Git-Mirrors/portapack-mayhem
1
0
Fork 0
mirror of https://github.com/eried/portapack-mayhem.git synced 2025-08-08 06:32:35 -04:00
Code Issues Projects Releases Packages Wiki Activity

Adding_WFM_AM_mode_to_Audio_App (#2644)

Browse source 
* Adding_WFM_AM_mode_to_Audio_App
* more precise values for cos and sin theta, fix sen_theta to sin_theta
* fix sen_theta to sin_theta
This commit is contained in:
Brumi-2021 2025-05-05 17:48:01 +02:00 • committed by GitHub
parent bd781ce37b
commit 4342f5c0ee
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
18 changed files with 448 additions and 49 deletions
Download patch file Download diff file Expand all files Collapse all files

15
firmware/common/dsp_iir_config.hpp
View file

@ -56,8 +56,8 @@ constexpr iir_biquad_config_t audio_12k_hpf_300hz_config{
{1.00000000f, -1.77863178f, 0.80080265f}};
// scipy.signal.butter(2, 1500 / 6000.0, 'low', analog=False)
constexpr iir_biquad_config_t audio_12k_lpf_1500hz_config{
// Added to lpf the audio in wefax mode , before sending to SD card or spk.
constexpr iir_biquad_config_t apt_audio_12k_lpf_1500hz_config{
// Added to lpf the apt audio in wefax mode , before sending to SD card or spk.
{0.09763107f, 0.19526215f, 0.09763107f},
{1.00000000f, -0.94280904f, 0.33333333f}};
@ -108,4 +108,15 @@ constexpr iir_biquad_config_t audio_48k_deemph_2122_6_config{
{0.12264116f, 0.12264116f, 0.00000000f},
{1.00000000f, -0.75471767f, 0.00000000f}};
// scipy.signal.iirnotch(f0, Q, fs) = signal.iirnotch(2400, 15, 12000)
constexpr iir_biquad_config_t apt_audio_12k_notch_2k4_config{
{0.95977357f, -0.59317269f, 0.95977357f},
{1.00000000f, -0.59317269f, 0.91954714f}};
// scipy.signal.butter(2, 2000 / 6000.0, 'low', analog=False)
constexpr iir_biquad_config_t apt_audio_12k_lpf_2000hz_config{
// Added to lpf the apt audio in NOAA mode , before sending to SD card or spk.
{0.15505103f, 0.31010205f, 0.15505103f},
{1.00000000f, -0.6202041f, 0.24040821f}};
#endif /*__DSP_IIR_CONFIG_H__*/