WindowFunction Class Reference

FFT Window Function. More...

#include <FFTWindows.h>

Inheritance diagram for WindowFunction:

Public Member Functions
	WindowFunction ()=default
virtual void	begin (int samples)
	Setup the window function providing the fft length.
float	factor (int idx)
virtual const char *	name ()=0
int	samples ()
	Provides the number of samples (fft length)

Protected Member Functions
virtual float	factor_internal (int idx)=0
float	ratio (int idx)

Protected Attributes
const float	fourPi = 12.56637061f
int	i_half_samples = 0
int	i_samples = 0
float	samples_minus_1 = 0.0f
const float	sixPi = 18.84955593f
const float	twoPi = 6.28318531f

Detailed Description

FFT Window Function.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

WindowFunction()

WindowFunction ( )

default

Member Function Documentation

begin()

virtual void begin ( int  samples )

inlinevirtual

Setup the window function providing the fft length.

Reimplemented in BufferedWindow.

factor()

float factor ( int  idx )

inline

Provides the multipication factor at the indicated position. The result is symetrically mirrored around the center

factor_internal()

virtual float factor_internal ( int  idx )

protectedpure virtual

Implemented in Rectange, Hamming, Hann, Triangle, BufferedWindow, Nuttall, Blackman, BlackmanNuttall, BlackmanHarris, FlatTop, and Welch.

name()

virtual const char * name ( )

pure virtual

Implemented in Rectange, Hamming, Hann, Triangle, BufferedWindow, Nuttall, Blackman, BlackmanNuttall, BlackmanHarris, FlatTop, and Welch.

ratio()

float ratio ( int  idx )

inlineprotected

samples()

int samples ( )

inline

Provides the number of samples (fft length)

Member Data Documentation

fourPi

const float fourPi = 12.56637061f

protected

i_half_samples

int i_half_samples = 0

protected

i_samples

int i_samples = 0

protected

samples_minus_1

float samples_minus_1 = 0.0f

protected

sixPi

const float sixPi = 18.84955593f

protected

twoPi

const float twoPi = 6.28318531f

protected

---

The documentation for this class was generated from the following file:

• src/AudioTools/AudioLibs/FFT/FFTWindows.h