29 lines
550 B
C
29 lines
550 B
C
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#include <cmath>
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#include <vector>
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class pickup_cancel {
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public:
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pickup_cancel(float fst_f, float eps, int nharm);
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float do_sample(float x_input);
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bool is_in_sync();
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float act_f;
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float act_phi;
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const float max_f;
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const float min_f;
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/* PLL filter time constant/fourier coeff time constant */
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const float decay_cst;
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float error_filter = 0.0f;
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/* If we are correctly in sync, E[x*cos(phi)] = 0.
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we do want to average over multiple periods.
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*/
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const int size;
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std::vector<float> cosine_coeffs;
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std::vector<float> sine_coeffs;
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};
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