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Modular Acoustical Panels With Masking Noise System

IP.com Disclosure Number: IPCOM000060114D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08

Publishing Venue

IBM

Related People

Authors:
Lang, WW Nobile, MA [+details]

Abstract

In some offices, a masking noise is intentionally introduced that is not directly noticeable by the occupants in the office but prevents them from overhearing conversations in nearby offices. The noise is random in the frequency range 200 Hz to 5 kHz and has a "rushing" sound similar to that heard on an FM radio when not tuned to a station. Commonly, the masking noise system comprises an array of loudspeakers, amplifiers, and other control devices located above the ceiling of the office area. In this system, the office partitions are formed of modular, structural panels, as is conventional, and the loudspeakers are located in the panels themselves. A standard panel carries small speakers that are arranged to provide equal horizontal and vertical sound coverage in front of the panel.