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Biomedical subjects

T Rahko

Publications and source records attributed to T Rahko.

At least 73 records · Page 4Linked to original sources
PubMedDate not supplied

Effect of word speed, number of words, and habituation on the discrimination score of synthesized speech.

The audiologic uses of Synte 2, a speech synthetizer converting text into speech, with unlimited word capacity, are described, One hundred persons with normal hearing, who were divided into four equal groups, listened to 150 to 400 words uttered at speeds equal to rates of 50, 60, 70 and 80 words per minute. Groups of words were uttered at 5-sec intervals at 50 dB SL. After 100 words the listeners' discrimination scores rose to over 80%. The highest mean score was 85%. The results were much the same for all the speeds tried. Synthesized speech affords the only means of producing identical, sensitized-speech tests over and over again. Although naturally the original tapes wear out, master tapes made on different occasions keep the test results constant. Synte 2 also provides an aid for the mute. It makes man-machine communication possible in business and industrial use. It serves a useful purpose in speech pathology and phoniatric examinations. A discussion machine is under development.

Adolescent↗
PubMedDate not supplied

Prevalence of handicapping hearing loss in an aging population.

The mean hearing thresholds of 369 Finnish inhabitants, 65 years, and born in 3 consecutive years on two elected days each year, were studied in high standard measurement conditions. Eighty-nine of these subjects were reexamined 3 years later. They represented a typical partly industrialized white population with a high standard of living. With the criteria for hearing rehabilitation for presbycusis set at a mean hearing threshold of 30 dB or worse at 500 to 1,000 to 2,000 Hz, and/or 50-dB hearing loss at 2,000 Hz, the prevalence of rehabilitation need was 3.2%. Conductive hearing losses were found in 6% of the subjects.

Age Factors↗