diff options
Diffstat (limited to 'gnuradio-core/src/lib/general/gr_firdes.i')
| -rw-r--r-- | gnuradio-core/src/lib/general/gr_firdes.i | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/gnuradio-core/src/lib/general/gr_firdes.i b/gnuradio-core/src/lib/general/gr_firdes.i index 6fbe27f67..4ac9855d2 100644 --- a/gnuradio-core/src/lib/general/gr_firdes.i +++ b/gnuradio-core/src/lib/general/gr_firdes.i @@ -43,6 +43,31 @@ class gr_firdes { ) throw(std::out_of_range); /*! + * \brief use "window method" to design a low-pass FIR filter + * using alternative design criteria + * \p gain: overall gain of filter (typically 1.0) + * \p sampling_freq: sampling freq (Hz) + * \p cutoff_freq: center of transition band (Hz) + * \p transition_width: width of transition band (Hz). + * The normalized width of the transition + * band is what sets the number of taps + * required. Narrow --> more taps + * \p attenuation_dB The required stop band attenuation in dB + * \p window_type: What kind of window to use. Determines + * maximum attenuation and passband ripple. + * \p beta: parameter for Kaiser window + */ + static std::vector<float> + low_pass_2 (double gain, + double sampling_freq, + double cutoff_freq, // Hz center of transition band + double transition_width, // Hz width of transition band + double attenuation_dB, // out of band attenuation + win_type window = WIN_HAMMING, + double beta = 6.76 // used only with Kaiser + ) throw(std::out_of_range); + + /*! * \brief use "window method" to design a high-pass FIR filter * * \p gain: overall gain of filter (typically 1.0) |