Extrinsic normalization for vocal tracts depends on the signal, not on attention
InProceedings of the 13th Annual Conference of the International Speech Communication Association (Interspeech 2012)
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SW OZ DCC PL
SW OZ BSI OLO
SW OZ DCC BO
Proceedings of the 13th Annual Conference of the International Speech Communication Association (Interspeech 2012)
SubjectDI-BCB_DCC_Theme 1: Language and Communication; Learning and Plasticity; Psycholinguistics
When perceiving vowels, listeners adjust to speaker-specific vocal-tract characteristics (such as F1) through "extrinsic vowel normalization". This effect is observed as a shift in the location of categorization boundaries of vowel continua. Similar effects have been found with non-speech. Non-speech materials, however, have consistently led to smaller effect-sizes, perhaps because of a lack of attention to non-speech. The present study investigated this possibility. Non-speech materials that had previously been shown to elicit reduced normalization effects were tested again, with the addition of an attention manipulation. The results show that increased attention does not lead to increased normalization effects, suggesting that vowel normalization is mainly determined by bottom-up signal characteristics.
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