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Ultrasound biofeedback in second-language English tense-lax vowel pronunciation training
What is it about?
This study investigated the efficacy of ultrasound biofeedback compared to a traditional acoustic input-only method in the L2 production training of English tense-lax vowel contrasts (/i-ɪ/ and /e-ɛ/). The relationship between the degrees of production and perception learning was also examined to explore a potential L2 production-perception link.
Why is it important?
The results indicate that ultrasound feedback is effective in second-language pronunciation training. However, its efficacy is not significantly greater than the traditional audio-only training.