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City Baltimore / Pittsburgh / / Company Welch Allyn / MRT / 95 dB Lp / dB Lp. / 82 dB Lp / Needham / Auditory Research Laboratory / tested using the MRT / / Country United States / / / Event Product Issues / / Facility Auditory Research Laboratory / NIOSH Pittsburgh facility / National Institute / American National Standards Institute / J. Camp / / IndustryTerm Candidate devices / long test protocol / electronic hearing protec tion device / electronic technology / sheet metal stamping / elec tronic processing / machinery / carrier phrase / real-time display / subjects using device / particular device / spatial processing capabilities / munication systems / protection devices / continuous mining machines / sound restoration hearing protection devices / acoustic analysis software package / acoustic and electronic hearing protection devices / commu nication systems / restoration hearing protection devices / electronics / mining / device processing characteristics / underground coal mining / across-the-board solution / safety products / sample devices / / MarketIndex Speech Intelligibility / / Organization NIOSH SII / American National Standards Institute / U.S. Securities and Exchange Commission / National Institute for Occupational Safety and Health / Human Subject Review Board / / Person Amanda S. Azmana / Roberta L. Hudakb / Jack Katz / / Position miner / speaker / researcher / non-absorptive chair / occupational health nurse / licensed audiologist / Governor / gov. technology / / Product continuum / noise / / ProvinceOrState Maryland / Pennsylvania / Massachusetts / / PublishedMedium the Bonferroni post / / Technology HPD technology / speech recognition / ANR technology / processing technology / overly long test protocol / / SocialTag 
An Evaluation of Sound Restoration Hearing Protection Devices and Audibility Issues in Mining