Acoustic Correlates of Stress in English Noun Phrases and Compounds: Korean Learners of English vs. Native Speakers
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This paper investigates the phonetic implementation of contrastive stress in English compounds and noun phrases produced by Korean learners of English and native speakers. The data was collected from 20 speakers (13 Korean learners at an intermediate level and 7 native speakers of North American English). The three most reliable phonetic correlates of English stress, namely pitch, duration, and intensity were measured across the production of the first words and second words for 10 pairs of compounds and phrases in carefully controlled statement sentences. The results showed that native speakers and Korean speakers differ in their use of acoustic patterns. The native speakers of English implement pitch and intensity as reliable cues to distinguish compounds from their phrasal counterpart whereas Korean learners do not exhibit any acoustical differentiation in compounds and phrases. These results suggest that Korean learners of English fail to achieve English-like stress in compounds and phrasal nouns in their real utterances.
Abstract
This paper investigates the phonetic implementation of contrastive stress in English compounds and noun phrases produced by Korean learners of English and native speakers. The data was collected from 20 speakers (13 Korean learners at an intermediate level and 7 native speakers of North American English). The three most reliable phonetic correlates of English stress, namely pitch, duration, and intensity were measured across the production of the first words and second words for 10 pairs of compounds and phrases in carefully controlled statement sentences. The results showed that native speakers and Korean speakers differ in their use of acoustic patterns. The native speakers of English implement pitch and intensity as reliable cues to distinguish compounds from their phrasal counterpart whereas Korean learners do not exhibit any acoustical differentiation in compounds and phrases. These results suggest that Korean learners of English fail to achieve English-like stress in compounds and phrasal nouns in their real utterances.
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