DcBlock.h

// DSPark - Professional Audio DSP Framework
// Copyright (c) 2026 Cristian Moresi - MIT License
 
#pragma once
 
namespace dspark::detail
{
struct DcBlockState
{
    double x1 = 0.0;
    double y1 = 0.0;
};
 
[[nodiscard]] inline double dcBlockStep(double pole, DcBlockState &state, double input) noexcept
{
    const double output = (input - state.x1) + pole * state.y1;
    state.x1 = input;
    state.y1 = output;
    return output;
}
} // namespace dspark::detail