KaiserWindow Class Reference

Kaiser window: A windower whose bandwidth and sidelobe height (signal-noise ratio) can be specified. More...

#include <KaiserWindow.h>

Classes
struct	Parameters

Public Member Functions
	KaiserWindow (Parameters p)
	Construct a Kaiser windower with the given length and beta parameter. More...
int	getLength () const
const double *	getWindow () const
void	cut (double *src) const
void	cut (const double *src, double *dst) const

Static Public Member Functions
static KaiserWindow	byTransitionWidth (double attenuation, double transition)
	Construct a Kaiser windower with the given attenuation in dB and transition width in samples. More...
static KaiserWindow	byBandwidth (double attenuation, double bandwidth, double samplerate)
	Construct a Kaiser windower with the given attenuation in dB and transition bandwidth in Hz for the given samplerate. More...
static Parameters	parametersForTransitionWidth (double attenuation, double transition)
	Obtain the parameters necessary for a Kaiser window of the given attenuation in dB and transition width in samples. More...
static Parameters	parametersForBandwidth (double attenuation, double bandwidth, double samplerate)
	Obtain the parameters necessary for a Kaiser window of the given attenuation in dB and transition bandwidth in Hz for the given samplerate. More...

Private Member Functions
void	init ()

Private Attributes
int	m_length
double	m_beta
std::vector< double >	m_window

Detailed Description

Kaiser window: A windower whose bandwidth and sidelobe height (signal-noise ratio) can be specified.

These parameters are traded off against the window length.

Definition at line 25 of file KaiserWindow.h.

Constructor & Destructor Documentation

KaiserWindow::KaiserWindow ( Parameters  p )

inline

Construct a Kaiser windower with the given length and beta parameter.

Definition at line 37 of file KaiserWindow.h.

References init().

Referenced by byBandwidth(), and byTransitionWidth().

Member Function Documentation

static KaiserWindow KaiserWindow::byTransitionWidth ( double  attenuation, double  transition  )

inlinestatic

Construct a Kaiser windower with the given attenuation in dB and transition width in samples.

Definition at line 43 of file KaiserWindow.h.

References KaiserWindow(), and parametersForTransitionWidth().

static KaiserWindow KaiserWindow::byBandwidth ( double  attenuation, double  bandwidth, double  samplerate  )

inlinestatic

Construct a Kaiser windower with the given attenuation in dB and transition bandwidth in Hz for the given samplerate.

Definition at line 53 of file KaiserWindow.h.

References KaiserWindow(), parametersForBandwidth(), and parametersForTransitionWidth().

KaiserWindow::Parameters KaiserWindow::parametersForTransitionWidth ( double  attenuation, double  transition  )

static

Obtain the parameters necessary for a Kaiser window of the given attenuation in dB and transition width in samples.

Definition at line 19 of file KaiserWindow.cpp.

References KaiserWindow::Parameters::beta, and KaiserWindow::Parameters::length.

Referenced by byBandwidth(), byTransitionWidth(), and parametersForBandwidth().

static Parameters KaiserWindow::parametersForBandwidth ( double  attenuation, double  bandwidth, double  samplerate  )

inlinestatic

Obtain the parameters necessary for a Kaiser window of the given attenuation in dB and transition bandwidth in Hz for the given samplerate.

Definition at line 72 of file KaiserWindow.h.

References parametersForTransitionWidth().

Referenced by byBandwidth(), and Resampler::initialise().

int KaiserWindow::getLength ( ) const

inline

Definition at line 79 of file KaiserWindow.h.

References m_length.

const double* KaiserWindow::getWindow ( ) const

inline

Definition at line 83 of file KaiserWindow.h.

References m_window.

void KaiserWindow::cut ( double *  src ) const

inline

Definition at line 87 of file KaiserWindow.h.

Referenced by Resampler::initialise().

void KaiserWindow::cut ( const double *  src, double *  dst  ) const

inline

Definition at line 91 of file KaiserWindow.h.

References m_length, and m_window.

void KaiserWindow::init ( )

private

Definition at line 54 of file KaiserWindow.cpp.

References bessel0(), m_beta, m_length, and m_window.

Referenced by KaiserWindow().

Member Data Documentation

int KaiserWindow::m_length

private

Definition at line 98 of file KaiserWindow.h.

Referenced by cut(), getLength(), and init().

double KaiserWindow::m_beta

private

Definition at line 99 of file KaiserWindow.h.

Referenced by init().

std::vector<double> KaiserWindow::m_window

private

Definition at line 100 of file KaiserWindow.h.

Referenced by cut(), getWindow(), and init().

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

• KaiserWindow.h
• KaiserWindow.cpp