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1. 发明授权

US06182031B2 Scalable audio coding system 有权
标题翻译：可扩展音频编码系统
公开(公告)号：US06182031B2
公开(公告)日：2001-01-30
申请号：US09153347
申请日：1998-09-15
申请人： Jeffrey N. Kidder , Russell Henning , Michael E. Deisher
发明人： Jeffrey N. Kidder , Russell Henning , Michael E. Deisher
IPC分类号： G10L1902
CPC分类号： G10L19/0208
摘要： An audio coding system encodes and decodes audio signals as a plurality of independent layers of coded audio data. A basic representation of the original audio signal may be reconstructed from decoding of a single layer of coded audio data. However, a more complete representation of the original audio signal is reconstructed by decoding additional layers of coded audio data. The coding system finds application with decoding systems of varying processing power, and in transmission systems having communication channels that are characterized by intermittent transmission errors and/or variable capacity. At an encoding system, an audio signal is broken into a plurality of frequency bands which are filtered, down sampled and independently coded. A decoding system inverts the coding process applied at the encoding system for whatever number of layers that is determined will be decoded.
摘要翻译：音频编码系统将音频信号编码和解码为多个编码音频数据的独立层。原始音频信号的基本表示可以从单层编码音频数据的解码来重构。然而，通过解码附加层的编码音频数据来重构原始音频信号的更完整的表示。编码系统利用具有不同处理能力的解码系统，以及具有以间歇传输错误和/或可变容量为特征的通信信道的传输系统。在编码系统中，音频信号被分解成多个频带，这些频带被滤波，下采样和独立编码。解码系统使编码系统中应用的编码处理反转所确定的任何数量的层将被解码。

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