Abstract
Prosodic boundaries in speech are of great relevance to both speech synthesis and audio annotation. In this paper, we apply the wav2vec 2.0 framework to the task of detecting these boundaries in speech signal, using only acoustic information. We test the approach on a set of recordings of Czech broadcast news, labeled by phonetic experts, and compare it to an existing text-based predictor, which uses the transcripts of the same data. Despite using a relatively small amount of labeled data, the wav2vec2 model achieves an accuracy of 94% and F1 measure of 83% on within-sentence prosodic boundaries (or 95% and 89% on all prosodic boundaries), outperforming the text-based approach. However, by combining the outputs of the two different models we can improve the results even further.
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Czech language TRransformer from Unlabeled Speech,
available from: https://huggingface.co/fav-kky/wav2vec2-base-cs-80k-ClTRUS.
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Acknowledgements
This research was supported by the Czech Science Foundation (GA CR), project No. GA21-14758S, and by the grant of the University of West Bohemia, project No. SGS-2022-017. Computational resources were supplied by the project “e-Infrastruktura CZ” (e-INFRA CZ LM2018140) supported by the Ministry of Education, Youth and Sports of the Czech Republic.
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Kunešová, M., Řezáčková, M. (2022). Detection of Prosodic Boundaries in Speech Using Wav2Vec 2.0. In: Sojka, P., Horák, A., Kopeček, I., Pala, K. (eds) Text, Speech, and Dialogue. TSD 2022. Lecture Notes in Computer Science(), vol 13502. Springer, Cham. https://doi.org/10.1007/978-3-031-16270-1_31
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