Historical Vignette Spondees for Speech Recognition Thresholds Perspective
Perspective  |   November 01, 1997
Historical Vignette
 
Author Affiliations & Notes
  • Wayne O. Olsen, PhD
    Mayo Clinic, Audiology, Section, 200 First Street SW, Rochester, MN 55905
Article Information
Hearing & Speech Perception / Perspectives
Perspective   |   November 01, 1997
Historical Vignette
American Journal of Audiology, November 1997, Vol. 6, 5. doi:10.1044/1059-0889.0603.05
History: Received May 5, 1997 , Accepted June 20, 1997
 
American Journal of Audiology, November 1997, Vol. 6, 5. doi:10.1044/1059-0889.0603.05
History: Received May 5, 1997; Accepted June 20, 1997
What are the relative merits of sentence material and word lists in testing speech reception?” (Carhart, 1946, p. 339) was one of the questions Carhart sought to answer in his 1946 article in the Journal of the Acoustical Society of America. At that time, Bell Telephone Intelligibility Sentence Lists (Fletcher & Steinberg, 1929) were being used to determine thresholds for speech.
In his study, Carhart compared pure-tone thresholds for 512 Hz, 1024 Hz, 2048 Hz; the best single threshold between 512 and 2048 Hz; and the average of thresholds from 256 to 4096 Hz, from 512 to 2048 Hz, from 512 to 4096 Hz, and from 1024 to 4096 Hz, to thresholds for speech established with sentences from the Bell Telephone Intelligibility Sentence Lists. These comparisons were completed for 129 veterans with hearing impairments at Deshon General Hospital in Butler, Pennsylvania.
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