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Tatham, M. A. A. – 1976
Variability is a term used to cover several types of phenomena in language sound patterns and in phonetic realization of those patterns. Variability refers to the fact that every repetition of an utterance is different, in amplitude, rate of delivery, formant frequencies, fundamental frequency or minor phase relationship changes across the sound…
Descriptors: Articulation (Speech), Language Patterns, Language Research, Linguistic Theory