Method of determining standard sound levels

Details Method of determining standard sound levels Method of determining standard sound levels

1976-03-22

1977-09-20

Queisser, Richard C.

Measuring and testing

Speed, velocity, or acceleration

Centrifugal weight type

G01H 310

Patent

active

040488608

ABSTRACT:
To determine standardized values of noise levels of machines a sound recording and reproducing instrument is employed to record the sound emission from a sound source of the type to be investigated. The recording and reproducing instrument is used as a reference source to obtain measured values of sound level on a standard and on a freely selected measuring place under standard conditions. The difference of the two values is applied to the value of sound level measured for the machine to be investigated on the selected measuring place under said standard conditions to yield standardized values of sound level.

REFERENCES:
patent: 3516285 (1970-06-01), Seney
patent: 3781782 (1973-12-01), Scott et al.
Kundert et al.; Sound and Vibration, "Instrumentation Topics", pp. 16-20; Apr. 1972.

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