Personal sound masking system
First Claim
1. A sound masking system, comprising:
- a masking signal generator operative to generate a plurality of incoherent masking sound signals, the masking sound signals having spectra tailored to achieve a desired masking sound spectrum when the masking sound signals are emitted by loudspeakers in a multi-occupant workspace; and
a plurality of loudspeaker modules, the loudspeaker modules and masking signal generator being interconnected in a daisy-chain fashion such that the masking sound signals are received by each loudspeaker module on respective input connections and transmitted to an adjacent loudspeaker on respective output connections, each loudspeaker module including a loudspeaker connected to a predetermined one of the input connections, the interconnection between each pair of adjacent loudspeaker modules being operative to shift the input connections on which the respective masking sound signals appear such that successive loudspeakers emit different ones of the masking sound signals.
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Accused Products
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.
22 Citations
19 Claims
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1. A sound masking system, comprising:
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a masking signal generator operative to generate a plurality of incoherent masking sound signals, the masking sound signals having spectra tailored to achieve a desired masking sound spectrum when the masking sound signals are emitted by loudspeakers in a multi-occupant workspace; and
a plurality of loudspeaker modules, the loudspeaker modules and masking signal generator being interconnected in a daisy-chain fashion such that the masking sound signals are received by each loudspeaker module on respective input connections and transmitted to an adjacent loudspeaker on respective output connections, each loudspeaker module including a loudspeaker connected to a predetermined one of the input connections, the interconnection between each pair of adjacent loudspeaker modules being operative to shift the input connections on which the respective masking sound signals appear such that successive loudspeakers emit different ones of the masking sound signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification