Title :
Source models and rate distortion bounds for speech
Author :
Gibson, Jerry D. ; Ying-Yi Li
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California, Santa Barbara, Santa Barbara, CA, USA
Abstract :
In prior work, we developed new rate distortion bounds for narrowband and wideband speech coding based on composite source models for speech and perceptual PESQ-MOS/WPESQ distortion measures. It was shown that these new rate distortion bounds do in fact lower bound the performance of important standardized speech codecs, including, AMR-NB, and AMR-WB. In this paper, we examine the importance of the source models in more detail, discuss their justification, and present more extensive source modeling results and the corresponding rate distortion bounds.
Keywords :
rate distortion theory; speech codecs; speech coding; AMR-NB; AMR-WB; composite source model; narrowband speech coding; perceptual PESQ-MOS-WPESQ distortion measure; rate distortion bound; speech PESQ-MOS-WPESQ distortion measure; speech codecs; wideband speech coding; composite source models; rate distortion bounds; speech sources;
Conference_Titel :
Signals, Systems and Computers (ASILOMAR), 2012 Conference Record of the Forty Sixth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4673-5050-1
DOI :
10.1109/ACSSC.2012.6488964
