Multiple Description Coding of an Audio Stream by Optimum Recovery Transform

A. Ito, S. Makino
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引用次数: 1

Abstract

In this paper, we discuss the mathematical fundamentals of splitting one audio stream into two equal-quality streams. From a trivial consideration, it is found that the sum of errors of two recovered signals is equal to the power of the original signal if the orthogonal recovery is carried out. Next, we describe the optimum recovery transform. This method utilizes the covariance matrix of the signal. We carried out some experiments to recover a signal from one of the split signals. From the results of four kinds of split methods used, the correlating transform of the spectrum gave the best performance.
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基于最优恢复变换的音频流多描述编码
在本文中,我们讨论了将一个音频流分割成两个同等质量的流的数学基础。从一个微不足道的考虑出发,发现如果进行正交恢复,两个恢复信号的误差和等于原始信号的功率。其次,我们描述了最优恢复变换。该方法利用信号的协方差矩阵。我们进行了一些实验,从其中一个分裂信号中恢复一个信号。从四种分割方法的结果来看,光谱的相关变换效果最好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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