mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-12-25 15:29:37 -05:00
61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
/*
|
|
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
|
|
*
|
|
* 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_IIR_CONFIG_H__
|
|
#define __DSP_IIR_CONFIG_H__
|
|
|
|
#include "dsp_iir.hpp"
|
|
|
|
// scipy.signal.butter(2, 30 / 24000.0, 'highpass', analog=False)
|
|
constexpr iir_biquad_config_t audio_hpf_30hz_config {
|
|
{ 0.99722705f, -1.99445410f, 0.99722705f },
|
|
{ 1.00000000f, -1.99444641f, 0.99446179f }
|
|
};
|
|
|
|
// scipy.signal.butter(2, 300 / 24000.0, 'highpass', analog=False)
|
|
constexpr iir_biquad_config_t audio_hpf_300hz_config {
|
|
{ 0.97261390f, -1.94522780f, 0.97261390f },
|
|
{ 1.00000000f, -1.94447766f, 0.94597794f }
|
|
};
|
|
|
|
// scipy.signal.iirdesign(wp=8000 / 24000.0, ws= 4000 / 24000.0, gpass=1, gstop=18, ftype='ellip')
|
|
constexpr iir_biquad_config_t non_audio_hpf_config {
|
|
{ 0.51891061f, -0.95714180f, 0.51891061f },
|
|
{ 1.0f , -0.79878302f, 0.43960231f }
|
|
};
|
|
|
|
// scipy.signal.butter(1, 300 / 24000.0, 'lowpass', analog=False)
|
|
// NOTE: Technically, order-1 filter, b[2] = a[2] = 0.
|
|
constexpr iir_biquad_config_t audio_deemph_300_6_config {
|
|
{ 0.01925927f, 0.01925927f, 0.00000000f },
|
|
{ 1.00000000f, -0.96148145f, 0.00000000f }
|
|
};
|
|
|
|
// 75us RC time constant, used in broadcast FM in Americas, South Korea
|
|
// scipy.signal.butter(1, 2122 / 24000.0, 'lowpass', analog=False)
|
|
// NOTE: Technically, order-1 filter, b[2] = a[2] = 0.
|
|
constexpr iir_biquad_config_t audio_deemph_2122_6_config {
|
|
{ 0.12264116f, 0.12264116f, 0.00000000f },
|
|
{ 1.00000000f, -0.75471767f, 0.00000000f }
|
|
};
|
|
|
|
#endif/*__DSP_IIR_CONFIG_H__*/
|