README.md

---
pretty_name: "Language-based Audio Retrieval Dataset"
configs:
- config_name: corpus
  data_files:
  - split: train
    path: "data/corpus.parquet"
- config_name: queries
  data_files:
  - split: train
    path: "data/query.parquet"
- config_name: qrels
  data_files:
  - split: train
    path: "data/qrels.parquet"
language:
- en
license:
- other
task_categories:
- other
tags:
- audio
- dcase
- retrieval
size_categories:
- 1k<n<10k
---

# Language-based Audio Retrieval Dataset

This dataset is derived from the **DCASE 2022 Challenge Task 6 (Subtask B) - Language-based Audio Retrieval** evaluation dataset, originally published on [Zenodo](https://zenodo.org/records/6590983).

## Overview

This dataset contains 1,000 audio files paired with natural language captions, designed for evaluating language-based audio retrieval systems. The dataset has been preprocessed and structured into parquet files for efficient loading and processing in machine learning workflows.

## Dataset Structure

### Files

- **`corpus.parquet`** (1000 entries)  
  Contains the audio corpus with embedded binary audio data.
  - `file_name`: Name of the audio file
  - `sound_id`: Unique identifier for each sound (from Freesound)
  - `audio`: Binary audio data (WAV format)

- **`query.parquet`** (1000 queries)  
  Contains natural language queries/captions for retrieval.
  - `query_id`: Identifier matching the sound_id
  - `query`: Natural language description of the audio

- **`qrels.parquet`** (1000 relevance judgments)  
  Ground truth relevance judgments for evaluation.
  - `query_id`: Query identifier
  - `corpus_id`: Corpus item identifier
  - `score`: Relevance score (1 = relevant)

### Original Source Files

- **`retrieval_audio/`**: Directory containing 1,000 WAV audio files
- **`retrieval_audio_metadata.csv`**: Metadata for each audio file including:
  - File name, keywords, sound_id, Freesound URL
  - Start/end samples, manufacturer, license information
- **`retrieval_captions.csv`**: Natural language captions for each audio file
- **`retrieval_audio.7z`**: Compressed archive of audio files

### Utility Files

- **`dataset_creator.ipynb`**: Jupyter notebook used to process and create the parquet files
- **`requirements.txt`**: Python dependencies
- **`LICENSE`**: License information

## Dataset Statistics

- **Total audio files**: 1,000
- **Audio format**: WAV (various sample rates from Freesound)
- **Caption format**: Single natural language description per audio file
- **Audio sources**: Freesound platform
- **Average audio duration**: ~15-30 seconds (variable)

## Usage Example

```python
import pandas as pd
import pyarrow.parquet as pq

# Load the corpus
corpus = pq.read_table('corpus.parquet').to_pandas()
print(f"Corpus shape: {corpus.shape}")

# Load queries
queries = pq.read_table('query.parquet').to_pandas()
print(f"Number of queries: {len(queries)}")

# Load relevance judgments
qrels = pq.read_table('qrels.parquet').to_pandas()
print(f"Number of relevance judgments: {len(qrels)}")

# Access audio binary data
audio_binary = corpus.iloc[0]['audio']

# Access caption/query
caption = queries.iloc[0]['query']
print(f"Example caption: {caption}")
```

## Example Data

### Sample Audio Caption
> "A liquid continuously being poured out and hitting a bottom base."

### Sample Metadata
- **File**: `drainage pipe running.wav`
- **Keywords**: atmosphere, field-recording, nature, spring, water, woods, forest, ambient
- **Sound ID**: 235940
- **Freesound Link**: https://freesound.org/people/odilonmarcenaro/sounds/235940
- **License**: CC BY 3.0

## Task Description

This dataset is designed for **language-based audio retrieval**, where the goal is to:
1. Given a natural language query (caption), retrieve the most relevant audio clip(s) from the corpus
2. Evaluate retrieval performance using standard metrics (e.g., Recall@K, Mean Average Precision)

Each query has exactly one relevant audio file in the corpus (1-to-1 mapping).

## Source Dataset Information

### Original Dataset
- **Name**: Language-based audio retrieval DCASE 2022 evaluation dataset
- **Version**: 1.0
- **Published**: May 29, 2022
- **Creator**: Samuel Lipping (Tampere University)
- **DOI**: [10.5281/zenodo.6590983](https://doi.org/10.5281/zenodo.6590983)

### Audio Source
All audio files are sourced from the [Freesound](https://freesound.org) platform and are licensed under various Creative Commons licenses. Please refer to `retrieval_audio_metadata.csv` for specific license information for each file.

### Development Dataset
This is the **evaluation dataset** for DCASE 2022 Task 6B. For training and development, use the **Clotho v2.1 dataset** available at: https://zenodo.org/record/4783391

## License

- **Audio files**: Licensed under various Creative Commons licenses as specified in `retrieval_audio_metadata.csv` (from Freesound platform)
- **Captions**: Tampere University license (see `LICENSE` file)

## Citation

If you use this dataset, please cite:

```bibtex
@dataset{lipping_2022_6590983,
  author       = {Lipping, Samuel},
  title        = {{Language-based audio retrieval DCASE 2022 
                   evaluation dataset}},
  month        = may,
  year         = 2022,
  publisher    = {Zenodo},
  version      = {1.0},
  doi          = {10.5281/zenodo.6590983},
  url          = {https://doi.org/10.5281/zenodo.6590983}
}
```

## References

1. Frederic Font, Gerard Roma, and Xavier Serra. 2013. Freesound technical demo. In Proceedings of the 21st ACM international conference on Multimedia (MM '13). ACM, New York, NY, USA, 411-412. DOI: https://doi.org/10.1145/2502081.2502245

2. DCASE 2022 Challenge: https://dcase.community/challenge2022/

3. Lipping, S. (2022). Language-based audio retrieval DCASE 2022 evaluation dataset (1.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.6590983

## Related Links

- [Original Dataset on Zenodo](https://zenodo.org/records/6590983)
- [Freesound Platform](https://freesound.org)
- [DCASE Challenge](https://dcase.community/)
- [Clotho v2.1 Development Dataset](https://zenodo.org/record/4783391)