An application level video gateway
Proceedings of the third ACM international conference on Multimedia
Loss profiles: a quality of service measure in mobile computing
Wireless Networks
Receiver-driven layered multicast
Conference proceedings on Applications, technologies, architectures, and protocols for computer communications
Vertical handoffs in wireless overlay networks
Mobile Networks and Applications - Special issue: mobile networking in the Internet
Adaptive Management of QoS Requirements for Wireless Multimedia Communications
Information Technology and Management
A Tutorial on MPEG/Audio Compression
IEEE MultiMedia
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The mobile wireless environment, characterized by dynamically varying bandwidth and signal quality, provides a harsh environment for audio and video applications. Insufficient bandwidth leads to losses and delays which significantly reduce the quality of playback at the receiver. Such an environment demands application support for bandwidth adaptation. Audio applications in particular have traditionally operated at fixed rates and are prime candidates for enhancement. We propose a DCT-based audio decomposition (DAD) scheme for real-time general audio streams in the multicast environment which allows audio quality to be traded off against reductions in bandwidth usage. We compare the performance of DAD, using objective and subjective measures, against two other schemes which also support adaptation to restricted bandwidth.