Horizontal directivity patterns differ between vowels extracted from running speech

Paulina Kocon, Brian B. Monson

Research output: Contribution to journalArticlepeer-review


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 /α/, /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 /α/ 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.

Original languageEnglish (US)
Pages (from-to)E7-EL12
JournalJournal of the Acoustical Society of America
Issue number1
StatePublished - Jul 1 2018

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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