Equally Contributing Frequency Bands in Intelligibility Testing

Abstract

Five adult males read and recorded 9 speaker lists of multiple-choice tests, form C and D, and the alternative forms C-1 and D-1. The same speakers recorded 81 words each from the phonetically-balanced word list. Listeners were 44 men who were entering the naval pilot training program. Groups A and B included 22 men who heard the material under full-band high-pass conditions, Group C and D, listened under full-band at low-pass conditions. The 20 bands of frequencies that contribute equally to intelligibility scores were identified in this study.