README.md

---
language:
  - ru
  - vi
  - ar
license: cc-by-4.0
task_categories:
  - text-to-speech
  - automatic-speech-recognition
tags:
  - tts
  - speech
  - audio
  - multilingual
  - legal
  - dialogue
pretty_name: Multilingual TTS Corpus
size_categories:
  - n<1K
---

# Multilingual TTS Corpus

A multilingual text-to-speech dataset containing audio recordings with text transcriptions across multiple languages. This is the first batch; more languages will be added over time.

## Languages (Batch 1)

| Subset | Language | Audio Files | Annotation Format | Source |
|---|---|---|---|---|
| `ru-tts/` | Russian | 10 | JSONL (single file) | 俄语TTS（文本标注及语音）基石数据集 #294 |
| `ru-speech/` | Russian | 5 | JSONL (single file) | 俄语高质量语音音频语料库 #481 |
| `vi-speech/` | Vietnamese | 5 | JSONL (single file) | 越南语高质量语音音频语料库 #483 |
| `ar-tts/` | Arabic | 10 | JSON (per-utterance) | 阿拉伯语TTS（文本标注及语音）基石数据集 #210 |
| `vi-legal-dialogue/` | Vietnamese | 13 | JSONL (single file) | Vietnamese Legal Consultation Dialogue Dataset |

## Directory Structure

```
multilingual-tts-corpus/
├── README.md
├── ru-tts/
│   ├── audio/          # 10 WAV files
│   └── annotations/    # audio.jsonl
├── ru-speech/
│   ├── audio/          # 5 WAV files
│   └── annotations/    # part.jsonl
├── vi-speech/
│   ├── audio/          # 5 WAV files
│   └── annotations/    # part.jsonl
├── ar-tts/
│   ├── audio/          # 10 WAV files
│   └── annotations/    # 10 JSON files (one per utterance)
└── vi-legal-dialogue/
    ├── audio/          # 13 WAV files (multi-turn legal dialogues)
    └── annotations/    # dialogues.jsonl
```

## Audio Format

All audio files share the same format:

- **Format:** WAV
- **Sample Rate:** 16,000 Hz
- **Bit Depth:** 16-bit
- **Channels:** Mono

## Annotation Schema

Each annotation entry contains:

```json
{
  "id": "uuid",
  "audio": {
    "path": "...",
    "format": "WAV",
    "sample_width": "16 bits",
    "sample_rate": "16000 Hz",
    "channels": "1",
    "duration": "N.NN s",
    "snr": "NN dB"
  },
  "labels": {
    "pjwk_cates": {
      "level1": ["category"],
      "level2": ["subcategory"]
    }
  },
  "text": {
    "content": "transcription text..."
  }
}
```

### Key Fields

| Field | Description |
|---|---|
| `id` | Unique utterance identifier (UUID) |
| `audio.duration` | Audio duration in seconds |
| `audio.snr` | Signal-to-noise ratio |
| `labels.pjwk_cates` | Two-level content category |
| `text.content` | Text transcription |

## vi-legal-dialogue

Vietnamese legal consultation dialogue dataset. 13 multi-turn dialogues covering labor law and contract law topics. Each entry contains the full dialogue transcript (tab-separated turns) paired with audio. Originally from `obaydata/vietnamese-legal-dialogue`.

- **Audio:** WAV, 44100 Hz, 16-bit, stereo
- **Annotation:** `dialogues.jsonl` — one JSON object per dialogue
- **Text format:** Multi-turn, each line: `<turn>\t<speaker>\t<text>`
- **Domain:** Legal consultation (Labor law, Contract law)
- **License:** CC-BY-4.0

## Adding New Languages

To add a new language batch:

1. Create a new directory: `{lang}-tts/` or `{lang}-speech/`
2. Place WAV files in `audio/` and annotations in `annotations/`
3. Follow the same annotation schema above
4. Update this README table

## License

CC-BY-4.0

## Citation

```bibtex
@dataset{obaydata_multilingual_tts_2026,
  title={Multilingual TTS Corpus},
  author={ObayData},
  year={2026},
  publisher={Hugging Face},
  url={https://huggingface.co/datasets/obaydata/multilingual-tts-corpus}
}
```