Title :
Low-delay subband CELP coding for wideband speech
Author :
Tian, W.S. ; Wong, W.C. ; Tsao, C.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
fDate :
10/1/1997 12:00:00 AM
Abstract :
Low-delay techniques are proposed for coding 7 kHz speech using subband code-excited linear predictive coding (CELP). The use of separate and joint index codebooks is compared. Specifically, the joint-index-subband CELP (JISBC) algorithm is found to provide good quality with processing delay in the range 2.375-3.375 ms at corresponding bit rates of 16-8 kbit/s
Keywords :
delays; linear predictive coding; speech codecs; speech coding; 2.375 to 3.375 ms; 7 kHz; 8 to 16 kbit/s; bit rates; code excited linear predictive coding; codecs; joint index codebooks; joint index subband CELP algorithm; low delay subband CELP coding; processing delay; separate codebooks; speech quality; wideband speech;
Journal_Title :
Vision, Image and Signal Processing, IEE Proceedings -
DOI :
10.1049/ip-vis:19971415
