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arXiv · 1901.03601

Advanced Rich Transcription System for Estonian Speech

Tanel Alumäe·Ottokar Tilk·Asadullah
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Abstract

This paper describes the current TT\"U speech transcription system for Estonian speech. The system is designed to handle semi-spontaneous speech, such as broadcast conversations, lecture recordings and interviews recorded in diverse acoustic conditions. The system is based on the Kaldi toolkit. Multi-condition training using background noise profiles extracted automatically from untranscribed data is used to improve the robustness of the system. Out-of-vocabulary words are recovered using a phoneme n-gram based decoding subgraph and a FST-based phoneme-to-grapheme model. The system achieves a word error rate of 8.1% on a test set of broadcast conversations. The system also performs punctuation recovery and speaker identification. Speaker identification models are trained using a recently proposed weakly supervised training method.

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Tanel Alumäe, Ottokar Tilk, Asadullah. 2019-01-11. Advanced Rich Transcription System for Estonian Speech. https://doi.org/10.3233/978-1-61499-912-6-1

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