Evaluation of speech processing for telephone use by older adult listeners with hearing loss
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Publisher:Ohio State University. Department of Speech and Hearing Science
Series/Report no.:Ohio State University. Department of Speech and Hearing Science. Doctor of Audiology Capstone Projects. 2007
Telephone communication is a significant difficulty for many older adults with hearing loss. Due to communication difficulties that counselors at the Franklin County Office on Aging experienced with many callers with hearing loss, The Ohio State University Department of Speech and Hearing Science and the Department of Electrical and Computer Engineering developed a speech enhancement algorithm. This algorithm pre-processes speech on the talker's end before being sent over the telephone line. Twenty older adults with hearing loss participated in Experiment 1 of this study to determine the best speech intelligibility test (phoneme-based test, sentence test, or signal-to- noise ratio [S/N] test) for evaluating the performance of older adult listeners with sensorineural hearing loss over the telephone. Results revealed an improvement in speech perception with processing and indicated that the representative S/N test, the Quick Speech in Noise test, was the most effective and efficient test for this evaluation. Thirty older adults participated in Experiment 2, which verified that the commercial version of the speech processing algorithm led to an improvement in the speech recognition abilities of older adults over the telephone, and confirmed that this improvement was equal to the improvements resulting from the laboratory version.
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