09076430 is referenced by 4 patents and cites 39 patents.

A sound masking system according to the invention is disclosed in which one or more sound masking loudspeaker assemblies are coupled to one or more electronic sound masking signal generators. The loudspeaker assemblies in the system of the invention have a low directivity index and preferably emit an acoustic sound masking signal that has a sound masking spectrum specifically designed to provide superior sound masking in an open plan office. Each of the plurality of loudspeaker assemblies is oriented to provide the acoustic sound masking signal in a direct path into the predetermined area in which masking sound is needed. In addition, the sound masking system of the invention can include a remote control function by which a user can select from a plurality of stored sets of information for providing from a recipient loudspeaker assembly an acoustic sound masking signal having a selected sound masking spectrum.

Title
Sound masking system
Application Number
11/699538
Publication Number
9076430 (B2)
Application Date
January 29, 2007
Publication Date
July 7, 2015
Inventor
John C Heine
Weston
MA, US
Thomas R Horrall
Harvard
MA, US
Agent
Hamilton Brook Smith & Reynolds P C
Assignee
Cambridge Sound Management
MA, US
IPC
H04R 27/00
H04R 3/02
H04R 3/12
H04R 1/02
G10K 11/175
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