The effect of clear speech to foreign-sounding interlocutors on native listeners’ perception of intelligibility

Kangatharan, Dr Jayanthiny; Uther, Professor Maria; Gobet, Professor Fernand

doi:10.1016/j.specom.2023.04.005

Speech Communication

2023

DOI: 10.1016/j.specom.2023.04.005

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The effect of clear speech to foreign-sounding interlocutors on native listeners’ perception of intelligibility

Dr Jayanthiny Kangatharan

Professor Maria Uther

Professor Fernand Gobet

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Cited by 2 publications

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Selective tuning of nasal coarticulation and hyperarticulation across slow-clear, casual, and fast-clear speech styles

Cohn,

Zellou

2023

JASA Express Letters

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This study investigates how California English speakers adjust nasal coarticulation and hyperarticulation on vowels across three speech styles: speaking slowly and clearly (imagining a hard-of-hearing addressee), casually (imagining a friend/family member addressee), and speaking quickly and clearly (imagining being an auctioneer). Results show covariation in speaking rate and vowel hyperarticulation across the styles. Additionally, results reveal that speakers produce more extensive anticipatory nasal coarticulation in the slow-clear speech style, in addition to a slower speech rate. These findings are interpreted in terms of accounts of coarticulation in which speakers selectively tune their production of nasal coarticulation based on the speaking style.

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Selective tuning of nasal coarticulation and hyperarticulation across slow-clear, casual, and fast-clear speech styles

Cohn,

Zellou

2023

JASA Express Letters

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Comparing perception of L1 and L2 English by human listeners and machines: Effect of interlocutor adaptations

Vonessen,

Aoki,

Cohn

et al. 2024

The Journal of the Acoustical Society of America

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Speakers tailor their speech to different types of interlocutors. For example, speech directed to voice technology has different acoustic-phonetic characteristics than speech directed to a human. The present study investigates the perceptual consequences of human- and device-directed registers in English. We compare two groups of speakers: participants whose first language is English (L1) and bilingual L1 Mandarin-L2 English talkers. Participants produced short sentences in several conditions: an initial production and a repeat production after a human or device guise indicated either understanding or misunderstanding. In experiment 1, a separate group of L1 English listeners heard these sentences and transcribed the target words. In experiment 2, the same productions were transcribed by an automatic speech recognition (ASR) system. Results show that transcription accuracy was highest for L1 talkers for both human and ASR transcribers. Furthermore, there were no overall differences in transcription accuracy between human- and device-directed speech. Finally, while human listeners showed an intelligibility benefit for coda repair productions, the ASR transcriber did not benefit from these enhancements. Findings are discussed in terms of models of register adaptation, phonetic variation, and human-computer interaction.

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The effect of clear speech to foreign-sounding interlocutors on native listeners’ perception of intelligibility

Cited by 2 publications

References 47 publications

Selective tuning of nasal coarticulation and hyperarticulation across slow-clear, casual, and fast-clear speech styles

Selective tuning of nasal coarticulation and hyperarticulation across slow-clear, casual, and fast-clear speech styles

Comparing perception of L1 and L2 English by human listeners and machines: Effect of interlocutor adaptations

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