filter_design.hpp

Go to the documentation of this file.

// toolboxes/signal/include/nk/signal/filter_design/filter_design.hpp
#pragma once
 
#include <memory_resource>
#include <nk/value/value.hpp>
 
#include <string>
#include <tuple>
 
namespace nk::signal {

 

std::tuple<Value, Value>
butter(int                          N,
       double                       Wn,
       const std::string &          type = "low",
       std::pmr::memory_resource *  mr   = nullptr);

Value fir1(int                          N,
           double                       Wn,
           const std::string &          type = "low",
           std::pmr::memory_resource *  mr   = nullptr);

Value firls(int                          N,
            const Value &                F,
            const Value &                A,
            std::pmr::memory_resource *  mr = nullptr);

std::tuple<Value, Value>
cell2sos(const Value &                C,
         std::pmr::memory_resource *  mr = nullptr);

struct Fir2Options {
    int   npt = 0;

    int   lap = 0;

    Value window = Value::Empty;
};

Value fir2(int                          n,
           const Value &                f,
           const Value &                m,
           const Fir2Options &          opts = {},
           std::pmr::memory_resource *  mr   = nullptr);

std::tuple<Value, double>
firpm(int                          N,
      const Value &                F,
      const Value &                A,
      const Value &                W      = Value::Empty,
      const std::string &          ftype  = "",
      std::pmr::memory_resource *  mr     = nullptr);
 

} // namespace nk::signal