Hybrid amplitude-phase grating diffusers

Acoustics – Sound-modifying means – Sound absorbing panels

Reexamination Certificate

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Details

C181S292000

Reexamination Certificate

active

11201067

ABSTRACT:
A room acoustic diffuser exploits interference, by reflecting waves out-of-phase with the specular energy, making it possible to diminish specular energy. This is achieved by using a diffuser based on a ternary sequence, which nominally has reflection coefficients of 0, −1 and +1. A method for obtaining the design sequence for Quaternary diffusers is also disclosed. Also, design methods for forming the sequences into arrays, and forming hemispherical diffusers are explained.

REFERENCES:
patent: 2840179 (1958-06-01), Junger
patent: 2989136 (1961-06-01), Wohlberg
patent: 3035657 (1962-05-01), Lemon
patent: 4566557 (1986-01-01), Lemaitre
patent: 4821839 (1989-04-01), D'Antonio et al.
patent: 4964486 (1990-10-01), D'Antonio et al.
patent: 5027920 (1991-07-01), D'Antonio et al.
patent: 5160816 (1992-11-01), Chlop
patent: 5168129 (1992-12-01), D'Antonio
patent: 5193318 (1993-03-01), D'Antonio
patent: 5226267 (1993-07-01), D'Antonio
patent: 5401921 (1995-03-01), D'Antonio et al.
patent: 5512715 (1996-04-01), Takewa et al.
patent: 5817992 (1998-10-01), D'Antonio
patent: 6112852 (2000-09-01), D'Antonio et al.
patent: 6491134 (2002-12-01), Ryan et al.
patent: 6772859 (2004-08-01), D'Antonio et al.
patent: 7308965 (2007-12-01), Sapoval et al.
patent: 7314114 (2008-01-01), Gardner et al.
patent: 7322441 (2008-01-01), D'Antonio et al.
patent: 2005/0167193 (2005-08-01), Van Reeth
patent: 02131296 (1990-05-01), None

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