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34 lines
441 B
C++
34 lines
441 B
C++
/*
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DC Blocker
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Copyright 2019 Ahmet Inan <inan@aicodix.de>
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*/
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#pragma once
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namespace DSP {
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template <typename TYPE, typename VALUE>
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class BlockDC
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{
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TYPE x1, y1;
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VALUE a, b;
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public:
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constexpr BlockDC() : x1(0), y1(0), a(0), b(0.5)
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{
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}
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void samples(int s)
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{
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a = VALUE(s - 1) / VALUE(s);
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b = (VALUE(1) + a) / VALUE(2);
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}
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TYPE operator()(TYPE x0)
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{
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TYPE y0 = b * (x0 - x1) + a * y1;
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x1 = x0; y1 = y0;
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return y0;
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}
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};
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}
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