Wideband coding of speech using a scalable pulse codebook

Author

Ashley, James P. ; Cruz-Zeno, Edgardo M. ; Mittal, Udar ; Peng, Weimin

Author_Institution

Labs., Motorola Inc., Schaumburg, IL, USA

fYear

2000

fDate

2000

Firstpage

148

Lastpage

150

Abstract

Recent standardization efforts have provided motivation for research in the area of wideband speech coding (50 Hz to 7 kHz). Both the European Telecommunications Standards Institute (ETSI) in conjunction with the Third Generation Partnership Project (3GPP), and the ITU-T are currently in the process of evaluating candidate algorithms at bit rates from around 12 kbps to 32 kbps. This paper describes a code-excited linear prediction (CELP) technique used in the Motorola candidate algorithm that is scalable to a wide range of bit rates, thereby allowing the use of a ubiquitous speech model. Preliminary subjective test results indicate that the technique provides very high quality speech that meets or exceeds all requirements for both the ETSI/3GPP and ITU-T wideband speech standardization efforts

Keywords

code standards; linear predictive coding; speech coding; standardisation; telecommunication standards; 12 to 32 kbit/s; 3GPP; 50 Hz to 7 kHz; ACELP; ETSI; European Telecommunications Standards Institute; ITU-T; Motorola candidate algorithm; Third Generation Partnership Project; algebraic CELP; algebraic code-excited linear prediction; high quality speech; scalable pulse codebook; standardization; subjective test results; wideband speech coding; Bit rate; Interleaved codes; Modems; Predictive models; Pulse shaping methods; Speech coding; Standardization; Telecommunication standards; Testing; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Speech Coding, 2000. Proceedings. 2000 IEEE Workshop on

Conference_Location

Delavan, WI

Print_ISBN

0-7803-6416-3

Type

conf

DOI

10.1109/SCFT.2000.878433

Filename

878433