---
language:
- vi
pretty_name: Vietnamese IPA Dataset
tags:
- audio
- text-to-speech
- vietnamese
- ipa
- phonetics
- pronunciation
license: apache-2.0
task_categories:
- text-to-speech
- automatic-speech-recognition
size_categories:
- n<1K
---

# Vietnamese IPA Dataset

A comprehensive Vietnamese IPA (International Phonetic Alphabet) dataset with word pronunciations and MP3 audio files for text-to-speech and pronunciation learning applications.

## Dataset Description

### Dataset Summary

This dataset contains 50 common Vietnamese words with their IPA (International Phonetic Alphabet) transcriptions and corresponding audio files. It's designed for:
- Text-to-speech systems development
- Vietnamese pronunciation learning
- Phonetic research
- Language learning applications

### Supported Tasks

- **Text-to-Speech**: Generate Vietnamese speech from text
- **Pronunciation Learning**: Learn correct Vietnamese pronunciation with IPA
- **Phonetic Analysis**: Study Vietnamese phonetics with accurate IPA transcriptions

### Languages

Vietnamese (`vi`)

## Dataset Structure

### Data Instances

Each instance contains:
- A Vietnamese word or phrase
- Its IPA transcription with tone marks
- Path to the corresponding MP3 audio file

### Data Fields

- `file_name` (Audio): Audio file path that will be automatically loaded by Hugging Face Datasets
- `word` (string): Vietnamese word or phrase
- `ipa` (string): IPA transcription with tone marks

### Data Splits

The dataset contains a single training split with 50 examples.

## Dataset Creation

### Curation Rationale

This dataset was created to provide a simple, accessible resource for Vietnamese pronunciation with accurate IPA transcriptions and audio, addressing the lack of small-scale Vietnamese phonetic datasets.

### Source Data

#### Initial Data Collection

Words were selected from common Vietnamese vocabulary including:
- Greetings and basic phrases
- Family terms
- Numbers
- Time expressions
- Common nouns and verbs

### Annotations

#### Annotation Process

IPA transcriptions were created following standard Vietnamese phonetic conventions, including tone marks:
- ˧˧ (33): Level tone (ngang)
- ˨˩ (21): Falling tone (huyền)
- ˧˩ˀ (32ˀ): Falling-rising tone (hỏi)
- ˧˥ (35): Rising tone (sắc)
- ˧˩˧ (313): Broken tone (ngã)
- ˨˩ˀ (21ˀ): Drop tone (nặng)

Audio files were generated using Google Text-to-Speech (gTTS) for consistency.

## Usage

### Quick Start

```python
from datasets import load_dataset

# Load the dataset from Hugging Face Hub
dataset = load_dataset("undertheseanlp/uts2025_vietipa")

# Access the data
for example in dataset['train']:
    word = example['word']
    ipa = example['ipa']
    audio = example['file_name']  # Audio object with array, path, and sampling_rate
    print(f"{word}: {ipa}")
    print(f"Audio path: {audio['path']}")
    print(f"Audio sampling rate: {audio['sampling_rate']} Hz")
```

### Audio Processing Example

```python
from datasets import load_dataset

# Load the dataset
dataset = load_dataset("undertheseanlp/uts2025_vietipa")

# Process audio data
for example in dataset['train'].select(range(3)):  # First 3 examples
    word = example['word']
    ipa = example['ipa']
    audio = example['file_name']

    print(f"Word: {word}")
    print(f"IPA: {ipa}")
    print(f"Audio shape: {audio['array'].shape}")
    print(f"Sampling rate: {audio['sampling_rate']} Hz")
    print("-" * 40)
```

### Local Development

This project uses `uv` for dependency management:

```bash
# Install dependencies
uv sync

# Generate audio files
uv run python generate_audio.py generate

# Display dataset
uv run python generate_audio.py display

# Add new word
uv run python generate_audio.py add "xin lỗi" "sin˧˧ loj˧˩"

# Interactive example
uv run python example_usage.py
```

## Example Data

### Sample JSONL Records

```json
{"file_name": "audio/xin_chao.mp3", "word": "xin chào", "ipa": "sin˧˧ caːw˨˩"}
{"file_name": "audio/cam_on.mp3", "word": "cảm ơn", "ipa": "kaːm˧˩ ʔəːn˧˧"}
{"file_name": "audio/viet_nam.mp3", "word": "Việt Nam", "ipa": "viət˧˩ˀ naːm˧˧"}
{"file_name": "audio/nuoc.mp3", "word": "nước", "ipa": "nɨək˧˥"}
{"file_name": "audio/yeu.mp3", "word": "yêu", "ipa": "iəw˧˧"}
```

### Data Table View

| Audio File | Word | IPA |
|------------|------|-----|
| audio/xin_chao.mp3 | xin chào | sin˧˧ caːw˨˩ |
| audio/cam_on.mp3 | cảm ơn | kaːm˧˩ ʔəːn˧˧ |
| audio/viet_nam.mp3 | Việt Nam | viət˧˩ˀ naːm˧˧ |
| audio/nuoc.mp3 | nước | nɨək˧˥ |
| audio/yeu.mp3 | yêu | iəw˧˧ |

## Considerations for Using the Data

### Social Impact

This dataset promotes Vietnamese language learning and preservation through accurate phonetic representations.

### Limitations

- Limited to 50 common words (suitable for basic applications)
- Audio generated via TTS, not native speaker recordings
- IPA transcriptions follow Northern Vietnamese dialect
- May not capture all regional pronunciation variations

### Recommendations

- For production systems, consider native speaker recordings
- Expand vocabulary for comprehensive coverage
- Add regional dialect variations if needed

## Additional Information

### Dataset Curators

Created for educational and research purposes in Vietnamese phonetics and pronunciation.

### IPA Package

Tipa package for LaTeX is used for IPA symbols:
- CTAN link: https://ctan.org/pkg/tipa
- Documentation:
https://sg.mirrors.cicku.me/ctan/fonts/tipa/tipa/doc/tipaman.pdf

### Licensing Information

This dataset is released under the Apache 2.0 License.

### Citation Information

If you use this dataset, please cite:

```bibtex
@dataset{vietnamese_ipa_2025,
  author = {Trang Phan, Vu Anh},
  organization = {Underthesea NLP}
  title = {Vietnamese IPA Dataset},
  year = {2025},
  publisher = {Hugging Face},
  url = {https://huggingface.co/datasets/undertheseanlp/uts2025_vietipa}
}
```

### Contributions

Contributions are welcome! Please feel free to:
- Add more words with IPA transcriptions
- Improve existing IPA transcriptions
- Add native speaker recordings
- Include regional dialect variations