Equivalency of Sentence Intelligibility Lists for Audiological Assessment of Naval Personnel and Navy Voice Communication Systems
Medical research progress rept. no. 4
NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
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The purpose of the study was to investigate the equivalency of several sentence intelligibility lists for use in clinical hearing tests of Navy personnel and research facilities requiring figure-of-merit indices of voice communication systems. Ten Central Institute for the Deaf CIF Sentence Intelligibility Lists and revisions of those ten lists R-CID were presented to two groups of 30 listeners each. Scores were the number of correct key words identified for each sentence list. The following results were obtained 1 Two five-list combinations of the CID Sentence Lists A, D, E, G, J and B, D, E, G, J yielded equivalent scores. 2 Seven R-CID Sentence Lists A, C, E, F, G, I, J yielded equivalent scores. 3 The mean scores for eight R-CID Sentence Lists A, B, C, D, E, F, G, J were significantly lower than scores obtained with the corresponding CID lists. 4 The results suggest that both sets of sentence lists contain a sufficient number of equivalent lists to render them useful in most Navy research and clinical settings. The R-CID lists have a slight advantage in that they contain more equivalent lists and appear to be more sensitive to frequency distortion.
- Voice Communications