Title :
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
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;
Conference_Titel :
Speech Coding Proceedings, 1999 IEEE Workshop on
Conference_Location :
Porvoo
Print_ISBN :
0-7803-5651-9
DOI :
10.1109/SCFT.1999.781492
