Abstract
The paper points to problematic and usually neglected aspects of using listening tests for TTS evaluation. It shows that simple random selection of phrases to be listened to may not cover those cases which are relevant to the evaluated TTS system. Also, it shows that a reliable phrase set cannot be chosen without a deeper knowledge of the distribution of differences in synthetic speech, which are obtained by comparing the output generated by an evaluated TTS system to what stands as a baseline system. Having such knowledge, the method able to evaluate the reliability of listening tests, as related to the estimation of possible invalidity of listening results-derived conclusion, is proposed here and demonstrated on real examples.
The research has been supported by the Technology Agency of the Czech Republic, project No. TA01030476 and by the European Regional Development Fund (ERDF), project “New Technologies for Information Society” (NTIS), European Centre of Excellence, ED1.1.00/02.0090.
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Tihelka, D., Grůber, M., Hanzlíček, Z. (2013). Robust Methodology for TTS Enhancement Evaluation. In: Habernal, I., Matoušek, V. (eds) Text, Speech, and Dialogue. TSD 2013. Lecture Notes in Computer Science(), vol 8082. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40585-3_56
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DOI: https://doi.org/10.1007/978-3-642-40585-3_56
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