Title :
On the effectiveness of parameter reoptimization in multipulse based coders
Author :
Fratti, M. ; Mian, G.A. ; Riccardi, G.
Author_Institution :
Teletra-Alcatel, Milan, Italy
Abstract :
An algorithm for LPC (linear predictive coding) parameter optimization in multipulse (MP)-LPC based speech coders is presented. It is shown that, by taking into account the nature of the MP-excitation signal into LPC parameter computation, it is possible to improve the effectiveness of the LPC model. This results in a better quality of the reconstructed signal in terms both of objective and subjective criteria. The implementation details of the algorithm are discussed and experimental results are presented. In particular a comparison with standard MP-LPC techniques is given
Keywords :
linear predictive coding; parameter estimation; speech coding; LPC model; MP-LPC techniques; linear predictive coding; multipulse based coders; objective criteria; parameter optimization; parameter reoptimization; speech coders; speech coding; subjective criteria; Bit rate; Filters; High performance computing; Linear predictive coding; Multiple signal classification; Optimization methods; Signal processing; Signal reconstruction; Signal synthesis; Speech coding;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.225969
