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Add AM spectrum ZOOM x3/x4 with optimized x4 decimation (#3304)

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* Add AM spectrum zoom x3 and x4
* Optimize AM spectrum zoom x4 processing
* Fix AM spectrum zoom formatting
* Fix AM spectrum zoom header formatting
This commit is contained in:
Brumi-2021
2026-08-28 12:30:18 +02:00
committed by GitHub
parent 6e95288c1f
commit ee568ec774
15 changed files with 422 additions and 36 deletions
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firmware/application/baseband_api.cpp
+5 -1
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@@ -71,6 +71,10 @@ static void send_message(const Message* const message) {
}
void AMConfig::apply() const {
apply((AMConfigureMessage::Zoom_waterfall)spectrum_decimation_factor);
}
void AMConfig::apply(const AMConfigureMessage::Zoom_waterfall spectrum_zoom) const {
const AMConfigureMessage message{
taps_6k0_decim_0, // common FIR filter taps pre-decim_0 to all 6 x AM mod types.(AM-9K, AM-6K, USB, LSB, CW, AMFM-WFAX)
decim_1, // var decim_1 FIR taps filter , variable values , to handle two spectrum decim factor 1 and 2 (zoom) and more APT LPF filtered .
@@ -78,7 +82,7 @@ void AMConfig::apply() const {
channel, // var channel FIR taps filter , variable values, depending selected AM mode, each one different (DSB-9K, DSB-6K, USB-3K, LSB-3K,CW,AMFM-WFAX)
modulation, // var parameter . enum class Modulation : int32_t {DSB = 0, SSB = 1, SSB_FM = 2}
audio_12k_iir_filter_config, // var parameter , 300 Hz hpf all except Wefax (1.500Hz lpf)
spectrum_decimation_factor}; // var parameter , waterfall no zoom : 1 ,for zoom x 2 : 2
(size_t)spectrum_zoom};
send_message(&message);
audio::set_rate(audio::Rate::Hz_12000);
}