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

Volume

3

fYear

2000

fDate

2000

Firstpage

1363

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on

Conference_Location

Istanbul

ISSN

1520-6149

Print_ISBN

0-7803-6293-4

Type

conf

DOI

10.1109/ICASSP.2000.861832

Filename

861832