Acoustic Trauma Caused by the Telephone
作者:
Jean-Philippe Guyot,
期刊:
ORL
(Karger Available online 1988)
卷期:
Volume 50,
issue 5
页码: 313-318
ISSN:0301-1569
年代: 1988
DOI:10.1159/000276006
出版商: S. Karger AG
关键词: Acoustic trauma;Temporary threshold shift;Cord-type telephone;Cordless telephone
数据来源: Karger
摘要:
Two patients with acoustic trauma resulting from the use of telephones have been evaluated. Both patients used a particular type of telephone which had the ringing device located in the ear receiver and no automatic gain control in the circuit. The output of the bell recorded on one of these telephones was in the 139-dB range on the A scale. The auditory insult resulted, in the case involving a cord-type telephone, from the transmission of a loud, extraneous sound probably due to a misfunction of the circuit and, in the second case, from the patient holding his cordless telephone against his ear when ringing occurred.
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