Relating speech intelligibility to useful-to-detrimental sound ratios (L)

This letter corrects typographical errors in two previously published regression equations relating measured speech intelligibility scores and useful-to-detrimental sound ratios. The implications of one of these corrections on a more recent paper are shown to be small. A new and more generally applicable relationship is presented that was derived from a larger data set. This new relationship is presented as a better means of estimating expected speech intelligibility from useful-to-detrimental sound ratios in a wide range of rooms.