Parametric speech coding-HVXC at 2.0-4.0 kbps

Author

Nishiguchi, Masayuki ; Inoue, Akira ; Maeda, Yuji ; Matsumoto, Jun

Author_Institution

Media Process. Labs., Sony Corp., Tokyo, Japan

fYear

1999

fDate

1999

Firstpage

84

Lastpage

86

Abstract

MPEG-4 parametric speech coding, harmonic vector excitation coding (HVXC) algorithm, is described. New features of the coder includes a quantizer scheme capable of generating 2.0 and 4.0 kbps scalable bit-streams, where 2.0 kbps decoding is possible using a subset of 4.0 kbps bit-stream. Time scale modification of speech is also possible without changing pitch nor phoneme for fast and slow playback mode. Listening tests show that the proposed coding method at 2.0 kbps provides significantly better quality than that of FS1016 CELP at 4.8 kbps. In October 1998, the HVXC coder was adopted to the Final Draft International Standard (FDIS) of MPEG-4 standardization

Keywords

code standards; linear predictive coding; speech coding; standardisation; vector quantisation; 2 kbit/s; 4 kbit/s; CELP; Final Draft International Standard; HVXC algorithm; MPEG-4 standardization; decoding; harmonic vector excitation coding; listening tests; parametric speech coding; quantizer scheme; scalable bit-streams; time scale modification; Bit rate; Code standards; Decoding; Frequency estimation; Linear predictive coding; MPEG 4 Standard; Power harmonic filters; Speech analysis; Speech coding; Vector quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Speech Coding Proceedings, 1999 IEEE Workshop on

Conference_Location

Porvoo

Print_ISBN

0-7803-5651-9

Type

conf

DOI

10.1109/SCFT.1999.781492

Filename

781492