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Perceptual Consequences of Variability in Native and Non-Native Speech
Melissa M Baese-Berk1, Tuuli H Morrill2
1Department of Linguistics, University of Oregon, Eugene, Oregon, USA, mbaesebe@uoregon.edu.
Phonetica
|May 22, 2019
Summary
Speaking rate variability impacts non-native speech intelligibility but not perceived fluency. Understanding variability in non-native speech can enhance current speech perception models.
Area of Science:
- Linguistics
- Speech Perception
- Phonetics
Background:
- Native speakers struggle with non-native speech, often due to signal variability.
- Existing speech perception models rarely incorporate non-native speech challenges.
- Speaking rate variability is a key factor in non-native speech perception.
Purpose of the Study:
- Investigate the impact of speaking rate variability on non-native speech perception.
- Examine how speaking rate affects intelligibility and perceived fluency.
- Contribute to a more nuanced understanding of non-native speech variability.
Main Methods:
- Two listener groups assessed non-native speech.
- One group performed speech transcription for intelligibility measurement.
- The second group rated speaker fluency.
Main Results:
- Speaking rate variability significantly correlated with non-native speech intelligibility.
- Variability in speaking rate did not predict perceived fluency ratings.
- Non-native speech variability is not a uniform characteristic.
Conclusions:
- Speaking rate is a crucial element influencing non-native speech intelligibility.
- Perceived fluency is less directly affected by speaking rate variability.
- Further research on non-native speech variability can refine perception theories.
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