1
Klaus R Moeller, Niklas Moeller, Mircea Rusu, Carl Derla: Networked sound masking system. 777388 Ontario, HArness Dickey & Pierce, July 2, 2013: US08477958 (57 worldwide citation)

A sound masking system for shaping the ambient noise level in a physical environment. The sound masking system comprises a networked and distributed system having a number of master units coupled together and to a control unit. One or more of the master units may include satellite sound masking unit ...


2
Richard O Thomalla: Automatic volume and frequency controlled sound masking system. Conwed Corporation, Eyre Mann Lucas & Just, March 20, 1984: US04438526 (34 worldwide citation)

A sound masking system for generating background sound. The background sound is automatically adjusted to ambient noise levels by adjusting the amplitude of the frequency levels detected.


3
Andrew J Kurrasch, Robert L Beck, Daniel Robert Kuiper, Arturo J Bonomie: Office components, seating structures, methods of using seating structures, and systems of seating structures. Herman Miller, Brinks Hofer Gilson & Lione, Gregory H Zayia, January 16, 2007: US07163263 (30 worldwide citation)

Office components are described that include an electrical conduit electrically coupled to a fuel cell, and an electrically powered device coupled to the electrical conduit and configured to receive electricity generated by the fuel cell. The electrically powered device includes at least one of an a ...


4
William R Torn: Sound masking system for open plan office. DuKane Corporation, Robert L Kahn, October 12, 1976: US03985957 (27 worldwide citation)

This invention relates to a system for masking conversation in an open plan office. A conventional generator of electrical random noise currents feeds its output through adjustable electric filter means to speaker clusters in a plenum above the office space. Each cluster has two speakers in a trigon ...


5
Andrew J Kurrasch, Robert L Beck, Daniel Robert Kuiper, Arturo J Bonomie: Office components, seating structures, methods of using seating structures, and systems of seating structures. Herman Miller, Brinks Hofer Gilson & Lione, Gregory H Zayia, July 1, 2008: US07393053 (24 worldwide citation)

Office components are described that include an electrical conduit electrically coupled to a fuel cell, and an electrically powered device coupled to the electrical conduit and configured to receive electricity generated by the fuel cell. The electrically powered device includes at least one of an a ...


6
Thomas R Horrall: Personal sound masking system. Acentech, Weingarten Schurgin Gagnebin & Hayes, February 13, 2001: US06188771 (24 worldwide citation)

A personal sound masking system for use in an individual workspace provides an optimized acoustic background environment by delivering a sound masking signal that is specifically matched to the individual user's location and physical relationship to other nearby offices. The sound masking syste ...


7
Thomas R Horrall, John C Heine: Sound masking system. Acentech, Weingarten Schurgin Gagnebin & Lebovici, March 20, 2007: US07194094 (18 worldwide citation)

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 a ...


8
Hans W Krause: Masking sound device. 777388 Ontario, Ridout & Maybee, April 3, 1990: US04914706 (16 worldwide citation)

A masking sound source for a sound masking system has adjustable preset means for adjusting the spectral shape of the sound produced. The source includes a random noise generator for producing white noise and having two incoherent outputs in which two low pass filters having different frequency resp ...


9
Thomas R Horrall: Personal sound masking system. Acentech, Weingarten Schurgin Gagnebin & Lebovici, May 3, 2005: US06888945 (15 worldwide citation)

A sound masking system for a multi-occupant work area includes a masking signal generator generating incoherent masking sound signals loudspeaker modules interconnected in a daisy-chain fashion, with each loudspeaker module receiving the masking sound signals on input connections and transmitting th ...


10
Philip H Nelson: Sound-masking system for core modules used in an office. Ralph R Roberts, Patrick J Pinto, August 9, 1988: US04761921 (14 worldwide citation)

An acoustic sound-masking system carried in a core module provides conversational privacy for workers in an open-plan office space. The core module is movable to a desired location on the open floor and has at least three substantially like height side-panel portions providing a movable tubular encl ...