Two-dimensional primitive root diffusor

Details Two-dimensional primitive root diffusor Two-dimensional primitive root diffusor

1993-09-13

1995-03-28

Gellner, Michael L.

Acoustics

Sound-modifying means

Sound absorbing panels

181288, 181295, 181296, E04B 182

Patent

active

054019214

ABSTRACT:
A two-dimensional primitive root diffusor includes a two-dimensional pattern of wells, the depths of which are determined through operation of primitive root sequence theory. A prime number N is chosen such that N-1 has two coprime factors which are non-divisible into each other. From the prime number, a primitive root is determined and, in the preferred embodiment, an algorithm is used to determine sequence values for each well. Each sequence value is proportional to the well depth, with each sequence value being multiplied by the design wavelength and then divided by 2N to arrive at the actual well depth value.

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patent: 5027920 (1991-07-01), D'Antonio et al.
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patent: 5168129 (1992-12-01), D'Antonio
patent: 5193318 (1993-03-01), D'Antonio et al.
patent: 5226267 (1993-07-01), D'Antonio et al.

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