44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
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/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2018 Furrtek
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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_GOERTZEL_H__
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#define __DSP_GOERTZEL_H__
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#include "dsp_types.hpp"
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namespace dsp {
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class GoertzelDetector {
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public:
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GoertzelDetector(const float frequency, const uint32_t sample_rate);
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float execute(const buffer_s16_t& src);
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private:
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float coefficient { };
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int16_t s[2] { 0 };
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};
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} /* namespace dsp */
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#endif/*__DSP_GOERTZEL_H__*/
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