jens
0179c510fe
git-svn-id: http://moon:8086/svn/software/trunk/libsrc/fir@1 b431acfa-c32f-4a4a-93f1-934dc6c82436
42 lines
1.8 KiB
C
Executable File
42 lines
1.8 KiB
C
Executable File
/******************************************************************************/
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/* fir2.h */
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/******************************************************************************/
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#ifndef FIR_H
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#define FIR_H
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#ifndef fir_pi
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#define fir_pi 3.1415926535897932384626433832795
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#endif
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#ifndef fir_float_t
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#define fir_float_t float
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#endif
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/******************************************************************************/
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fir_float_t Sinc(fir_float_t x);
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void CalcSincFilter(fir_float_t *pY, fir_float_t s, fir_float_t f, int len);
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void FIRCalcLowpass(fir_float_t omega, fir_float_t *pCoeff, int N);
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void FIRCalcHighpass(fir_float_t omega, fir_float_t *pCoeff, int N);
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void FIRCalcBandpass(fir_float_t omega, fir_float_t bw, fir_float_t *pCoeff, int N);
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void FIR(fir_float_t *pCoeff, fir_float_t *pState, int order, fir_float_t *x, fir_float_t *y, int len);
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void FIR_upsample(fir_float_t *pCoeff, fir_float_t *pState, int order, fir_float_t *x, fir_float_t *y, int upsample_factor, int len);
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void FIR_downsample(fir_float_t *pCoeff, fir_float_t *pState, int order, fir_float_t *x, fir_float_t *y, int downsample_factor, int len);
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void CalcHamming(fir_float_t *pX, fir_float_t *pY, int len);
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void CalcVonHann(fir_float_t *pX, fir_float_t *pY, int len);
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void CalcBlackman(fir_float_t *pX, fir_float_t *pY, int len);
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void CalcKaiser(fir_float_t *pX, fir_float_t *pY, fir_float_t b, int len);
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void CalcKaiserSR(fir_float_t *pX, fir_float_t *pY, fir_float_t b, int len);
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fir_float_t CalcFirRC(fir_float_t *pB, fir_float_t fa, fir_float_t Tsym, fir_float_t Alpha, int N);
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fir_float_t CalcFirSRRC(fir_float_t *pB, fir_float_t fa, fir_float_t Tsym, fir_float_t Alpha, int N);
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/******************************************************************************/
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#if defined(__cplusplus)
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}
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#endif
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#endif /* FIR_H */
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