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Add 12k5 RXBW to NFM Mode (#3023)

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* Add 12k5 option to NFM
* Updated freqman_db
* Add 12k5 RXBW to NFM
* Add 12k5 RXBW
* formating
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2026-02-23 03:53:26 +08:00
committed by GitHub
parent abee022000
commit 4cc2ba690b
4 changed files with 37 additions and 3 deletions
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firmware/common/dsp_fir_taps.hpp
+31
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@@ -278,6 +278,37 @@ constexpr fir_taps_real<32> taps_11k0_channel{
}},
};
// NBFM 12K5F3E emission type /////////////////////////////////////////////
// IFIR image-reject filter: fs=3072000, pass=6250, stop=342250, decim=8, fout=384000
constexpr fir_taps_real<24> taps_12k5_decim_0{
.low_frequency_normalized = -6250.0f / 3072000.0f,
.high_frequency_normalized = 6250.0f / 3072000.0f,
.transition_normalized = 336000.0f / 3072000.0f,
.taps = {{42, 108, 226, 412, 672, 1004, 1391, 1807, 2211, 2565, 2828, 2969,
2969, 2828, 2565, 2211, 1807, 1391, 1004, 672, 412, 226, 108, 42}},
};
// IFIR prototype filter: fs=384000, pass=6250, stop=42500, decim=8, fout=48000
constexpr fir_taps_real<32> taps_12k5_decim_1{
.low_frequency_normalized = -6250.0f / 384000.0f,
.high_frequency_normalized = 6250.0f / 384000.0f,
.transition_normalized = 36250.0f / 384000.0f,
.taps = {{-38, -85, -162, -245, -315, -338, -275, -85, 255, 752, 1378, 2088,
2807, 3452, 3939, 4202, 4202, 3939, 3452, 2807, 2088, 1378, 752, 255,
-85, -275, -338, -315, -245, -162, -85, -38}},
};
// Channel filter: fs=48000, pass=6250, stop=9250, decim=1, fout=48000
constexpr fir_taps_real<32> taps_12k5_channel{
.low_frequency_normalized = -6250.0f / 48000.0f,
.high_frequency_normalized = 6250.0f / 48000.0f,
.transition_normalized = 3000.0f / 48000.0f,
.taps = {{-75, -362, -712, -908, -592, 268, 1324, 1720, 684, -1522, -3541, -3385,
342, 7150, 14642, 19541, 19541, 14642, 7150, 342, -3385, -3541, -1522, 684,
1720, 1324, 268, -592, -908, -712, -362, -75}},
};
// NBFM 8K50F3E emission type /////////////////////////////////////////////
// IFIR image-reject filter: fs=3072000, pass=4250, stop=340250, decim=8, fout=384000