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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/baseband/dsp_decimate.hpp
+22
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@@ -170,6 +170,28 @@ class FIRC16xR16x16Decim2 {
int32_t output_scale = 0;
};
class FIRC16xR16x32Decim4 {
public:
static constexpr size_t taps_count = 32;
static constexpr size_t decimation_factor = 4;
using sample_t = complex16_t;
using tap_t = int16_t;
void configure(
const std::array<tap_t, taps_count>& taps,
const int32_t scale = c16_to_c32_sat_scalar);
buffer_c16_t execute(
const buffer_c16_t& src,
const buffer_c16_t& dst);
private:
std::array<vec2_s16, taps_count - decimation_factor> z_{};
std::array<tap_t, taps_count> taps_{};
int32_t output_scale = 0;
};
class FIRC16xR16x63HalfbandDecim2 {
public:
static constexpr size_t taps_count = 63;