Sound pressure level meter

Details Sound pressure level meter Sound pressure level meter

1979-07-26

1981-03-24

Gill, James J.

Measuring and testing

Vibration

By mechanical waves

G01H 314

Patent

active

042572738

ABSTRACT:
A sound pressure level meter adapted for use in monitoring noise levels, particularly for use by law enforcement agencies wherein the device includes means for providing a logarithmic indication of the root mean square value of ambient sound pressure levels and wherein means are provided for holding and displaying a maximum sound pressure level detected over a given period of time and for providing an alarm when a detected level exceeds a predetermined threshold level.

REFERENCES:
patent: 3661224 (1972-05-01), Allen et al.
patent: 3950700 (1976-04-01), Weisbart
patent: 3968697 (1977-01-01), Mutziger
Gin Rod Corporation Brochure on Model GR 1981 Precision Sound Level Meter.

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