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Adding_Waterfall_ZOOM_x2_in_AM_modes_Audio_App (#2586)

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* adding zoom_factor to app settings
* separated zoom_factor settings for AM and AMFM
* fix order so zoom factor is also applied correctly on modulation change
* fix zoom not applied when changing bandwidth
* temporary disable the Scanner so we are not breaking the nightly. Until we are choosing to finally remove it or find a better solution

---------

Co-authored-by: gullradriel <3157857+gullradriel@users.noreply.github.com>
Co-authored-by: gullradriel <gullradriel@no-mail.com>
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Brumi-2021 2025-03-23 23:08:12 +01:00 • committed by GitHub
parent 4b000c8da6
commit 21773cc3c3
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45
firmware/common/dsp_fir_taps.hpp
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@ -512,6 +512,51 @@ constexpr fir_taps_real<32> taps_6k0_decim_1{
}},
};
// IFIR prototype filter: fs=384000, pass=3000, stop=33000, decim=8, fout=48000
// Narrower taps_6k0_decim_1IFIR version to avoid LCD waterfall aliasing in AMFM Wefax in ZOOM X 2 (means spectrum decimation factor x2)
// It has BW -3dB's of +-9Khz, Stop band from 33khz onwards -60 dB's , then we can use in all AM modes (DSB, SSB,CW )
constexpr fir_taps_real<32> taps_6k0_narrow_decim_1{
.low_frequency_normalized = -3000.0f / 384000.0f,
.high_frequency_normalized = 3000.0f / 384000.0f,
.transition_normalized = 30000.0f / 384000.0f,
.taps = {{
58,
80,
138,
219,
326,
461,
622,
807,
1011,
1224,
1438,
1640,
1820,
1966,
2069,
2122,
2122,
2069,
1966,
1820,
1640,
1438,
1224,
1011,
807,
622,
461,
326,
219,
138,
80,
58,
}},
};
// IFIR prototype filter: fs=48000, pass=3000, stop=6700, decim=4, fout=12000
constexpr fir_taps_real<32> taps_6k0_decim_2{
.low_frequency_normalized = -3000.0f / 48000.0f,