# Recorded scene shard
+
+| File | Contents |
+| --- | --- |
+| scenes-00000.blob.gz | Packed scene waveforms; setup restores scenes-00000.blob. |
+| manifest.sqlite | Scene locations, waveform metadata and note labels. |
+| scenes.jsonl | Scene descriptions referenced by the corpus definition. |
+| FROZEN.json | The scene-group definition and its bound files. |
+| COMPLETE.json | Packed-store completion metadata used by the reader. |
+| audit_report.json | Original materialization checks for this group. |

recorded/shards/shard-01/README.md

@@ -0,0 +1,10 @@
+# Recorded scene shard
+
+| File | Contents |
+| --- | --- |
+| scenes-00000.blob.gz | Packed scene waveforms; setup restores scenes-00000.blob. |
+| manifest.sqlite | Scene locations, waveform metadata and note labels. |
+| scenes.jsonl | Scene descriptions referenced by the corpus definition. |
+| FROZEN.json | The scene-group definition and its bound files. |
+| COMPLETE.json | Packed-store completion metadata used by the reader. |
+| audit_report.json | Original materialization checks for this group. |

recorded/shards/shard-02/README.md

@@ -0,0 +1,10 @@
+# Recorded scene shard
+
+| File | Contents |
+| --- | --- |
+| scenes-00000.blob.gz | Packed scene waveforms; setup restores scenes-00000.blob. |
+| manifest.sqlite | Scene locations, waveform metadata and note labels. |
+| scenes.jsonl | Scene descriptions referenced by the corpus definition. |
+| FROZEN.json | The scene-group definition and its bound files. |
+| COMPLETE.json | Packed-store completion metadata used by the reader. |
+| audit_report.json | Original materialization checks for this group. |

recorded/shards/shard-03/README.md

@@ -0,0 +1,10 @@
+# Recorded scene shard
+
+| File | Contents |
+| --- | --- |
+| scenes-00000.blob.gz | Packed scene waveforms; setup restores scenes-00000.blob. |
+| manifest.sqlite | Scene locations, waveform metadata and note labels. |
+| scenes.jsonl | Scene descriptions referenced by the corpus definition. |
+| FROZEN.json | The scene-group definition and its bound files. |
+| COMPLETE.json | Packed-store completion metadata used by the reader. |
+| audit_report.json | Original materialization checks for this group. |

recorded/shards/shard-04/README.md

@@ -0,0 +1,10 @@
+# Recorded scene shard
+
+| File | Contents |
+| --- | --- |
+| scenes-00000.blob.gz | Packed scene waveforms; setup restores scenes-00000.blob. |
+| manifest.sqlite | Scene locations, waveform metadata and note labels. |
+| scenes.jsonl | Scene descriptions referenced by the corpus definition. |
+| FROZEN.json | The scene-group definition and its bound files. |
+| COMPLETE.json | Packed-store completion metadata used by the reader. |
+| audit_report.json | Original materialization checks for this group. |

recorded/shards/shard-05/README.md

@@ -0,0 +1,10 @@
+# Recorded scene shard
+
+| File | Contents |
+| --- | --- |
+| scenes-00000.blob.gz | Packed scene waveforms; setup restores scenes-00000.blob. |
+| manifest.sqlite | Scene locations, waveform metadata and note labels. |
+| scenes.jsonl | Scene descriptions referenced by the corpus definition. |
+| FROZEN.json | The scene-group definition and its bound files. |
+| COMPLETE.json | Packed-store completion metadata used by the reader. |
+| audit_report.json | Original materialization checks for this group. |

recorded/shards/shard-06/README.md

@@ -0,0 +1,10 @@
+# Recorded scene shard
+
+| File | Contents |
+| --- | --- |
+| scenes-00000.blob.gz | Packed scene waveforms; setup restores scenes-00000.blob. |
+| manifest.sqlite | Scene locations, waveform metadata and note labels. |
+| scenes.jsonl | Scene descriptions referenced by the corpus definition. |
+| FROZEN.json | The scene-group definition and its bound files. |
+| COMPLETE.json | Packed-store completion metadata used by the reader. |
+| audit_report.json | Original materialization checks for this group. |

recorded/shards/shard-07/README.md

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+# Recorded scene shard
+
+| File | Contents |
+| --- | --- |
+| scenes-00000.blob.gz | Packed scene waveforms; setup restores scenes-00000.blob. |
+| manifest.sqlite | Scene locations, waveform metadata and note labels. |
+| scenes.jsonl | Scene descriptions referenced by the corpus definition. |
+| FROZEN.json | The scene-group definition and its bound files. |
+| COMPLETE.json | Packed-store completion metadata used by the reader. |
+| audit_report.json | Original materialization checks for this group. |

synthetic/README.md

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+# Synthetic data
+
+| Path | Contents |
+| --- | --- |
+| index.sqlite | Two million training rows linking each target note to its mixture and packed audio. |
+| shards/ | Float32 waveform data, distributed in losslessly compressed blobs. |
+| timing/ | Duration geometry and measured acoustic note ends. |
+| sampling.json | Frozen training and validation row selection. |
+| sounds.json | Source sound identities. |
+| score-index.sqlite | Full-score conditioning used by the training loss. |
+| shards.jsonl | The original shard identifiers referenced by the training index. |
+| metadata.zip, metadata.json | Per-shard lookup tables and their catalogue, managed by the loader. |
+| FROZEN.json | The corpus definition binding these files together. |
+
+The index and archived metadata retain the original training identities.
+The setup command maps them to the local folders; no machine-specific paths
+need to be edited by hand.

synthetic/score-index.sqlite

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+version https://git-lfs.github.com/spec/v1
+oid sha256:730406847e80da9ce5fcbf01f5faf8b594eef73126040e3548bcc9e374a8f7be
+size 471941120

synthetic/shards/README.md

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+# Audio shards
+
+Files 00000.blob.gz through 04038.blob.gz contain the original packed float32
+waveforms. Setup restores each file to the same name without .gz. The index
+selects the required byte range, so training reads individual examples without
+loading a whole shard. These blobs are not WAV files.

synthetic/timing/README.md

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+# Timing
+
+acoustic-offsets/ contains measured note-release information for the two million
+training rows. duration-geometry/ contains the note bounds and waveform lengths
+used to form variable-length training crops.

synthetic/timing/acoustic-offsets/README.md

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+# Acoustic note ends
+
+Each acoustic_offsets_*.npy array stores one part of the row-aligned acoustic
+release information. Its matching .json file records the covered row range.
+All twelve parts are used together.

synthetic/timing/duration-geometry/README.md

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+# Crop geometry
+
+duration_geometry.npy stores row ordinals, waveform lengths and note bounds.
+CONTRACT.json describes the array and its correspondence to the training index.