Horn testing device

Details Horn testing device Horn testing device

1975-09-18

1977-01-18

Olms, Douglas W.

H04R 2900

Patent

active

040041115

ABSTRACT:
An apparatus and method for testing electric horns. A sound-detecting fixture includes an elongated progressive wave tube containing a mass of sound-absorptive material and a means for seating a horn adjacent one end of the tube. Sound detecting means are interposed between the horn and sound-absorptive material to detect the sound level output of the horn. A sound audit station includes a source of electric power for the horn and an amplifier and display indicator for presenting the horn sound-level signals.

REFERENCES:
patent: 1973081 (1934-09-01), Keiser
patent: 2224909 (1940-12-01), Hackley
patent: 2394613 (1946-02-01), Houlgate et al.
patent: 2558550 (1951-06-01), Fiske
patent: 2806544 (1957-09-01), Witchey
patent: 3725584 (1973-04-01), Kilmer et al.

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