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Fine Grain Scalability in MPEG-4 Audio

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Previous MPEG-1, MPEG-2 Audio standards provided a single bitrate, single bandwidth tool set, with different configurations of that tool set specified for use in various applications. MPEG-4 provides several bitrate and bandwidth options within a single bitstream, providing a scalability functionality that permits a given bitstream to scale to the requirement of different channels and applications or to be responsive to a given channel that has dynamic throughput characteristics. Many of the tools specified in MPEG-4 are the state-of-the-art tools providing scalable compression of speech and audio signals. In this paper, we present the fine grain scalability tool in MPEG-4 Audio.

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AES - Audio Engineering Society