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https://github.com/eried/portapack-mayhem.git
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52c3760e90
* Adding_new_WFAX_GUI_mode_Audio_App * Wefax_APT_demodulation_structure * Solving REC Apt signal.wav from WFAX * clang format issues * correcting comments
55 lines
2.5 KiB
C++
55 lines
2.5 KiB
C++
/*
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* Copyright (C) 2020 Belousov Oleg
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __DSP_SOS_CONFIG_H__
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#define __DSP_SOS_CONFIG_H__
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#include "dsp_iir.hpp"
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// scipy.signal.iirfilter(ftype="ellip", N = 10, rp = 0.5, rs = 60.0, Wn = 0.5, btype = 'lowpass', output="sos")
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// 3khz cutofff @fs:12Khz , used in Hilbert
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constexpr iir_biquad_df2_config_t half_band_lpf_config[5] = {
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{0.02339042f, 0.0411599f, 0.02339042f, 1.0f, -0.95317621f, 0.33446485f},
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{1.0f, 0.82196114f, 1.0f, 1.0f, -0.50327735f, 0.63611027f},
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{1.0f, 0.32515305f, 1.0f, 1.0f, -0.18144446f, 0.85269598f},
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{1.0f, 0.14394122f, 1.0f, 1.0f, -0.04368236f, 0.94798064f},
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{1.0f, 0.08720754, 1.0f, 1.0f, 0.00220944f, 0.98743139f}};
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// scipy.signal.iirfilter(ftype="ellip", N = 10, rp = 0.5, rs = 60.0, Wn = 0.99, btype = 'lowpass', output="sos")
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// 6khz cutofff @fs:12Khz , used in WFAX demod.
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constexpr iir_biquad_df2_config_t full_band_lpf_config[5] = {
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{0.88095275f, 1.76184993f, 0.88095275f, 1.0f, 1.89055677f, 0.89616378f},
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{1.0f, 1.99958798f, 1.0f, 1.0f, 1.9781807f, 0.98002549f},
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{1.0f, 1.99928911f, 1.0f, 1.0f, 1.99328036f, 0.99447816f},
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{1.0f, 1.99914562f, 1.0f, 1.0f, 1.997254f, 0.99828526f},
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{1.0f, 1.99909558f, 1.0f, 1.0f, 1.9986187f, 0.99960319f}};
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// scipy.signal.iirfilter(ftype="ellip", N = 10, rp = 0.5 , rs = 60.0, Wn = 0.25, btype = 'lowpass', output="sos")
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// 1.5khz cutofff @fs:12Khz, used in WFAX demod.
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constexpr iir_biquad_df2_config_t quarter_band_lpf_config[5] = {
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{0.00349312f, 0.00319397f, 0.00349312f, 1.0f, -1.53025211f, 0.6203438f},
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{1.0f, -0.83483341f, 1.0f, 1.0f, -1.47619047f, 0.77120659f},
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{1.0f, -1.23050154f, 1.0f, 1.0f, -1.43058949f, 0.9000896f},
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{1.0f, -1.33837384f, 1.0f, 1.0f, -1.41007744f, 0.96349953f},
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{1.0f, -1.36921549f, 1.0f, 1.0f, -1.40680439f, 0.9910884f}};
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#endif /*__DSP_SOS_CONFIG_H__*/
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