A Comparison of Equal-Appearing Interval Scaling and Direct Magnitude Estimation of Nasal Voice Quality

Richard I. Zraick, Julie Liss

    Research output: Contribution to journalReview article

    55 Scopus citations

    Abstract

    Listeners rated the nasality of synthesized vowels using two psychophysical scaling methods (equal-appearing interval scaling and direct magnitude estimation). A curvilinear relationship between equal-appearing interval ratings and direct magnitude estimations of nasality indicated that nasality is a prothetic rather than metathetic dimension. It also was shown that the use of direct magnitude estimation results in nasality ratings that are more consistent and reliable. The results of this experiment are discussed in relation to other studies that have examined the validity and reliability of equal-appearing interval scaling of voice quality. Additionally, there is a discussion of methodological issues for future research and the implications of the findings for clinical and research purposes.

    Original languageEnglish (US)
    Pages (from-to)979-988
    Number of pages10
    JournalJournal of Speech, Language, and Hearing Research
    Volume43
    Issue number4
    DOIs
    StatePublished - Aug 2000

    Keywords

    • Nasality
    • Perception
    • Scaling
    • Voice

    ASJC Scopus subject areas

    • Language and Linguistics
    • Linguistics and Language
    • Speech and Hearing

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