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Abstract:
In this paper we present the study of the influence of velum
variation in time and of the following segment in the perception
of nasality of nasal vowels after a nasal consonant. Studies
consisted of natural speech analysis, simulations, and perceptual
tests. Our results give further support for the theory of nasal
vowels as dynamic sound. Also the context is shown to influence
nasality perception. At the beginning oral closure release
results in an overall energy increase, dominated by lips
radiation. If a high energy segment, such as a oral vowel,
follows the nasal vowel perception of nasality is reduced. It is
necessary a low energy, by dominant nasal radiation at the end.
Nasal vowels can be regarded as diphthongs starting with dominant
lips radiation and tending gradually to a low energy, with nasal
radiation dominance. End configuration can be realized as a
nasalized continuation of the first part or as a glide to the
following segment.
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