Blame for README.md

---
pretty_name: AudioSet-Strong-10
license: other
license_name: audioset-research-use
license_link: https://creativecommons.org/licenses/by/4.0/
task_categories:
- audio-classification
tags:
- sound-event-detection
- audioset
- strong-labels
- temporal-annotations
size_categories:
- 10K<n<100K
---

# AudioSet-Strong-10

A ten-class, strong-label, 10-second-clip subset of **AudioSet-Strong**, with
clip-relative event onsets and offsets. Built for streaming / bounded-latency
sound event detection, where you need per-event times rather than clip tags.

## Classes

| Class | AudioSet MID |
|---|---|
| Alarm | `/m/07pp_mv` |
| Bark | `/m/05tny_` |
| Cough | `/m/01b_21` |
| Explosion | `/m/014zdl` |
| Gunshot | `/m/032s66` |
| Laughter | `/m/01j3sz` |
| Screaming | `/m/03qc9zr` |
| Vehicle horn | `/m/0912c9` |
| Whispering | `/m/02rtxlg` |
| Whistling | `/m/01w250` |

The official strong annotations contain **15,052 train** and **2,217 eval**
unique 10-second clips for these ten classes.

## Coverage in this release

| Split | Official clips | In this release | Coverage |
|---|---:|---:|---:|
| train | 15,052 | 14,521 | 96.5% |
| eval | 2,217 | 2,161 | 97.5% |
| **total** | **17,269** | **16,682** | **96.6%** |

37,832 clip-relative event rows in total. Every clip has at least one event.
`missing.tsv` lists the 404 segment ids that could not be retrieved from
YouTube or from the mirror (the underlying videos are deleted).

Event rows per class (train / eval):

| Class | train | eval |
|---|---:|---:|
| Alarm | 1,509 | 351 |
| Bark | 6,014 | 541 |
| Cough | 2,032 | 368 |
| Explosion | 1,095 | 186 |
| Gunshot | 3,396 | 353 |
| Laughter | 11,250 | 1,918 |
| Screaming | 1,326 | 270 |
| Vehicle horn | 1,832 | 297 |
| Whispering | 1,581 | 308 |
| Whistling | 2,804 | 401 |


## Contents

This repository releases **annotations and identifiers**, not audio:

```
train_events.csv                    path,onset,offset,label
eval_events.csv
missing.tsv                         official clips that were unavailable
short_windows.tsv                   clips whose source audio ends early
oversize_windows.tsv                clips kept at full length
```

Event rows use paths of the form
`audio/<split>/<bucket>/<ytid>_<start_ms>.wav`, where `<bucket>` is the first
two hex digits of a CRC32 of the file stem. That is the layout the audio takes
in the companion repository, so the tables apply directly once the audio is
mounted there.

## Audio

The audio lives in a companion repository,
`LakoreAI/AudioSet-Strong-10-audio` (16,682 clips, same layout), released for
research use subject to the rights of the original uploaders. The annotation
tables here apply to it unchanged.

`<ytid>_<start_ms>` is the official AudioSet `segment_id`: the YouTube id and
the start of the 10-second window in milliseconds. `onset`/`offset` are seconds
**inside the clip** (0-10), so a row is directly usable as a strong label.

One clip can have several rows (several labelled events). Every clip has at
least one event from the ten classes above; other AudioSet classes that occur
in the same window are not annotated here.

## Provenance and completeness

1. Segment ids, labels and event times come from the official
   `audioset_train_strong.tsv` / `audioset_eval_strong.tsv`
   (`storage.googleapis.com/us_audioset`), filtered to the ten MIDs.
2. Audio is the 10-second window containing the labelled event, downloaded
   from YouTube with `yt-dlp` and resampled to 16 kHz mono.
3. Clips whose YouTube video is deleted are recovered from the public
   `CLAPv2/audioset_strong` mirror (same official windows). Annotation times
   still come from the official TSVs; the mirror only supplies audio bytes.
   Harvested clips were cross-checked against the mirror's own event list
   (zero label mismatches).

YouTube attrition is real: a share of the official videos is permanently
unavailable. `missing.tsv` lists the segment ids that could not be obtained
from either source at build time. Coverage is reported in the dataset card
table below and should be re-checked before any comparison with published
numbers on the complete strong set.

## Licence and credit

- Annotations: **CC BY 4.0**, Google AudioSet (Gemmeke et al., 2017).
- Audio: downloaded from YouTube; rights remain with the original uploaders.
  This repository grants no rights over the audio and is released for research
  use, mirroring how AudioSet itself distributes the corpus. It may be removed
  on request.
- The ten-class selection follows the AudioSet-Strong subset used by the
  RED+EPN line of work (Schmid et al.).

## Citation

```bibtex
@misc{audioset_strong_10,
  title  = {AudioSet-Strong-10: ten-class strong labels with 10-second audio},
  author = {LakoreAI},
  note   = {Subset of AudioSet-Strong (Gemmeke et al., 2017)},
  year   = {2026},
  url    = {https://huggingface.co/datasets/LakoreAI/AudioSet-Strong-10}
}
```

## Clips whose source audio is short or over-long

183 clips in `audio_oversize/` are kept exactly as downloaded: the source audio runs past the 10 s window, so they cannot enter the labelled corpus, but they are not discarded.
Clips whose source audio ends slightly before the window are padded with silence to 10.00 s; their true length is listed in `short_windows.tsv` and the events are clipped to it.

### Why clips are missing

Each missing clip was checked with a metadata request. Of the 404:

- **218** deleted or unavailable at the source
- **125** private
- **59** removed (copyright)
- **2** other errors

None is recoverable: the videos no longer exist in any accessible form, so no
credential or client can fetch them. `missing_reasons.tsv` lists the per-clip cause.