File size: 1,493 Bytes
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 | # 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"
}
```
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