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Mining Product: HLSim - NIOSH Hearing Loss Simulator

Original creation date: June 2002

The NIOSH Hearing Loss Simulator is a software training and communication tool for promoting hearing loss prevention. It allows a user or trainer to demonstrate the effects of noise exposure on hearing without experiencing an actual noise-induced hearing loss.

HLSim is a Windows®-based program that displays a "control panel" for playing sounds while adjusting the simulated effects of noise and aging. A simulated individual's age (in years) can be entered along with the years of exposure to noise (in A-weighted decibels). The effects are shown visually on the frequency band control panel and sound level display screen while the user listens to the audio playback.

This completely rewritten version of HLSim adds compatibility with the latest 32 and 64-bit Windows® operating systems and now supports mp3 sound files and other popular audio file formats.


  • Windows Installer 3.1 or later;
  • Pentium 1 GHz or higher with at least 512 MB RAM;
  • Minimum disk space: 32 bit version - 850 MB, 64 bit version - 2 GB

Installation instructions:

  • Download the appropriate ZIP archive (32 bit or 64 bit)
  • Unpack it into a temporary folder and run Setup.exe.

The software can be downloaded from this page, or ordered on CD. The download archive also includes the NIOSH Hearing Loss Simulator Instruction and Training Guide.

Authors: NIOSH

Audience: Trainers, workers, and hearing loss professionals

Software (Windows) - December 2010

  • 32-bit
  • 64-bit
  • Order CD

Version: 3.0.1215.1

NIOSHTIC2 Number: 20029843

Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2010 Dec