kopia lustrzana https://github.com/f4exb/sdrangel
49 wiersze
2.3 KiB
C++
49 wiersze
2.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2022 Edouard Griffiths, F4EXB. //
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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 as version 3 of the License, or //
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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 V3 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. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include "m17demodfilters.h"
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const float M17DemodAudioInterpolatorFilter::m_lpa[3] = {1.0, 1.392667E+00, -5.474446E-01};
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const float M17DemodAudioInterpolatorFilter::m_lpb[3] = {3.869430E-02, 7.738860E-02, 3.869430E-02};
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// f(-3dB) = 300 Hz @ 8000 Hz SR (w = 0.075):
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const float M17DemodAudioInterpolatorFilter::m_hpa[3] = {1.000000e+00, 1.667871e+00, -7.156964e-01};
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const float M17DemodAudioInterpolatorFilter::m_hpb[3] = {8.459039e-01, -1.691760e+00, 8.459039e-01};
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M17DemodAudioInterpolatorFilter::M17DemodAudioInterpolatorFilter() :
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m_filterLP(m_lpa, m_lpb),
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m_filterHP(m_hpa, m_hpb),
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m_useHP(false)
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{
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}
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M17DemodAudioInterpolatorFilter::~M17DemodAudioInterpolatorFilter()
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{}
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float M17DemodAudioInterpolatorFilter::run(const float& sample)
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{
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return m_useHP ? m_filterLP.run(m_filterHP.run(sample)) : m_filterLP.run(sample);
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}
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float M17DemodAudioInterpolatorFilter::runHP(const float& sample)
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{
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return m_filterHP.run(sample);
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}
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float M17DemodAudioInterpolatorFilter::runLP(const float& sample)
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{
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return m_filterLP.run(sample);
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}
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