An investigation of the Auditec of St. Louis recordings of the Central Institute for the Deaf spondees.
The Auditec of St. Louis recordings of the Central Institute for the Deaf spondees were investigated with normal hearing subjects and found to have an unnecessarily large range of audibility. Consequently, an 18-item test with greater homogeneity of audibility was proposed. Articulation function slopes of about 10% per decibel were obtained with both the 18- and 36-item tests. The articulation function of the 18-item test did not reflect its improved homogeneity. The mean speech reception threshold was 5 dB better than ANSI-1969 specifications, and speech detection threshold was found to be 9 dB better than speech reception threshold. A derived speech reception threshold can be obtained by adding 5 dB to the lowest threshold at which any spondee is identified.
D000047:Academies and Institutes; D000293:Adolescent; D000328:Adult; D001299:Audiometry / Q000592:standards*; D001309:Auditory Threshold; D003638:Deafness; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008923:Missouri; D011594:Psychometrics; D013060:Speech; D013637:Tape Recording