Personal sound masking system

Details Personal sound masking system Personal sound masking system

2005-05-03

2005-05-03

Ramakrishnaiah, Melur (Department: 2644)

Electrical audio signal processing systems and devices

Sound or noise masking

C381S094300

Reexamination Certificate

active

06888945

ABSTRACT:
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 them to a successive loudspeaker module on output connections. The connections on which the masking sound signals appear in each loudspeaker are shifted by the inter-loudspeaker connections, such that successive loudspeakers automatically emit different masking sound signals for improved diffuseness in the overall masking sound in the work area. Each loudspeaker module has one jack having the input connections and another jack having the output connections, and each jack receives a detachable cable such as telephone cable to connect adjacent loudspeaker modules. The masking sound signals are shifted by a cross connection network between the two jacks in each loudspeaker module.

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