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