| # PhysWave Mono-Label FOA Release |
|
|
| This directory contains pre-rendered first-order ambisonic (FOA) audio derived |
| from Mono-Label-120k mono clips. Each source mono clip is rendered twice: |
|
|
| - one static trajectory |
| - one deterministic moving trajectory (`linear`, `circular`, or `approach_recede`) |
|
|
| Audio files are 10 second, 16 kHz, 4-channel PCM16 WAV. |
|
|
| 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 |
| ``` |
|
|
| Angles are in degrees. Distances are in meters. Metadata stores 10 Hz |
| waypoints, so a normal 10 second render has 101 waypoints: |
| `[t_seconds, azimuth_deg, elevation_deg, distance_m]`. |
|
|
| 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" |
| } |
| ``` |
|
|
