The role of F0 variation in the intelligibility of Mandarin sentences

Yi Xu

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Phonetics and Phonology Research Speech Recognition and Synthesis Neurobiology of Language and Bilingualism

Abstract

This study tested the importance of F0 variation for tone language comprehension.The intelligibility of Mandarin sentences with natural F0 contours was compared to the intelligibility of monotone (flat-F0) sentences created via speech resynthesis.In a quiet background, flat-F0 speech was just as intelligible as natural speech (about 94% intelligible), highlighting the robustness of the language comprehension system.However, when babble noise was added (0 db SNR) flat-F0 speech was substantially less intelligible than natural speech (60% vs. 80% intelligible), indicating that F0 variation is very important for Mandarin sentence intelligibility in noise.

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References

1998Language discrimination by newborns: Toward an understanding of the role of rhythm.2007Speech perception at the interface of neurobiology and linguistics 1992Information for Mandarin Tones in the Amplitude Contour and in Brief Segments 2007Sentence recognition in native- and foreign-language multi-talker background noise 2004Perception of Mandarin Lexical Tones when F0 Information is Neutralized 2007The role of fundamental frequency contours in the perception of speech against interfering speech 2009Speech perception at the interface of neurobiology and linguistics 2004The functional load of tone in Mandarin is as high as that of vowels

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