File list (Check if you may need any files):
Chapter_6
.........\P6_1
.........\....\lsp.mat
.........\....\lsptopc.m
.........\....\pcall.mat
.........\....\synLSP_data.mat
.........\....\synthLSP.m
.........\P6_2
.........\....\delay.m
.........\....\excit_param.mat
.........\....\ham.m
.........\....\ldelay.m
.........\....\ld_var.mat
.........\....\lsptopc.m
.........\....\npf.mat
.........\....\pitchsynth.m
.........\....\pitsyn.mat
.........\....\polefilt.m
.........\....\qd.m
.........\....\sinc.m
.........\....\synth_speech.m
.........\P6_3
.........\....\adaptive_postfilt.m
.........\....\bwexp.m
.........\....\pctorc.m
.........\....\polefilt.m
.........\....\postfilt_dat.mat
.........\....\zerofilt.m