| --- |
| 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" |
| } |
| ``` |
|
|
