void ZeroPoleFilter(
float *In, /* (i) In[0] to In[lengthInOut-1] contain
filter input samples In[-orderCoef] to
In[-1] contain state of all-zero
section */
float *ZeroCoef,/* (i) filter coefficients for all-zero
section (ZeroCoef[0] is assumed to
be 1.0) */
float *PoleCoef,/* (i) filter coefficients for all-pole section
(ZeroCoef[0] is assumed to be 1.0) */
int lengthInOut,/* (i) number of input/output samples */
int orderCoef, /* (i) number of filter coefficients */
float *Out /* (i/o) on entrance Out[-orderCoef] to Out[-1]
contain state of all-pole section. On
exit Out[0] to Out[lengthInOut-1]
contain filtered samples */
){
AllZeroFilter(In,ZeroCoef,lengthInOut,orderCoef,Out);
AllPoleFilter(Out,PoleCoef,lengthInOut,orderCoef);
}
/*********************
*
* FUNCTION: IIRFilter
*
* DESCRIPTION: IIR filtering of a singal
*
*
***********************/
void IIRFilter(IIRFILTER_HANDLE hIIRFilter,
FLOAT x[],
FLOAT y[],
INT32 iNrSamples
)
{
AllZeroFilter(hIIRFilter->hAlZeroFilter,x,y,iNrSamples);
AllPoleFilter(hIIRFilter->hAlPoleFilter,y,y,iNrSamples);
}