Patent ID: 7689305

Claim:
An audio system comprising: an audio-related device that includes a hierarchical audio node structure indicative of the functionality of the audio-related device, where the hierarchical audio node structure includes components representative of changeable parameters in the audio-related device; and a performance equipment manager configured to communicate with the audio-related device and provide a user interface to monitor and control the changeable parameters of the audio-related device based on the hierarchal node structure; where the performance equipment manager is further configured to generate and transmit a subscribe message to the audio related device, the subscribe message comprising specification of one or more of the changeable parameters and a request to receive a value of the specified one or more changeable parameters upon a change in the value; and where the audio related device is configured to subscribe the performance equipment manager to only the one or more of the changeable parameters in the audio-related device included in the subscribe message so that when the value of any one of the one or more of the changeable parameters changes, the audio-related device is further configured to provide the changed value for receipt by the performance equipment manager.