Title :
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
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;
Conference_Titel :
Speech Coding, 2000. Proceedings. 2000 IEEE Workshop on
Conference_Location :
Delavan, WI
Print_ISBN :
0-7803-6416-3
DOI :
10.1109/SCFT.2000.878433
