Mixed-domain coding of speech at 3 kb/s

Author

De Martin, Juan Carlos ; Gersho, Allen

Author_Institution

Dipartimento di Elettronica, Politecnico di Torino, Italy

Volume

1

fYear

1996

fDate

7-10 May 1996

Firstpage

216

Abstract

We present a speech coding algorithm called mixed-domain residual coding (MDRC) wherein a prototype pitch cycle in each frame of the speech residual is coded in the time-domain while interpolation of the residual signal is performed in the frequency-domain. A novel quantization scheme takes into account time scaling and differentially codes successive prototypes with a closed-loop perceptually-weighted search. A fixed-rate (3.15 kb/s) implementation of MDRC achieves quality better or comparable to higher rate coders such as FS 1016 CELP and IMBE

Keywords

frequency-domain analysis; interpolation; quantisation (signal); speech coding; time-domain analysis; 3.15 kbit/s; MDRC; closed-loop perceptually-weighted search; fixed-rate implementation; frequency-domain; interpolation; low bit rate; mixed-domain residual coding; prototype pitch cycle; quantization scheme; residual signal; speech coding algorithm; speech quality; time scaling; time-domain; Decoding; Design engineering; Digital signal processing; Instruments; Interpolation; Power harmonic filters; Prototypes; Quantization; Speech coding; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on

Conference_Location

Atlanta, GA

ISSN

1520-6149

Print_ISBN

0-7803-3192-3

Type

conf

DOI

10.1109/ICASSP.1996.540329

Filename

540329