Title :
High quality enhanced waveform interpolative coding at 2.8 kbps
Author :
Gottesman, Oded ; Gersho, Allen
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
This paper presents a high quality enhanced waveform interpolative (EWI) speech coder at 2.8 kbps. The system incorporates novel features such as: dual-predictive analysis-by-synthesis (AbS) quantization of the slowly evolving waveform (SEW), efficient parametrization of the rapidly evolving waveform (REW) magnitude, and AbS vector quantization (VQ) of the REW parameter. Subjective tests indicate that its quality exceeds that of G.723.1 at 5.3 kbps, and it is slightly better than that of G.723.1 at 6.3 kbps
Keywords :
interpolation; parameter estimation; prediction theory; speech coding; vector quantisation; waveform analysis; 2.8 kbit/s; VQ; WI coding; dual-predictive analysis-by-synthesis quantization; high quality enhanced waveform interpolative coding; rapidly evolving waveform; slowly evolving waveform; speech coder; speech coding; subjective tests; vector quantization; waveform interpolation coding; Bit rate; Electronic mail; Laboratories; Low earth orbit satellites; Parameter estimation; Speech coding; Speech enhancement; Speech synthesis; Testing; Vector quantization;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
Conference_Location :
Istanbul
Print_ISBN :
0-7803-6293-4
DOI :
10.1109/ICASSP.2000.861832
