Title :
SNR scalability, multiple descriptions and perceptual distortion measures
Author :
Gibson, Jerry D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California, Santa Barbara, CA, USA
Abstract :
SNR scalability and multiple descriptions (MD) coding are two important functionalities for speech coding applications. Previous analyses of these structures have not included frequency weighted error criteria. We present rate distortion theoretic results showing that the weighting functions in the core and enhancement layers for SNR scalable coding and in the side descriptions and the joint description for MD coding are necessarily different. We present simulation results for SNR scalable speech coding and MD speech coding to illustrate the theory.
Keywords :
rate distortion theory; speech coding; SNR scalability; frequency weighted error criteria; multiple descriptions coding; perceptual distortion measures; rate distortion theory; speech coding; Bit rate; Code standards; Decoding; Distortion measurement; Frequency measurement; Rate distortion theory; Rate-distortion; Scalability; Speech coding; Speech enhancement;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Print_ISBN :
0-7803-8622-1
DOI :
10.1109/ACSSC.2004.1399169
