---
license: apache-2.0
task_categories:
- automatic-speech-recognition
- translation
language:
- en
tags:
- lecture
pretty_name: d
size_categories:
- 10M<n<100M
---

# LibriSpeech IPA Phoneme Labels

This repository provides **IPA-based phoneme annotations and lexicon** for the LibriSpeech dataset.

All phoneme labels are converted from **CMU Pronouncing Dictionary (CMU-Dict)** phonemes into **IPA symbols** using deterministic rules, with the help of the following toolkit:

- https://pypi.org/project/pinyin-to-ipa

The data is intended for **phoneme-based ASR**, **P2G/G2P research**, **phoneme CTC / AED models**, and **cross-lingual phoneme experiments**.

## Dataset Structure

- `train-clean-100-phoneme`
- `train-clean-360-phoneme`
- `train-other-500-phoneme`
- `dev-clean-phoneme`
- `dev-other-phoneme`
- `test-clean-phoneme`
- `test-other-phoneme`
- `lexicon.txt`
- `phone_list`