Patent ID: 9307333
Filing Date: 2016-04-05
CPC Classification: G10K,H04K,H04M,H04R,H05K

Claim Text:
1. A sound masking system for controlling an ambient noise level in a physical environment, said sound masking system comprising: (a) a communication network spanning at least a portion of said physical environment; (b) a plurality of sound masking units, some of said sound masking units including a sound masking component for generating a sound masking output signal, at least one digital component, and a communication interface for coupling said sound making units to said communication network for receiving control signals over said communication network; (c) a control unit, said control unit having a communication interface for coupling said control unit to said communication network for transmitting control signals over said communication network to said sound masking units, and said control signals including signals for selectively controlling the operation of said sound masking units; (d) wherein said sound masking component comprises a random noise generating component for generating an incoherent signal output, a filter component for receiving the incoherent signal output and generating an incoherent signal output with a predetermined contour, and an output amplifier for amplifying said contour incoherent signal output, and said digital component comprising a digital potentiometer coupled to said filter component for altering the contour of said incoherent signal output in response to a control signal from said programmable controller.