Effect of relative and overall amplitude on perception of voiceless stop consonants by listeners with normal and impaired hearing

Mark Hedrick, Laura Schulte, Walt Jesteadt

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Previous studies of the /p/-/t/ contrast for normal-hearing listeners have shown that both manipulation of the amplitude of the burst relative to the vowel in the F4-F5 frequency region and overall presentation level can influence the perception of place of articulation [R. N. Ohde and K. N. Stevens, J. Acoust. Soc. Am. 74, 706-714 (1983); Gravel and Ohde, Asha 25, 101 (1983)], such that greater burst amplitude in the high frequencies and higher presentation levels result in more alveolar responses. The influence of relative amplitude and presentation level was tested for both normal-hearing (NH) and hearing-impaired (HI) listeners in the present study. Synthetic CV stimuli were used, and the amplitude of the burst relative to vowel-onset amplitude in the F4-F5 frequency region was manipulated across a 20-dB range. In addition, overall presentation level was varied across a 45-dB range. The findings revealed that the hearing-impaired listeners selected more alveolar responses than listeners with normal hearing when tested at equivalent SPLs. A group of five normal-hearing listeners were then presented the synthetic stimuli in a background of broadband noise at a level that produced thresholds at 4 kHz equivalent to the thresholds of five hearing-impaired listeners. Results from the noise-masked normal-hearing listeners did not consistently show more alveolar responses as presentation level of the stimuli was increased, thus failing to mimic the responses from the hearing-impaired listeners in quiet.

Original languageEnglish (US)
Pages (from-to)1292-1303
Number of pages12
JournalJournal of the Acoustical Society of America
Volume98
Issue number3
DOIs
StatePublished - Jan 1 1995

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hearing
stimuli
bursts
vowels
Listeners
Stop Consonants
Voiceless Stops
Hearing Impairment
gravels
thresholds
manipulators
Hearing
broadband
Stimulus
Alveolars

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Cite this

Effect of relative and overall amplitude on perception of voiceless stop consonants by listeners with normal and impaired hearing. / Hedrick, Mark; Schulte, Laura; Jesteadt, Walt.

In: Journal of the Acoustical Society of America, Vol. 98, No. 3, 01.01.1995, p. 1292-1303.

Research output: Contribution to journalArticle

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