Improving grapheme-to-phoneme conversion by learning pronunciations from speech recordings

• URL: http://arxiv.org/abs/2307.16643v1
• Date: Mon, 31 Jul 2023 13:25:38 GMT
• Title: Improving grapheme-to-phoneme conversion by learning pronunciations from speech recordings
• Authors: Manuel Sam Ribeiro, Giulia Comini, Jaime Lorenzo-Trueba
• Abstract summary: The Grapheme-to-Phoneme (G2P) task aims to convert orthographic input into a discrete phonetic representation. We propose a method to improve the G2P conversion task by learning pronunciation examples from audio recordings.
• Score: 12.669655363646257
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The Grapheme-to-Phoneme (G2P) task aims to convert orthographic input into a discrete phonetic representation. G2P conversion is beneficial to various speech processing applications, such as text-to-speech and speech recognition. However, these tend to rely on manually-annotated pronunciation dictionaries, which are often time-consuming and costly to acquire. In this paper, we propose a method to improve the G2P conversion task by learning pronunciation examples from audio recordings. Our approach bootstraps a G2P with a small set of annotated examples. The G2P model is used to train a multilingual phone recognition system, which then decodes speech recordings with a phonetic representation. Given hypothesized phoneme labels, we learn pronunciation dictionaries for out-of-vocabulary words, and we use those to re-train the G2P system. Results indicate that our approach consistently improves the phone error rate of G2P systems across languages and amount of available data.

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