kopia lustrzana https://github.com/Dsplib/libdspl-2.0
added low2bp filter transform
Dsplib
rodzic
afdc6bf7e5
commit
19d4e40a88
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@ -25,9 +25,37 @@
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/******************************************************************************
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* low 2 bandpass transformation
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******************************************************************************/
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int DSPL_API low2bp( double* b, double* a, int ord,
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double w0, double wpl, double wph,
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double* beta, double* alpha)
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{
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double num[3] = {0.0, 0.0, 1.0};
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double den[3] = {0.0, 0.0, 0.0};
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if(!b || !a || !beta || !alpha)
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return ERROR_PTR;
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if(ord < 1)
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return ERROR_FILTER_ORD;
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if(w0 <= 0.0 || wpl <= 0.0 || wph <= 0.0 || wph <= wpl)
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return ERROR_FILTER_FT;
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num[0] = (wph * wpl) / (w0 * w0);
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den[1] = (wph - wpl) / w0;
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return ratcompos(b, a, ord, num, den, 2, beta, alpha);
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}
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/******************************************************************************
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* low 2 high transformation
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*******************************************************************************/
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******************************************************************************/
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int DSPL_API low2high(double* b, double* a, int ord, double w0, double w1,
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double* beta, double* alpha)
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{
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@ -85,7 +85,7 @@ p_flipip_cmplx flipip_cmplx ;
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p_fourier_series_dec fourier_series_dec ;
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p_fourier_series_rec fourier_series_rec ;
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p_freqs freqs ;
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p_freqs_cmplx freqs_cmplx ;
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p_freqs_cmplx freqs_cmplx ;
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p_freqs_resp freqs_resp ;
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p_freqs2time freqs2time ;
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p_freqz freqz ;
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@ -94,8 +94,9 @@ p_goertzel_cmplx goertzel_cmplx ;
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p_linspace linspace ;
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p_log_cmplx log_cmplx ;
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p_logspace logspace ;
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p_low2low low2low ;
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p_low2bp low2bp ;
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p_low2high low2high ;
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p_low2low low2low ;
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p_poly_z2a_cmplx poly_z2a_cmplx ;
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p_polyval polyval ;
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p_polyval_cmplx polyval_cmplx ;
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@ -223,8 +224,9 @@ void* dspl_load()
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LOAD_FUNC(linspace);
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LOAD_FUNC(log_cmplx);
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LOAD_FUNC(logspace);
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LOAD_FUNC(low2low);
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LOAD_FUNC(low2bp);
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LOAD_FUNC(low2high);
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LOAD_FUNC(low2low);
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LOAD_FUNC(poly_z2a_cmplx);
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LOAD_FUNC(polyval);
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LOAD_FUNC(polyval_cmplx);
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@ -522,6 +522,15 @@ DECLARE_FUNC(int, logspace, double
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COMMA int
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COMMA double*);
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//------------------------------------------------------------------------------
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DECLARE_FUNC(int, low2bp, double* b
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COMMA double* a
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COMMA int ord
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COMMA double w0
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COMMA double wpl
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COMMA double wph
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COMMA double* beta
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COMMA double* alpha);
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//------------------------------------------------------------------------------
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DECLARE_FUNC(int, low2high, double* b
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COMMA double* a
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COMMA int ord
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@ -85,7 +85,7 @@ p_flipip_cmplx flipip_cmplx ;
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p_fourier_series_dec fourier_series_dec ;
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p_fourier_series_rec fourier_series_rec ;
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p_freqs freqs ;
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p_freqs_cmplx freqs_cmplx ;
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p_freqs_cmplx freqs_cmplx ;
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p_freqs_resp freqs_resp ;
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p_freqs2time freqs2time ;
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p_freqz freqz ;
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@ -94,8 +94,9 @@ p_goertzel_cmplx goertzel_cmplx ;
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p_linspace linspace ;
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p_log_cmplx log_cmplx ;
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p_logspace logspace ;
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p_low2low low2low ;
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p_low2bp low2bp ;
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p_low2high low2high ;
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p_low2low low2low ;
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p_poly_z2a_cmplx poly_z2a_cmplx ;
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p_polyval polyval ;
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p_polyval_cmplx polyval_cmplx ;
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@ -223,8 +224,9 @@ void* dspl_load()
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LOAD_FUNC(linspace);
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LOAD_FUNC(log_cmplx);
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LOAD_FUNC(logspace);
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LOAD_FUNC(low2low);
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LOAD_FUNC(low2bp);
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LOAD_FUNC(low2high);
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LOAD_FUNC(low2low);
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LOAD_FUNC(poly_z2a_cmplx);
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LOAD_FUNC(polyval);
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LOAD_FUNC(polyval_cmplx);
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@ -522,6 +522,15 @@ DECLARE_FUNC(int, logspace, double
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COMMA int
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COMMA double*);
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//------------------------------------------------------------------------------
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DECLARE_FUNC(int, low2bp, double* b
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COMMA double* a
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COMMA int ord
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COMMA double w0
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COMMA double wpl
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COMMA double wph
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COMMA double* beta
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COMMA double* alpha);
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//------------------------------------------------------------------------------
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DECLARE_FUNC(int, low2high, double* b
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COMMA double* a
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COMMA int ord
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@ -28,3 +28,6 @@ int main()
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}
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