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Study of Microphone/speaker-to-miner Interface.

Authors
Giordano-TA
Source
NTIS: PB/266-028 Available for Reference At Bureau Libraries :66 pages
Link
NIOSHTIC No.
10001382
Abstract
Portable communications equipment is becoming increasingly important in underground mining. Proper selection of microphones and hearing devices to be part of these communication systems is essential if the messages are to be transmitted intelligibly. In this program a thorough study of the requirements for these transducers was made with respect to intelligibility, mechanical configuration, human factors, and safety. A computer analysis was made to predict how several combinations of transducers would perform at typical mining noise levels. A survey has been made of those microphones and hearing devices on the market today that might be applicable to the miner communication system. Several systems are proposed and evaluated.
Publication Date
19760101
Document Type
CP; Final Contract Report;
Fiscal Year
1976
NTIS Accession No.
PB-266028
NTIS Price
A05
Identifying No.
OFR 69-77
NIOSH Division
PRC;
Source Name
NTIS: PB/266-028 Available for Reference At Bureau Libraries
Performing Organization
Epsco Laboratories
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