We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Speech Recognition in an Enclosure with a Long Reverberation Time.
- Authors
Kociński, Jędrzej; Ozimek, Edward
- Abstract
The aim of this work was to measure subjective speech intelligibility in an enclosure with a long reverberation time and comparison of these results with objective parameters. Impulse Responses (IRs) were first determined with a dummy head in different measurement points of the enclosure. The following objective parameters were calculated with Dirac 4.1 software: Reverberation Time (RT), Early Decay Time (EDT), weighted Clarity (C50) and Speech Transmission Index (STI). For the chosen measurement points, a convolution of the IRs with the Polish Sentence Test (PST) and logatome tests was made. PST was presented at a background of a babble noise and speech reception threshold - SRT (i.e. SNR yielding 50% speech intelligibility) for those points were evaluated. A relationship of the sentence and logatome recognition vs. STI was determined. It was found that the final SRT data are well correlated with speech transmission index (STI), and can be expressed by a psychometric function. The difference between SRT determined in condition without reverberation and in reverberation conditions appeared to be a good measure of the effect of reverberation on speech intelligibility in a room. In addition, speech intelligibility, with and without use of the sound amplification system installed in the enclosure, was compared.
- Subjects
INTELLIGIBILITY of speech; SPEECH perception; REVERBERATION time; NOISE; ACOUSTICS research
- Publication
Archives of Acoustics, 2016, Vol 41, Issue 2, p255
- ISSN
0137-5075
- Publication type
Article
- DOI
10.1515/aoa-2016-0025