Abstract
This paper deals with the influence of different voice quality frames (‘tense voice’, ‘neutral voice’, ‘breathy voice’) preceding and following stop closure silence, on lenis/fortis perception, cued by a closure duration continuum. It also looks at the importance of the overall energy level and of the closure release cycle for the stop categorization. ‘Tense voice’ shows a fortis bias, compared with ‘breathy voice’, but ‘neutral voice’ clusters with the latter. The voice quality effect has a pre-closure and a post-closure component. Overall energy does not affect lenis/fortis perception if it results from a proportional change of all amplitude values; it is the spectral energy distribution that cues the opposition: a high ratio of the lower (below 1000Hz) and the upper portion of the spectrum, as in ‘breathy’ and ‘neutral voice’, favours lenis. The stop closure release cycle contributes to the lenis/fortis dichotomy as a local feature within a global voice quality frame.
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