lpc_ana.m

the implement of the encoder and the decoder of the CELP

function lpc_coef=lpc_ana(curr,gamma2,fm_count)

global frames olpc lpcMat

hfrm=curr.*hamming(frames)';                            % Hamming windowed frames 

lpc_coef = lpc(hfrm,olpc);                              % Call Matlab command 'lpc' to get LPC coefficients

lpc_coef = wcoff( gamma2, real(lpc_coef) );             % Weight the resultant LPC coefficients with 0.99413

lpcMat(fm_count,:)=lpc_coef;                            % Store LPC coefficients