Intelligibility of conversational and clear speech in noise and reverberation for listeners with normal and impaired hearing

K. L. Payton, R. M. Uchanski, L. D. Braida

Research output: Contribution to journalArticlepeer-review

202 Scopus citations

Abstract

The effect of articulating clearly on speech intelligibility is analyzed for ten normal-hearing and two hearing-impaired listeners in noisy, reverberant, and combined environments. Clear speech is more intelligible than conversational speech for each listener in every environment. The difference in intelligibility due to speaking style increases as noise and/or reverberation increase. The average difference in intelligibility is 20 percentage points for the normal-hearing listeners and 26 percentage points for the hearing-impaired listeners. Two predictors of intelligibility are used to quantify the environmental degradations: The articulation index (AI) and the speech transmission index (STI). Both are shown to predict, reliably, performance levels within a speaking style for normal-hearing listeners. The AI is unable to represent the reduction in intelligibility scores due to reverberation for the hearing-impaired listeners. Neither predictor can account for the difference in intelligibility due to speaking style.

Original languageEnglish
Pages (from-to)1581-1592
Number of pages12
JournalJournal of the Acoustical Society of America
Volume95
Issue number3
DOIs
StatePublished - Mar 1994

Fingerprint

Dive into the research topics of 'Intelligibility of conversational and clear speech in noise and reverberation for listeners with normal and impaired hearing'. Together they form a unique fingerprint.

Cite this