diff options
Diffstat (limited to 'gr-fft/lib/window.cc')
| -rw-r--r-- | gr-fft/lib/window.cc | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/gr-fft/lib/window.cc b/gr-fft/lib/window.cc index 1610b46f5d..015e2d9943 100644 --- a/gr-fft/lib/window.cc +++ b/gr-fft/lib/window.cc @@ -74,7 +74,24 @@ namespace gr { return 1.0/(ntaps >> 1); } - std::vector<float> + double + window::max_attenuation(win_type type, double beta) + { + switch(type) { + case(WIN_HAMMING): return 53; break; + case(WIN_HANN): return 44; break; + case(WIN_BLACKMAN): return 74; break; + case(WIN_RECTANGULAR): return 21; break; + case(WIN_KAISER): return (beta/0.1102 + 8.7); break; + case(WIN_BLACKMAN_hARRIS): return 92; break; + case(WIN_BARTLETT): return 27; break; + case(WIN_FLATTOP): return 93; break; + default: + throw std::out_of_range("window::max_attenuation: unknown window type provided."); + } + } + + std::vector<float> window::coswindow(int ntaps, float c0, float c1, float c2) { std::vector<float> taps(ntaps); |