Title :
Multiple Description Coding of an Audio Stream by Optimum Recovery Transform
Author :
Ito, Akinori ; Makino, Shozo
Author_Institution :
Tohoku University, Japan
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.
Keywords :
Audio coding; Bandwidth; Bit rate; Communication channels; Communication system control; Covariance matrix; Indium tin oxide; Noise reduction; Power engineering and energy; Streaming media;
Conference_Titel :
Intelligent Information Hiding and Multimedia Signal Processing, 2006. IIH-MSP '06. International Conference on
Conference_Location :
Pasadena, CA, USA
Print_ISBN :
0-7695-2745-0
DOI :
10.1109/IIH-MSP.2006.265110