Title :
Pulse-by-pulse reoptimization of the synthesis filter in pulse-based coders
Author :
Hacioglu, Kadri ; Hasib, Allam
Author_Institution :
Dept. of Electr. & Electron. Eng., Eastern Mediterranean Univ., Mersin, Turkey
fDate :
3/1/1998 12:00:00 AM
Abstract :
Two iterative algorithms for pulse-based linear predictive (PB-LP) analysis are developed. At the kth step, one of the algorithms assumes that the pulse locations of k pulses are known and calculates the LP coefficients jointly with k pulse amplitudes. In contrast, the other algorithm assumes that the previous k-1 pulse amplitudes are known and jointly estimates the LP filter coefficients and the kth pulse amplitude. These algorithms are proposed for synthesis filter reoptimization in pulse-based LP coders, and their effectiveness in multipulse coding is demonstrated through several simulations
Keywords :
filtering theory; iterative methods; linear predictive coding; optimisation; speech coding; speech synthesis; LP coefficients; LP filter coefficients; iterative algorithms; multipulse coding; pulse amplitudes; pulse locations; pulse-based LP coders; pulse-based linear predictive analysis; pulse-by-pulse reoptimization; simulations; speech synthesis; synthesis filter reoptimization; Algorithm design and analysis; Amplitude estimation; Autocorrelation; Equations; Iterative algorithms; Nonlinear filters; Performance analysis; Speech analysis; Speech coding; Speech synthesis;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
