Trends in listening to personal stereos.
Long term use of personal stereo players (PSP) is now established as a potential risk to hearing health if exposure levels are not maintained at what are accepted as safe levels. Comparison of PSP user test results indicate that mean listening levels (L(Aeq)) have decreased from 86.1 dB in 2002/03 to 81.3 dB in 2008 and mean exposure levels (L(Aeq,8h)) have decreased from 79.8 dB to 74.7 dB over the same time period, in a user population whose mean age has increased from 23.6 years (SD = 5.7) to 26.0 years (SD = 10.5). This reduction in exposure level of 5 dB also means that the percentage of user population at risk of noise injury and subsequent hearing loss has decreased from 25% to 17% when judged by criterion commonly used for workplace occupational noise exposure standards.
Williams
W
W
National Acoustic Laboratories, Chatswood, NSW, Australia. warwick.williams@nal.gov.au
D000161:Acoustic Stimulation / Q000639:trends; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001296:Audiovisual Aids / Q000639:trends*; D001315:Australia / Q000453:epidemiology; D004423:Ear / Q000293:injuries; D004781:Environmental Exposure / Q000032:analysis; D005260:Female; D006309:Hearing; D006317:Hearing Loss, Noise-Induced / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009146:Music; D012307:Risk Factors; D012737:Sex Factors