Acoustical diffusing and absorbing cinder blocks

Details Acoustical diffusing and absorbing cinder blocks Acoustical diffusing and absorbing cinder blocks

1991-10-23

1993-03-16

Scherbel, David A.

Static structures (e.g., buildings)

With exposed configuration having acoustical function

52606, 181285, E04B 182

Patent

active

051933187

ABSTRACT:
Disclosed are embodiments of structural acoustical cinder blocks including blocks which are intended to be assembled together through the use of mortar to provide a diffusor of desired shape and configuration. Each diffusor includes a plurality of wells, the depths of which are determined through the use of number theory sequences, such as, for example, the quadratic-residue sequence developed by Karl Frederick Gauss. The surface irregularities formed in the blocks are unique in that they provide a flat power spectrum and constant scattered energy in the diffraction directions. Each of the blocks also includes a low frequency sound absorbing chamber. As the blocks are installed, a structural stacked bond is formed on both the diffusor face and the rear structural face. If desired, a single block may be made which includes an entire sequence of wells and dividers.

REFERENCES:
patent: 4821838 (1989-04-01), Chen
patent: 4964486 (1990-10-01), D'Antonio
patent: 5027920 (1991-07-01), D'Antonio

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