NIOSH

Measure Noise Pollution using Free NIOSH Sound Level Meter Smartphone App

[Revised July 10, 2019] There are lots of Smartphone sound level meter apps, but most aren’t accurate or free. Many pretend to be free but cost money to change the default settings to public health recommended settings for environmental noise. The noise scientists at the National Institute of Occupational Safety & Health in the U.S. …

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Ethics of NIHL, HHL-TTS Denial & Scientific Journal Trust

Physically there is no difference between occupational and recreational noise trauma. Loud noise or music causes triple hearing system damage: permanent hidden hearing nerve damage [HHL], temporary or permanent tinnitus-hyperacusis, and NIHL [Noise-Induced Hearing Loss] that is either temporary from short/occasional unprotected exposure or permanent from chronic unprotected exposure. Kujawa and Liberman identified HHL or …

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