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31 #define LPC_MAX_ORDER 20
34 void autocorrelate(
float Sn[],
float Rn[],
int Nsam,
int order);
37 void inverse_filter(
float Sn[],
float a[],
int Nsam,
float res[],
int order);
38 void synthesis_filter(
float res[],
float a[],
int Nsam,
int order,
float Sn_[]);
39 void find_aks(
float Sn[],
float a[],
int Nsam,
int order,
float *E);
40 void weight(
float ak[],
float gamma,
int order,
float akw[]);