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https://github.com/radio95-rnt/fm95.git
synced 2026-02-27 03:23:54 +01:00
generate the 66.5 inside the pll via the pilot
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@@ -7,8 +7,8 @@
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typedef struct
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{
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float alpha;
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float prev_sample;
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float alpha;
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float prev_sample;
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} ResistorCapacitor;
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void init_preemphasis(ResistorCapacitor *filter, float tau, float sample_rate);
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@@ -17,14 +17,16 @@ float apply_preemphasis(ResistorCapacitor *filter, float sample);
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float hard_clip(float sample, float threshold);
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typedef struct {
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float phase;
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float freq;
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float ref_freq;
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float loop_filter_state;
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float kp;
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float ki;
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int sample_rate;
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int quadrature_mode;
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float phase;
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float freq;
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float loop_filter_state;
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float kp;
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float ki;
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float last_output;
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int interpolation;
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int decimation;
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int sample_rate;
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int quadrature_mode;
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} PLL;
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void init_pll(PLL *pll, float output_freq, float refrence_freq, float loop_filter_bandwidth, int quadrature_mode, int sample_rate);
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float apply_pll(PLL *pll, float ref_sample, float input_sample);
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void init_pll(PLL *pll, int interpolation, int decimation, float freq, float loop_filter_bandwidth, int quadrature_mode, int sample_rate);
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float apply_pll(PLL *pll, float ref_sample);
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