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New system for monitoring exposure to impulsive noise |
| Authors |
Kardous-CA; Murphy-WJ |
| Source |
Inter-Noise 2005. The 34th International Congress and Exposition on Noise Control Engineering, 07-10 August 2005, Rio de Janeiro, Brazil. West Lafayette, IN: International Institute of Noise Control Engineering, 2005 Aug; :1-9 |
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| NIOSHTIC No. |
20028238 |
| Abstract | The U.S. National Institute for Occupational Safety and Health (NIOSH) developed a measurement and analysis system for accurately capturing and monitoring exposure to impulsive noise. The system consists of a Type 1, high intensity measurement microphone, a 24-bit data acquisition board with 96 kHz sampling rate, and a software tool that uses a graphical user interface (GUI) built in MATLAB to display the time domain waveform, frequency spectrum, and (1/1) and (113) octave band spectra of the captured impulse noise event. Additionally, parameters such as peak pressure level, equivalent average level, kurtosis, time duration, number of impulses, and temporal spacing between impulses are also calculated and displayed. An impulse detection routine was developed to aid in the location and analysis of impulsive events. Once the impulsive events have been identified, the program uses the three major damage risk criteria in use today (LeqA-8hr, MIL-STD 1474D, and Price/Kalb Auditory Hazard Units) to determine the limits for exposure to a particular impulsive noise event. | | Keywords | Noise; Noise-measurement; Impulse-noise; Monitoring-systems; Exposure-levels; Equipment-design; Acoustic-trauma; Hearing-loss | | Contact | National Institute for Occupational Safety and Health, Division of Applied Research and Technology, 4676 Columbia Parkway, Cincinnati, OH 45226 | | Publication Date | 20050807 | | Document Type | Conference/Symposia Proceedings | | Email Address | ckardous@cdc.gov | | Fiscal Year | 2005 | | NTIS Accession No. | | | NTIS Price | | | NIOSH Division | DART | | Source Name | Inter-Noise 2005. The 34th International Congress and Exposition on Noise Control Engineering, 07-10 August 2005, Rio de Janeiro, Brazil | | State | OH |
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