Ultra-fast CELP coding using deterministic multi-codebook innovations

Author

Lin, Daniel

Author_Institution

Hughes Network Systems, Germantown, MD, USA

Volume

1

fYear

1992

fDate

23-26 Mar 1992

Firstpage

317

Abstract

The authors describe improvements to the code excited linear prediction (CELP) excitation model for speech coding at 4 kb/s or less. The innovation signal in the coder is modeled using a multisection codebook of deterministic code sequences. These deterministic code sequences not only improve the subjective voice quality of CELP coder at low bit rates, they also significantly reduce the computational complexity of the coder. These advantages make the coder attractive for application in the newly emerging wireless communication environment

Keywords

linear predictive coding; speech coding; 4 kbit/s; CELP coder; CELP coding; code excited linear prediction; computational complexity; deterministic code sequences; deterministic multicodebook; excitation model; innovation signal; low bit rates; speech coding; subjective voice quality; wireless communication; Bit rate; Code standards; Computational complexity; Error correction; Error correction codes; Power harmonic filters; Sparse matrices; Speech coding; Technological innovation; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on

Conference_Location

San Francisco, CA

ISSN

1520-6149

Print_ISBN

0-7803-0532-9

Type

conf

DOI

10.1109/ICASSP.1992.225908

Filename

225908