Mirrors/VILLASnode
1
0
Fork 0
mirror of https://git.rwth-aachen.de/acs/public/villas/node/ synced 2025-03-09 00:00:00 +01:00
Code Issues Releases Wiki Activity

window_cosine update to c++17

Browse source
This commit is contained in:
Manuel Pitz 2022-05-02 18:17:38 +02:00 • committed by Steffen Vogel
parent 9258537039
commit d45b353f26
1 changed files with 34 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

41
common/include/villas/dsp/window_cosine.hpp
View file

@ -32,7 +32,9 @@
namespace villas {
namespace dsp {
template<typename T, double a0 = 1.0, double a1 = 0.0, double a2 = 0.0, double a3 = 0.0, double a4 = 0.0>
template<typename T>// a0 = 1.0, double a1 = 0.0, double a2 = 0.0, double a3 = 0.0, double a4 = 0.0>
class CosineWindow : public Window<T> {
public:
@ -50,7 +52,7 @@ protected:
}
public:
CosineWindow(size_type len, T i = 0) :
CosineWindow(double a0, double a1, double a2, double a3, double a4, size_type len, T i = 0) :
Window<T>(len, i),
coefficients(len),
correctionFactor(0)
@ -79,19 +81,44 @@ public:
// From: https://en.wikipedia.org/wiki/Window_function#Cosine-sum_windows
template<typename T>
using HannWindow = CosineWindow<T, 0.5, 0.5>;
class HannWindow : public CosineWindow<T> {
public:
HannWindow(typename Window<T>::size_type len, T i = 0) :
CosineWindow<T>(0.5, 0.5, 0., 0., 0., len, i) {}
};
template<typename T>
using HammingWindow = CosineWindow<T, 25./46, 1 - 25./46>;
class HammingWindow : public CosineWindow<T> {
public:
HammingWindow(typename Window<T>::size_type len, T i = 0) :
CosineWindow<T>(25./46, 1 - 25./46, 0., 0., 0., len, i) {}
};
template<typename T>
using FlattopWindow = CosineWindow<T, 0.21557895, 0.41663158, 0.277263158, 0.083578947, 0.006947368>; // based on MATLAB coeffs
class FlattopWindow : public CosineWindow<T> {
public:
FlattopWindow(typename Window<T>::size_type len, T i = 0) :
CosineWindow<T>(0.21557895, 0.41663158, 0.277263158, 0.083578947, 0.006947368, len, i) {}
};
template<typename T>
using NuttallWindow = CosineWindow<T, 0.355768, 0.487396, 0.144232, 0.012604>;
class NuttallWindow : public CosineWindow<T> {
public:
NuttallWindow(typename Window<T>::size_type len, T i = 0) :
CosineWindow<T>(0.355768, 0.487396, 0.144232, 0.012604, 0., len, i) {}
};
template<typename T>
using BlackmanWindow = CosineWindow<T, 0.3635819, 0.4891775, 0.1365995, 0.0106411>;
class BlackmanWindow : public CosineWindow<T> {
public:
BlackmanWindow(typename Window<T>::size_type len, T i = 0) :
CosineWindow<T>(0.3635819, 0.4891775, 0.1365995, 0.0106411, 0., len, i) {}
};
} /* namespace dsp */
} /* namespace villas */