Speech coding method using linear prediction and algebraic code excitation (SPEECH CODING METHOD USING LINEAR PREDICTION AND ALGEBRAIC CODE EXCITATION)

摘要

The method uses the technique of CELP coding with an algebraic codebook. The CELP excursion is a distributed matrix (U = H^TH) includes the calculation of specific components. Where H represents the lower triangular Toeplitz matrix formed based on the impulse response of the synthesis filter consisting of the sum filter and the perceptual weight filter. The memory-storing component of the scattering matrix is simply a function of the expression (U (pos_i.p, pos_i.p)) And the expression (U (pos_i.p, pos_j.q(I) and (j) for the pulses (p and q) in the code of the logarithmic codebook of_i.pAnd pos_j.qto be.