106 lines
2.3 KiB
C++
106 lines
2.3 KiB
C++
#pragma once
|
|
#include "lasp_mathtypes.h"
|
|
|
|
/**
|
|
* @brief Window (aka taper) functions of a certain type
|
|
*/
|
|
class Window {
|
|
|
|
public:
|
|
enum class WindowType {
|
|
Hann = 0,
|
|
Hamming = 1,
|
|
Rectangular = 2,
|
|
Bartlett = 3,
|
|
Blackman = 4,
|
|
|
|
};
|
|
/**
|
|
* @brief Convert a window type enum to its equivalent text.
|
|
*
|
|
* @param wt The window type to convert
|
|
*
|
|
* @return Text string
|
|
*/
|
|
static std::string toText(const WindowType wt) {
|
|
switch(wt) {
|
|
case(WindowType::Hann): {
|
|
return "Hann";
|
|
}
|
|
break;
|
|
case(WindowType::Hamming): {
|
|
return "Hamming";
|
|
}
|
|
break;
|
|
case(WindowType::Rectangular): {
|
|
return "Rectangular";
|
|
}
|
|
break;
|
|
case(WindowType::Bartlett): {
|
|
return "Bartlett";
|
|
}
|
|
break;
|
|
case(WindowType::Blackman): {
|
|
return "Blackman";
|
|
}
|
|
break;
|
|
}
|
|
throw std::runtime_error("Not implemenented window type");
|
|
}
|
|
|
|
/**
|
|
* @brief Dispatcher: create a window based on enum type and len
|
|
*
|
|
* @param w Window type
|
|
* @param len Length of the window (typically, integer power of two).
|
|
*
|
|
* @return Window vector of values
|
|
*/
|
|
static vd create(const WindowType w,const us len);
|
|
|
|
/**
|
|
* @brief Hann window
|
|
*
|
|
* @param len Length of the window (typically, integer power of two).
|
|
*
|
|
* @return vector of values
|
|
*/
|
|
static vd hann(const us len);
|
|
|
|
/**
|
|
* @brief Hamming window
|
|
*
|
|
* @param len Length of the window (typically, integer power of two).
|
|
*
|
|
* @return vector of values
|
|
*/
|
|
static vd hamming(const us len);
|
|
/**
|
|
* @brief Rectangular (boxcar) window.
|
|
*
|
|
* @param len Length of the window (typically, integer power of two).
|
|
*
|
|
* @return vector of values
|
|
*/
|
|
static vd rectangular(const us len);
|
|
|
|
/**
|
|
* @brief Bartlett window.
|
|
*
|
|
* @param len Length of the window (typically, integer power of two).
|
|
*
|
|
* @return vector of values
|
|
*/
|
|
static vd bartlett(const us len);
|
|
|
|
/**
|
|
* @brief Blackman window.
|
|
*
|
|
* @param len Length of the window (typically, integer power of two).
|
|
*
|
|
* @return vector of values
|
|
*/
|
|
static vd blackman(const us len);
|
|
|
|
};
|