کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10338152 693443 2005 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adaptive coding schemes for support of multicast audio to wireless devices
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Adaptive coding schemes for support of multicast audio to wireless devices
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Communications - Volume 28, Issue 2, 10 February 2005, Pages 125-135
نویسندگان
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