filter_mem2(xx, awk1, ak, y, N, ord, mem); for (i=0;i<ord;i++) mem[i]=0; iir_mem2(y, awk2, y, N, ord, mem);
filter_mem2(y, awk1, awk2, y, N, ord, mem);
void syn_percep_zero(float *xx, float *ak, float *awk1, float *awk2, float *y, int N, int ord, char *stack){   int i;   float *mem = PUSH(stack,ord, float);   for (i=0;i<ord;i++)      mem[i]=0;   filter_mem2(xx, awk1, ak, y, N, ord, mem);   for (i=0;i<ord;i++)     mem[i]=0;   iir_mem2(y, awk2, y, N, ord, mem);}