Abstract
Information normally associated with pitch, such as intonation, can still be conveyed in whispered speech despite the absence of voicing. For example, it is possible to whisper the question ‘‘You are going today?’’ without any syntactic information to distinguish this sentence from a simple declarative. It has been shown that pitch change in whispered speech is correlated with the simultaneous raising or lowering of several formants [e.g., M. Kiefte, J. Acoust. Soc. Am. 116, 2546 (2004)]. However, spectral peak frequencies associated with formants have been identified as important correlates to vowel identity. Spectral peak frequencies may serve two roles in the perception of whispered speech: to indicate both vowel identity and intended pitch. Data will be presented to examine the relative importance of several acoustic properties including spectral peak frequencies and spectral shape parameters in both the production and perception of whispered vowels. Speakers were asked to phonate and whisper vowels at three different pitches across a range of roughly a musical fifth. It will be shown that relative spectral change is preserved within vowels across intended pitches in whispered speech. In addition, several models of vowel identification by listeners will be presented. [Work supported by SSHRC.]
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