Effects of Sustained Talking on the Hearing of the Talker.

摘要

The effects on hearing sensitivity of loud talking at 90 dBC for brief durations of 3 to 12 minutes and of sustained talking at 65 DB(A) and 75 dB(A) for periods of 30 to 120 minutes were measured. Loss of hearing sensitivity following speech exposure sessions were attributed to the talking. Results of three studies contained in the report include: (1) Self-generated speech at a level of about 90 dB(C) produced small decreases of 2 to 6 dB in hearing threshold sensitivity following 3 to 12 minute periods of talking; (2) Continuous talking for periods of 30 to 120 minutes at levels of about 65 dB(A) had no effect on the hearing of the talker and (3) sustained speech, either self-generated or presented by loudspeaker, at voice levels of 65 dB(A) and 75 dB(A) for continuous periods up to 120 minutes had no effect on the hearing of the subject. (Author)