Method and apparatus for determining the location of a sound sou

Details Method and apparatus for determining the location of a sound sou Method and apparatus for determining the location of a sound sou

1990-04-10

1991-10-22

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73592, 367125, G01M 324

Patent

active

050584197

ABSTRACT:
An apparatus and method for determining the location of a pipe leak detects the pipe leak sound at a first remote location and at a second remote location, and generates first and second signals indicative of the sound. A time lay between the first and second signals is calculated at each of a plurality of frequencies. Integer multiplies of an associated period are added to each time lag to form a plurality of potential time delays at each of the plurality of frequencies. The plurality of potential time delays at all of the plurality of frequencies are stored in a memory. The time delay value which occurs most frequently is selected from the memory and is utilized to calculate the location of the sound source relative to the first and second locations. The invention can also be employed to determined the location of a sound source other than a pipe leak.

REFERENCES:
patent: 3532867 (1970-10-01), Ricketts, Jr. et al.
patent: 4289019 (1981-09-01), Claytor
patent: 4333170 (1982-06-01), Mathews et al.
patent: 4581758 (1986-04-01), Coker et al.

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