By EA LAB
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NIOSH estimates that 22 million workers are exposed to hazardous noise levels every year. In addition to damaging workers’ quality of life, occupational hearing loss carries a high economic burden. The NIOSH Sound Level Meter (SLM) app can be used by safety and health professionals and industrial hygienists to assess risks, similar to how they would use a professional sound level meter, and by workers to make informed decisions about the potential hazards to their hearing in the workplace. The app allows the user to acquire and display real-time noise exposure data and help promote better hearing health and better prevention efforts.
In order to interpret results, it is important to recognize that NIOSH establishes recommended exposure limits (REL) for various hazards on the basis of the best available science and practice. The REL for noise is 85 decibels, as an 8-hour time-weighted average (TWA) using the A-weighting frequency response and a 3-dB exchange rate. Exposures at or above this level are considered hazardous. The app provides a readout of the sound levels using the built-in microphone (or preferably using an external, calibrated, microphone) and reports the instantaneous sound level in A, C, or Z weighted decibels. The app also contains some basic information about noise and hearing loss prevention. In addition, the app allows the user to save and share measurement data with others using the device communication and media features. For additional information and detailed guidance on how to use the app, please visit the NIOSH app page at: https://www.cdc.gov/niosh/topics/noise/app.html
What's New in Version 1.0.2
Minor improvement and bugfixes.
Incredibly valuable tool
This Acoustical Engineer found the NIOSH SLM to be easy to use, very accurate, and powerful as a learning tool. Every feature you'd need to run a noise survey is available in this app. Bravo!