Title :
A modified CELP model with computationally efficient adaptive codebook search
Author :
de Silva, L.M. ; Alcaim, Abraham
Author_Institution :
CETUC-PUCA, Rio de Janerio, Brazil
fDate :
3/1/1995 12:00:00 AM
Abstract :
In this letter, we propose a CELP algorithm in which the complexity of the search procedure in the adaptive codebook is greatly reduced. This is achieved by means of a modified model of the CELP synthesizer, while keeping the usual perceptual weighting of the synthesis error in the analysis procedure. Simulation results show that the proposed algorithm can provide speech quality comparable to the one obtained with the conventional CELP codec.<>
Keywords :
adaptive codes; error analysis; linear predictive coding; search problems; speech codecs; speech coding; speech synthesis; analysis procedure; computationally efficient adaptive codebook search; conventional CELP codec; modified CELP model; perceptual weighting; speech quality; synthesis error; Adaptive filters; Computational modeling; Delay; Error analysis; Filtering; Nonlinear filters; Speech analysis; Speech processing; Speech synthesis; Synthesizers;
Journal_Title :
Signal Processing Letters, IEEE
