Computes the frequency-domain adaptive filter output
IppStatus ippsFIRSubband_EC_32fc(Ipp32fc** ppSrcSignalIn, Ipp32fc** ppSrcCoefs, Ipp32fc* pDstSignalOut, int numSegments, int len);
IppStatus ippsFIRSubband_EC_32sc_Sfs(Ipp32sc** ppSrcSignalIn, Ipp32sc** ppSrcCoefs, Ipp32sc* pDstSignalOut, int numSegments, int len, int scaleFactor);
IppStatus ippsFIRSubbandLow_EC_32sc_Sfs(const Ipp32sc** ppSrcSignal, const Ipp32sc** ppCoefs, int numSegments, Ipp32sc* pDstSignal, int startSubband, int numSubbands, int scaleFactor);
ppSrcSignalIn, ppSrcSignal |
Pointer to the two-dimensional vector of size [numSegments]*[ len] containing the pointers to the most recent complex-valued FFT spectra in input audio signal. |
ppSrcCoefs, ppCoefs |
Pointer to the two-dimensional vector of size [numSegments]*[ len] containing the pointers to the filter coefficients vector of size [len]. |
pDstSignalOut, pDstSignal |
Pointer to the complex-valued filter output vector. |
numSegments |
Number of filter segments (0 < numSegments < 256). |
len, numSubbands |
Number of filter subbands (0 < len, numSubbands < 4097). |
startSubband |
Number of subbands to skip before filtering (0£ startSubband < numSubbands). |
scaleFactor |
Saturation fixed scale factor (-32 < scaleFactor < 32), for ippsFIRSubbandLow_EC_32sc_Sfs function (0 ≤ scaleFactor < 32). |
The functions ippsFIRSubband_EC and ippsFIRSubbandLow_EC are declared in the ippsc.h file.These functions perform FIR filtering of the input two-dimensional spectra vector.
The ippsFIRSubbandLow_EC_32sc_Sfs function performs filtering without 64-bit integer overflow check. For startSubband=0, if no overflow occurs this function is equivalent to the function ippsFIRSubband_EC_32sc_Sfs with len equals to numSubbands.
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error when one of the specified pointers is NULL. |
ippStsLengthErr |
Indicates an error when len has an illegal value. |
ippStsRangeErr |
Indicates an error when numSegments, startSubband or scaleFactor is out of the specified range. |
Copyright © 2000 - 2011, Intel Corporation. All rights reserved.