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99
firmware/common/dsp_iir_config.hpp
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@ -26,95 +26,82 @@
#include "dsp_iir.hpp"
// scipy.signal.butter(2, 30 / 24000.0, 'highpass', analog=False)
constexpr iir_biquad_config_t audio_48k_hpf_30hz_config {
{ 0.99722705f, -1.99445410f, 0.99722705f },
{ 1.00000000f, -1.99444641f, 0.99446179f }
};
constexpr iir_biquad_config_t audio_48k_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_48k_hpf_300hz_config {
{ 0.97261390f, -1.94522780f, 0.97261390f },
{ 1.00000000f, -1.94447766f, 0.94597794f }
};
constexpr iir_biquad_config_t audio_48k_hpf_300hz_config{
{0.97261390f, -1.94522780f, 0.97261390f},
{1.00000000f, -1.94447766f, 0.94597794f}};
// scipy.signal.butter(2, 300 / 12000.0, 'highpass', analog=False)
constexpr iir_biquad_config_t audio_24k_hpf_300hz_config {
{ 0.94597686f, -1.89195371f, 0.94597686f },
{ 1.00000000f, -1.88903308f, 0.89487434f }
constexpr iir_biquad_config_t audio_24k_hpf_300hz_config{
{0.94597686f, -1.89195371f, 0.94597686f},
{1.00000000f, -1.88903308f, 0.89487434f}
};
// scipy.signal.butter(2, 30 / 12000.0, 'highpass', analog=False)
constexpr iir_biquad_config_t audio_24k_hpf_30hz_config {
{ 0.99446179f, -1.98892358f, 0.99446179f },
{ 1.00000000f, -1.98889291f, 0.98895425f }
};
constexpr iir_biquad_config_t audio_24k_hpf_30hz_config{
{0.99446179f, -1.98892358f, 0.99446179f},
{1.00000000f, -1.98889291f, 0.98895425f}};
// scipy.signal.butter(2, 300 / 8000.0, 'highpass', analog=False)
constexpr iir_biquad_config_t audio_16k_hpf_300hz_config {
{ 0.92006616f, -1.84013232f, 0.92006616f },
{ 1.00000000f, -1.83373266f, 0.84653197f }
};
constexpr iir_biquad_config_t audio_16k_hpf_300hz_config{
{0.92006616f, -1.84013232f, 0.92006616f},
{1.00000000f, -1.83373266f, 0.84653197f}};
// scipy.signal.butter(2, 300 / 6000.0, 'highpass', analog=False)
constexpr iir_biquad_config_t audio_12k_hpf_300hz_config {
{ 0.89485861f, -1.78971721f, 0.89485861f },
{ 1.00000000f, -1.77863178f, 0.80080265f }
};
constexpr iir_biquad_config_t audio_12k_hpf_300hz_config{
{0.89485861f, -1.78971721f, 0.89485861f},
{1.00000000f, -1.77863178f, 0.80080265f}};
// scipy.signal.butter(2, 300 / 4000.0, 'highpass', analog=False)
constexpr iir_biquad_config_t audio_8k_hpf_300hz_config {
{ 0.84645925f, -1.69291851f, 0.84645925f },
{ 1.00000000f, -1.66920314f, 0.71663387f }
};
constexpr iir_biquad_config_t audio_8k_hpf_300hz_config{
{0.84645925f, -1.69291851f, 0.84645925f},
{1.00000000f, -1.66920314f, 0.71663387f}};
// 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 }
};
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_48k_deemph_300_6_config {
{ 0.01925927f, 0.01925927f, 0.00000000f },
{ 1.00000000f, -0.96148145f, 0.00000000f }
};
constexpr iir_biquad_config_t audio_48k_deemph_300_6_config{
{0.01925927f, 0.01925927f, 0.00000000f},
{1.00000000f, -0.96148145f, 0.00000000f}};
// scipy.signal.butter(1, 300 / 12000.0, 'lowpass', analog=False)
// NOTE: Technically, order-1 filter, b[2] = a[2] = 0.
constexpr iir_biquad_config_t audio_24k_deemph_300_6_config {
{ 0.03780475f, 0.03780475f, 0.00000000f },
{ 1.00000000f, -0.92439049f, 0.00000000f }
};
constexpr iir_biquad_config_t audio_24k_deemph_300_6_config{
{0.03780475f, 0.03780475f, 0.00000000f},
{1.00000000f, -0.92439049f, 0.00000000f}};
// scipy.signal.butter(1, 300 / 8000.0, 'lowpass', analog=False)
// NOTE: Technically, order-1 filter, b[2] = a[2] = 0.
constexpr iir_biquad_config_t audio_16k_deemph_300_6_config {
{ 0.05568894f, 0.05568894f, 0.00000000f },
{ 1.00000000f, -0.88862213f, 0.00000000f }
};
constexpr iir_biquad_config_t audio_16k_deemph_300_6_config{
{0.05568894f, 0.05568894f, 0.00000000f},
{1.00000000f, -0.88862213f, 0.00000000f}};
// scipy.signal.butter(1, 300 / 6000.0, 'lowpass', analog=False)
// NOTE: Technically, order-1 filter, b[2] = a[2] = 0.
constexpr iir_biquad_config_t audio_12k_deemph_300_6_config {
{ 0.07295966f, 0.07295966f, 0.00000000f },
{ 1.00000000f, -0.85408069f, 0.00000000f }
};
constexpr iir_biquad_config_t audio_12k_deemph_300_6_config{
{0.07295966f, 0.07295966f, 0.00000000f},
{1.00000000f, -0.85408069f, 0.00000000f}};
// scipy.signal.butter(1, 300 / 4000.0, 'lowpass', analog=False)
// NOTE: Technically, order-1 filter, b[2] = a[2] = 0.
constexpr iir_biquad_config_t audio_8k_deemph_300_6_config {
{ 0.10583178f, 0.10583178f, 0.00000000f },
{ 1.00000000f, -0.78833643f, 0.00000000f }
};
constexpr iir_biquad_config_t audio_8k_deemph_300_6_config{
{0.10583178f, 0.10583178f, 0.00000000f},
{1.00000000f, -0.78833643f, 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_48k_deemph_2122_6_config {
{ 0.12264116f, 0.12264116f, 0.00000000f },
{ 1.00000000f, -0.75471767f, 0.00000000f }
};
constexpr iir_biquad_config_t audio_48k_deemph_2122_6_config{
{0.12264116f, 0.12264116f, 0.00000000f},
{1.00000000f, -0.75471767f, 0.00000000f}};
#endif/*__DSP_IIR_CONFIG_H__*/
#endif /*__DSP_IIR_CONFIG_H__*/