Ambulatory monitoring of Lombard-related vocal characteristics in vocally healthy female speakers

Thomas H. Whittico, Andrew J. Ortiz, Katherine L. Marks, Laura E. Toles, Jarrad H. Van Stan, Robert E. Hillman, Daryush D. Mehta

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Speakers typically modify their voice in the presence of increased background noise levels, exhibiting the classic Lombard effect. Lombard-related characteristics during everyday activities were recorded from 17 vocally healthy women who wore an acoustic noise dosimeter and ambulatory voice monitor. The linear relationship between vocal sound pressure level and environmental noise level exhibited an average slope of 0.54 dB/dB and value of 72.8 dB SPL at 50 dBA when correlation coefficients were greater than 0.4. These results, coupled with analyses of spectral and cepstral vocal function measures, provide normative ambulatory Lombard characteristics for comparison with patients with voice-use related disorders.

Original languageEnglish (US)
Pages (from-to)EL552-EL558
JournalJournal of the Acoustical Society of America
Issue number6
StatePublished - Jun 1 2020
Externally publishedYes

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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