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Wireless High Definition Multichannel Streaming Audio Network Technology Based on the IEEE 802.11 Standards

A novel approach for the wireless distribution of uncompressed real-time multichannel streaming audio is presented. The technology is based on the IEEE 802.11 Point Coordination Function Contention Free medium access with optimized multicast frames. The implementation supports eight independent audio streams with simultaneous 24-bit audio samples at the rate of 192 kHz. Frame length alignment algorithm is developed for smooth, low jitter flow. An audio specific Forward Error Correction scheme and a low system latency inter-channel synchronization method are described. The clock drift is solved by a sample stuffing/stripping algorithm. Implemented hardware and software structures are presented and the technology is compared with other wireless audio networking concepts. Emerging multichannel program material formats are briefly reviewed.

Authors: Nikkilä, Seppo; Lindeman, Tom; Manea, Valentin
Affiliation: ANT - Advanced Network Technologies Oy, Helsinki, Finland
AES Convention:130 (May 2011) Paper Number:8399 Import into BibTeX
Subject:Posters: Production and Broadcast

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