File size: 1,966 Bytes
07af0d9 1b1e8bb 07af0d9 1b1e8bb 07af0d9 1b1e8bb 07af0d9 1b1e8bb 07af0d9 1b1e8bb 07af0d9 1b1e8bb 07af0d9 1b1e8bb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | ---
license: unknown
task_categories:
- text-to-audio
- audio-to-audio
language:
- en
tags:
- audio
- spatial-audio
- first-order-ambisonics
- foa
- pcm16
- parquet
---
# PhysWave Dataset
Pre-rendered first-order ambisonic (FOA) release derived from Mono-Label-120k.
Each mono source clip is rendered twice: one static trajectory and one
deterministic moving trajectory (`linear`, `circular`, or `approach_recede`).
Audio is stored in parquet rows as an `audio` struct with embedded PCM16 WAV
bytes and a relative path. This audio column contains 4-channel FOA.
FOA convention:
```text
channel order: W, X, Y, Z
W = s / sqrt(2)
X = s * cos(elevation) * cos(azimuth)
Y = s * cos(elevation) * sin(azimuth)
Z = s * sin(elevation)
distance gain = 1 / max(distance_m, 0.5)
moving trajectories use retarded-time propagation at 343 m/s
```
Trajectory waypoints are stored as JSON strings containing 10 Hz arrays:
`[t_seconds, azimuth_deg, elevation_deg, distance_m]`. A 10 second clip has
101 waypoints.
Packing summary:
```json
{
"source_records": 127269,
"rendered_rows": 254538,
"static_rows": 127269,
"moving_rows": 127269,
"missing_source_records": 0,
"moving_type_counts": {
"approach_recede": 42464,
"linear": 42645,
"circular": 42160
},
"split_counts": {
"test": 6436,
"train": 248102
},
"audio_format": "PCM16 WAV",
"sample_rate": 16000,
"channels": 4,
"waypoint_rate_hz": 10,
"waypoints_per_10s_clip": 101,
"renderer_version": "physwave_foa_release_v1_pcm16",
"metadata_path": "/media/volume/Spatial_audio_dataset_upload/metadata.jsonl",
"metadata_shards_dir": "/media/volume/Spatial_audio_dataset_upload/metadata_shards",
"parquet_rows": 254538,
"parquet_split_counts": {
"test": 6436,
"train": 248102
},
"parquet_shard_counts": {
"test": 7,
"train": 249
},
"rows_per_shard": 1000,
"row_group_size": 100,
"audio_column": "audio",
"parquet_compression": "zstd"
}
```
|