15
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: not found
      • Article: not found

      Reverberation time and maximum background-noise level for classrooms from a comparative study of speech intelligibility metrics

      ,
      The Journal of the Acoustical Society of America
      Acoustical Society of America (ASA)

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Related collections

          Most cited references9

          • Record: found
          • Abstract: not found
          • Article: not found

          A review of the MTF concept in room acoustics and its use for estimating speech intelligibility in auditoria

            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Speech intelligibility studies in classrooms.

            Speech intelligibility tests and acoustical measurements were made in ten occupied classrooms. Octave-band measurements of background noise levels, early decay times, and reverberation times, as well as various early/late sound ratios, and the center time were obtained. Various octave-band useful/detrimental ratios were calculated along with the speech transmission index. The interrelationships of these measures were considered to evaluate which were most appropriate in classrooms, and the best predictors of speech intelligibility scores were identified. From these results ideal design goals for acoustical conditions for classrooms were determined either in terms of the 50-ms useful/detrimental ratios or from combinations of the reverberation time and background noise level.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              On the combined effects of signal-to-noise ratio and room acoustics on speech intelligibility.

              Speech intelligibility in rooms is influenced by room acoustics effects and by the signal-to-noise ratio (S/N) of the speech and ambient noise. Several measures such as useful-to-detrimental sound ratios and the speech transmission index predict the combined effects of both types of factors. These measures were evaluated relative to speech intelligibility test results obtained in simulated sound fields. The use of simulated sound fields made it possible to create the full range of combinations of room acoustics and S/N effects likely to be found in rooms for speech. The S/N aspect is shown to be much more important than room acoustics effects and new broadband useful-to-detrimental ratios were validated. Useful-to-detrimental ratios, speech transmission index measures, and values of the articulation loss for consonants were all reasonably accurate predictors of speech intelligibility. Further improvements to these combined measures are suggested.
                Bookmark

                Author and article information

                Journal
                The Journal of the Acoustical Society of America
                The Journal of the Acoustical Society of America
                Acoustical Society of America (ASA)
                0001-4966
                February 2000
                February 2000
                : 107
                : 2
                : 861-875
                Article
                10.1121/1.428268
                23666968-aad2-4c9b-8435-a4747603438b
                © 2000
                History

                Comments

                Comment on this article