1974-02-01

Vehicle and Machine Operator Sound Data Acquisition and Reduction System 740685

The unaltered, commercially available instrumentation described in this paper provides an accurate (close to Type 1 sound level meter tolerances) and lightweight (total system-5.25 lb) sound recording system. In conjunction with commercially available programable calculators, this instrumentation enables accurate determination of dosage to various criteria. The applications include construction equipment, lift trucks, farm or yard tractors, private airplanes, military vehicles, highway trucks, motor boats, snowmobiles, etc.

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