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Effects of fundamental frequency and vocal tract resonance on speech recognition in noise by non-native listeners
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Effects of fundamental frequency and vocal tract resonance on speech recognition in noise by non-native listeners
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Journal Article
Effects of fundamental frequency and vocal tract resonance on speech recognition in noise by non-native listeners
2025
Overview
The present study examined the influence of changes in speakers’ fundamental frequency (fo) and vocal tract resonance (VTR) on speech recognition in different types of noise by non-native listeners. The goal was to identify whether the fo-VTR relationship has a similar effect on non-native listeners as it does on native listeners. Twenty-six adults who were native Mandarin speakers learning English as a second language were presented with English Hearing-in-Noise Test (HINT) sentences in four voice conditions with the original male speaker's fo doubled and/or VTR scaled up by a factor of 1.2: (1) low fo low VTR (LfoLVTR, the original recordings); (2) low fo high VTR (LfoHVTR); (3) high fo high VTR (HfoHVTR), and (4) high fo low VTR (HfoLVTR). The stimuli were presented in speech-shaped noise (SSN) and four-talker babble (FTB) at signal-to-noise ratios of −3, 0, +3 dB. The results showed that the non-native listeners performed more poorly with fo-VTR mismatched voices than with fo-VTR matched voices and the negative influence of mismatched voice features was mainly manifested in the HfoLVTR condition. Compared to SSN, FTB had a greater adverse impact on the non-native listeners’ recognition accuracy. Further, the performance difference between matched and mismatched conditions showed distinct patterns across SSN and FTB.
Publisher
EDP Sciences
Subject
