Title :
Low-delay subband CELP coding for wideband speech
Author :
Tian, W. ; Wong, W.C. ; Tsao, C.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
In this paper we propose low-delay techniques for coding 7 kHz speech using subband coding together with code-excited linear predictive coding (CELP). We compare the use of separate as well as joint index codebooks. Specifically, the joint index subband CELP (JISBC) algorithm is found to provide good quality with processing delay in the range of 2.375 ms to 3.375 ms at corresponding bitrates of 16 kbit/s to 8 kbits/s
Keywords :
linear predictive coding; speech codecs; speech coding; 2.375 to 3.375 ms; 7 kHz; 8 to 16 kbit/s; CELP; JISBC algorithm; code-excited linear predictive coding; joint index subband CELP algorithm; low-delay techniques; speech coding; subband coding; wideband speech; Bit rate; Codecs; Delay; Internet telephony; Linear predictive coding; Shape; Speech coding; Stochastic processes; Teleconferencing; Wideband;
Conference_Titel :
TENCON '96. Proceedings., 1996 IEEE TENCON. Digital Signal Processing Applications
Conference_Location :
Perth, WA
Print_ISBN :
0-7803-3679-8
DOI :
10.1109/TENCON.1996.608783
