portapack-mayhem/firmware/common/dsp_sos.hpp

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/*
* Copyright (C) 2020 Belousov Oleg
*
* This file is part of PortaPack.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef __DSP_SOS_H__
#define __DSP_SOS_H__
#include "dsp_iir.hpp"
#include <cstdint>
#include <cstddef>
template <size_t N>
class SOSFilter {
public:
void configure(const iir_biquad_df2_config_t config[N]) {
for (size_t i = 0; i < N; i++)
filters[i].configure(config[i]);
}
float execute(float value) {
for (auto& filter : filters)
value = filter.execute(value);
return value;
}
private:
IIRBiquadDF2Filter filters[N];
};
#endif /*__DSP_SOS_H__*/