Document eight verified losslessly compressed transport samples

README.md

@@ -31,3 +31,18 @@ Checkpoints: https://huggingface.co/ben2002chou/notesep
 One original 11.37 MB synthetic blob has been uploaded and downloaded into a
 fresh cache with matching SHA-256. All 4,120 source file paths and sizes also
 match the inventory. The remaining corpus has not been uploaded.
+
+## Larger compression test
+
+Eight complete shards totaling 3.804 GB compressed to 0.802 GB. All eight
+were uploaded, downloaded into a fresh cache, and decompressed; every recovered
+file matched its original SHA-256.
+
+Six synthetic shards compressed to 17.8–20.5% of their original sizes. Two
+recorded shards retained about 99.5% of their original sizes. These are selected
+size-coverage samples, not a random sample or a full-corpus measurement.
+
+Compressed files are under `compression-trial/`, with their source-relative
+paths preserved and `.gz` appended. The accompanying manifest records both
+compressed and original sizes and hashes. Standard gzip restores the bytes;
+no audio resampling or precision conversion is involved.

compression-trial/manifest.json

@@ -0,0 +1,70 @@
+{
+  "codec": "gzip",
+  "scope": "Eight transport samples; not the complete corpus or a standalone training subset",
+  "files": [
+    {
+      "path": "synthetic/tasks/task-00/units/unit-00066/packed/unit-00066-00000.blob",
+      "original_bytes": 519281028,
+      "original_sha256": "ba919f82488cb6546d0cf1b0d3fc7e8c903f132202c8f4d97b4cbb408b82f7de",
+      "compressed_bytes": 105113675,
+      "compressed_sha256": "6e50d3100adb18443a46aecae52bb59bf12ebd1701a0982d02ced342da8de48e",
+      "uploaded_path": "compression-trial/synthetic/tasks/task-00/units/unit-00066/packed/unit-00066-00000.blob.gz"
+    },
+    {
+      "path": "synthetic/tasks/task-12/units/unit-00194/packed/unit-00194-00000.blob",
+      "original_bytes": 553376260,
+      "original_sha256": "6db32a339aa1ae2dd7f5161dca20528dc7feff558ce94ecdad008ef610d0d75a",
+      "compressed_bytes": 107729685,
+      "compressed_sha256": "3ce20688a2a58d6a3b6b71187ce3c05792cba2c6a0529f1e53660bd1e7f77215",
+      "uploaded_path": "compression-trial/synthetic/tasks/task-12/units/unit-00194/packed/unit-00194-00000.blob.gz"
+    },
+    {
+      "path": "synthetic/tasks/task-08/units/unit-00198/packed/unit-00198-00000.blob",
+      "original_bytes": 588033356,
+      "original_sha256": "f8bffc4b6ef597006585ab29bb81c32e42227057f1e60a0992ade57517fa9f4d",
+      "compressed_bytes": 104454240,
+      "compressed_sha256": "10859c6e261c2353dbe39c59dbffd1baf1edb056ced76b0a8700675251272b51",
+      "uploaded_path": "compression-trial/synthetic/tasks/task-08/units/unit-00198/packed/unit-00198-00000.blob.gz"
+    },
+    {
+      "path": "synthetic/tasks/task-05/units/unit-00103/packed/unit-00103-00000.blob",
+      "original_bytes": 622424388,
+      "original_sha256": "493ab6c4102cf13cb21652fc82021372a591fe7a2afc1f56078d9cd0c6298f85",
+      "compressed_bytes": 117365294,
+      "compressed_sha256": "8147695b72b8c22421051844bc156507e989f0b92dd8b2418cc62c0cc5d2dc78",
+      "uploaded_path": "compression-trial/synthetic/tasks/task-05/units/unit-00103/packed/unit-00103-00000.blob.gz"
+    },
+    {
+      "path": "synthetic/tasks/task-13/units/unit-00106/packed/unit-00106-00000.blob",
+      "original_bytes": 651238116,
+      "original_sha256": "c6f46d1aa472c6ae728a1cc051cb2c1357d538fc45f836f779b8adacbf97aa14",
+      "compressed_bytes": 116877109,
+      "compressed_sha256": "72db7ad11ff6255108899e3af008e80ab3146c78cb08b0b5c79e629570fd6431",
+      "uploaded_path": "compression-trial/synthetic/tasks/task-13/units/unit-00106/packed/unit-00106-00000.blob.gz"
+    },
+    {
+      "path": "synthetic/tasks/task-02/units/unit-00121/packed/unit-00121-00000.blob",
+      "original_bytes": 777789176,
+      "original_sha256": "98f04da879a1d23b9e5b3176da5e0e9b96cf768112160e52c20b91ae6a6b8f47",
+      "compressed_bytes": 159063782,
+      "compressed_sha256": "52bb567fde8431c7f350287445f71a66104673902472b6de2256b684b13ae425",
+      "uploaded_path": "compression-trial/synthetic/tasks/task-02/units/unit-00121/packed/unit-00121-00000.blob.gz"
+    },
+    {
+      "path": "recorded/shard-02/scenes-00000.blob",
+      "original_bytes": 40792652,
+      "original_sha256": "863e10ac010780fc4e3c57fba521a5f68e84de4f2044cf77fba912b04a5447fa",
+      "compressed_bytes": 40584375,
+      "compressed_sha256": "2bf73c4d6e875de2b4b0c3c9d8169788b781fa899da20dd3da20a94f37bc4165",
+      "uploaded_path": "compression-trial/recorded/shard-02/scenes-00000.blob.gz"
+    },
+    {
+      "path": "recorded/shard-06/scenes-00000.blob",
+      "original_bytes": 51222211,
+      "original_sha256": "43ae5a33a7a05a6b3d222088bcc5f0facbde2e7ef60f80259e410b638f83a36b",
+      "compressed_bytes": 50978807,
+      "compressed_sha256": "b08e8f9000aef802f608fbfbcbd0ebe1eb8d3217eb64928a89abb42bce8e0f5a",
+      "uploaded_path": "compression-trial/recorded/shard-06/scenes-00000.blob.gz"
+    }
+  ]
+}