Approach for controlling audio signals in remote location
First Claim
1. An arrangement for use in a facility with a plurality of audio zones receiving at least one audio signal from a remotely-located audio distribution controller—
- and for controlling audio at a user-controlled speaker load located in at least one of the audio zones, the arrangement comprising;
an isolation circuit for generating at least one transformed audio signal in response to receiving said at least one audio signal, the isolation circuit including an impedance-matching circuit that provides impedance-matched termination for said at least one audio signal, the impedance-matched termination adapted to provide a selection between a number of settings each setting for the impedance-matching circuit having a different maximum limit on an amount of electrical power to the speaker load and a volume control limited by a maximum limit corresponding to a currently-selected setting for the impedance-matched termination;
a speaker load circuit for delivering, in response to said at least one transformed audio signal, audible signals in the at least one of the audio zones;
a user-input device coupled to provide input commands; and
an audio control unit located in said at least one of the audio zones and remote from the audio distribution controller, the audio control unit having a microprocessor adapted to control the delivery of the audible signals in response to the input commands.
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0 Petitions
Accused Products
Abstract
An example embodiment is directed to use in a facility benefiting from the distribution of audio throughout different facility zones (“audio zones”), with each audio zone receiving an audio signal from a remotely-located audio distribution controller. For controlling audio at a user-controlled speaker load located in one of the audio zones, a circuit arrangement includes isolation circuit, speaker load circuit, user-input device and an audio control unit. The isolation circuit generates a transformed audio signal by provide an impedance-matched termination and by permitting one of a number of impedance-matching circuits to be set wherein each impedance-matching circuit provides a different amount of electrical power to the speaker load. The speaker load circuit delivers, in response to the transformed audio signal, audible signals in the audio zone. The audio control unit has a microprocessor adapted to control the delivery of the audible signals in response to the input commands generated via the user-input device.
28 Citations
20 Claims
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1. An arrangement for use in a facility with a plurality of audio zones receiving at least one audio signal from a remotely-located audio distribution controller—
- and for controlling audio at a user-controlled speaker load located in at least one of the audio zones, the arrangement comprising;
an isolation circuit for generating at least one transformed audio signal in response to receiving said at least one audio signal, the isolation circuit including an impedance-matching circuit that provides impedance-matched termination for said at least one audio signal, the impedance-matched termination adapted to provide a selection between a number of settings each setting for the impedance-matching circuit having a different maximum limit on an amount of electrical power to the speaker load and a volume control limited by a maximum limit corresponding to a currently-selected setting for the impedance-matched termination; a speaker load circuit for delivering, in response to said at least one transformed audio signal, audible signals in the at least one of the audio zones; a user-input device coupled to provide input commands; and an audio control unit located in said at least one of the audio zones and remote from the audio distribution controller, the audio control unit having a microprocessor adapted to control the delivery of the audible signals in response to the input commands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- and for controlling audio at a user-controlled speaker load located in at least one of the audio zones, the arrangement comprising;
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20. For use in a facility with a plurality of audio zones receiving at least one audio signal from a remotely-located audio distribution controller, an arrangement for controlling audio at a user-controlled speaker load located in at least one of the audio zones, comprising:
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means for generating at least one transformed audio signal in response to receiving said at least one audio signal, for providing an impedance-matched termination for said at least one audio signal, and for setting one of a number of impedance-matching circuits wherein each impedance-matching circuit is adapted to provide a different amount of electrical power to the speaker load; a speaker load circuit for delivering, in response to said at least one transformed audio signal, audible signals in the at least one of the audio zones; user-input means for providing input commands; and an audio control unit located in said at least one of the audio zones and remote from the audio distribution controller, the audio control unit having a microprocessor adapted to control the delivery of the audible signals in response to the input commands.
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Specification