Methodological aspects of segment- and speaker-related variability. A study of segmental durations in Dutch  

Oleh:

Rietveld, T. ; Heuvel, H. van den ; Cranen, B.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Phonetics vol. 22 no. 4 (Sep. 1994), page 389 - 406.

Ketersediaan

Perpustakaan PKBB Nomor Panggil: 405/JOP/22 Non-tandon: tidak ada Tandon: 1

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Isi artikel

This paper addresses a number of issues concerning the effects of speaker idiosyncrasies on phonetic regularities (in this case of segmental durations). First, a comparison is made between the amount of speaker-related variability and the amount of segment related variability. Next, we show a ranking of segments according to their speaker idiosyncrasy. And, finally, we point out a way in which the observed speaker idiosyncrasies may be incorporated in phonetic rule models. We start out with three durational analyses on 24 /CVCe/ quasi-Dutch nonsense words collected from five male and five female speakers who read the words ten times in isolation. The vowels used were /a, i, u/; the consonants, which appeared once in C2-position and once in C2-position, were /p, t, k, d, s, m, n, r/. It is demonstrated that a segment-related effect may be confounded by speaker idiosyncrasies. We discuss how such speaker-related effects can be evaluated with respect to a phonetic rule system in a methodologically proper manner. For this purpose we introduce "obligatory" (speaker-independent) and "optional" (speaker independent) rules. However, this can only successfully be carried out if some a priori criteria have been defined. These criteria concern the percentage criteron needed to claim that a rule is active and the statistical power that is needed to render reliable results.

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