Title :
A hybrid multiband excitation coder for low bit rates
Author :
Hassanein, Hisham ; Brind´Amour, André ; Bryden, Karen
Author_Institution :
Commun. Res. Centre, Ottawa, Ont., Canada
Abstract :
Multiband excitation coders (MBE) are capable of generating good quality speech at 4800 bps under both quiet and noisy conditions. A frequency selective MBE (FSMBE) technique combining MBE with a dynamic frequency band extraction algorithm is proposed. The aim is to reduce the bit rate down to 2400 bps without significantly degrading the speech quality
Keywords :
speech coding; vocoders; 4800 bit/s; bit rate reduction; dynamic frequency band extraction algorithm; frequency selective MBE; hybrid multiband excitation coder; low bit rates; noisy conditions; quiet conditions; speech coding; speech quality; vocoders; Background noise; Bit rate; Bridges; Cyclic redundancy check; Degradation; Discrete Fourier transforms; Frequency; Linear predictive coding; Noise generators; Speech synthesis;
Conference_Titel :
Wireless Communications, 1992. Conference Proceedings., 1992 IEEE International Conference on Selected Topics in
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-0723-2
DOI :
10.1109/ICWC.1992.200743
