Digital Audio Distribution (DAD) SubcommitteeLast Update: December 12, 2007 Chairman: Open Goal: Standardize audio interfaces in a digital format to enable all the elements of the audio communication system to evolve independently. The use of digital audio standard transmission on aircraft would allow the improvement of the transmission quality through the evolution of intrinsic characteristics, e.g., signal-to-noise ratio, cross talk, interference susceptibility, etc. Scope: The project will develop a digital audio interface standard applicable to sensing, processing, distributing, interpreting and recording digital audio communication for flight deck audio and cabin service audio applications. The digital audio format will be compatible with the Flight Data Recorder. Benefit: A digital audio standard is expected to provide flexibility in avionic system architecture. It will reduce the need for dedicated wiring, minimize system cost and maintenance costs, by providing a limited number of standard audio interfaces adapted to avionics needs. It will improve maintainability of audio equipment and reduce the need for unique test equipment. It would allow also deal with analog component obsolescence. AEEC General Session (October 2006) Update: The need for a digital audio distribution standard is widely recognized. Airbus and Boeing reported at the present time, October 2006, they have no airplane program in mind that would use a digital audio standard. Drivers for digital audio will be discussed within the SAI Subcommittee. Current Drafts:
Working Papers: Next Meeting Announcement: Last Meeting Report:
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