Invention Grant
US08265302B2 Method and apparatus for providing volume control with DC supervision 有权
用于通过直流监控提供音量控制的方法和装置

Method and apparatus for providing volume control with DC supervision
Abstract:
A method and apparatus for providing a volume control with DC supervision in a voice evacuation system are disclosed. In one embodiment, the apparatus is a volume control comprising a first input interface for receiving an audio signal, a first output interface for forwarding said audio signal to at least one audio device, and a second input interface for receiving an alarm signal. The apparatus also comprises a switch having a plurality of nodes, wherein at least one of the plurality of nodes is an unlabeled node, wherein the switch is in communication with the first input interface and the first output interface for controlling a volume of the audio signal that is sent to the at least one audio device. The apparatus also comprises a filter that is coupled to the unlabeled node of the switch.
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