Horizontal directivity patterns differ between vowels extracted from running speech

Paulina Kocon · Brian B. Monson

35 citations0/0 files storedThe Journal of the Acoustical Society of America

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Phonetics and Phonology Research Speech and Audio Processing Voice and Speech Disorders

Abstract

Directivity patterns for vocalizations radiating from the human mouth have been examined regularly, but phoneme-specific changes in radiation have rarely been identified. This study reports half-plane horizontal directivity up to 20 kHz with 15° angular resolution for /ɑ/, /e/, /i/, /o/, and /u/ extracted from running speech, compared with long-term averaged speech. An effect of vowel category on the directivity index was observed, with /ɑ/ being most directional. Angle-dependent third-octave band weighting functions, useful for simulating real-world listening conditions, highlighted disparities in directivity between running speech and individual vowels. These findings point to rapidly changing dynamic directivity patterns during speech.

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2012Horizontal directivity of low- and high-frequency energy in speech and singing 2012Analysis of high-frequency energy in long-term average spectra of singing, speech, and voiceless fricatives

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