Method for measuring sound absorption power of a theater chair w

Details Method for measuring sound absorption power of a theater chair w Method for measuring sound absorption power of a theater chair w

1993-09-30

1995-11-14

Eley, Timothy V.

Metal working

Method of mechanical manufacture

During simulated operation or operating conditions

29407, 73589, B23Q 1700

Patent

active

054654696

ABSTRACT:
There is provided a method for measuring a sound absorption power of a theater chair with a human being seated thereon. The method includes steps of disposing a theater chair which is an object of measurement in a measuring environment; disposing a dummy sound absorber in the theater chair, the dummy sound absorber having a shape in which it is in contact with the theater chair, a sound absorption power and a chair pressing force in such a manner that the dummy sound absorber simulates a human being seated on the theater chair; causing changes in the theater chair which changes are substantially equivalent to a change in the state of the theater chair caused when a human being gets seated on the chair and a change in the sound absorption power of the theater chair caused by seating of the human being thereon; and measuring the sound absorption power of the theater chair. There is also provided a dummy sound absorber used for carrying out this method.

REFERENCES:
patent: 4362222 (1982-12-01), Hellstrom
patent: 4739513 (1988-04-01), Kunugi et al.
patent: 5095506 (1992-03-01), Kikuno
The Washington Post, A24, "General Motors Advertisement of a crash Dummy for testing the impact", Sep. 21, 1994.

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