Frequency diffuser

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Description

FIG. 1 is a front perspective view of a frequency diffuser showing our new design.

FIG. 2 is a back perspective view thereof.

FIG. 3 is a top view thereof.

FIG. 4 is a front view thereof.

FIG. 5 is a side view thereof; and,

FIG. 6 is a back view thereof.

The design is for a Quadratic Residue Diffuser (QRD) acoustic diffuser which is used to control reflection of sound in a listening environment.

Claims

The ornamental design for a frequency diffuser, as shown and described.

Referenced Cited
U.S. Patent Documents
D208983 October 1967 Winston
D317909 July 2, 1991 Fujioka
D403301 December 29, 1998 Lehmann
D443842 June 19, 2001 Kuwabara
D471172 March 4, 2003 Greenway
Patent History
Patent number: D753074
Type: Grant
Filed: Apr 21, 2014
Date of Patent: Apr 5, 2016
Inventors: Dennis Kliegle (Holcombe, WI), Gary Gotlieb Unterschuetz (Ladysmith, WI), David C. Weber (Springbrook, WI)
Primary Examiner: Derrick Holland
Application Number: 29/488,510
Classifications
Current U.S. Class: Miscellaneous (D13/199)