dsp::WindowingFunction< FloatType > Class Template Reference

A class which provides multiple windowing functions useful for filter design and spectrum analyzers. More...

Public Types
enum	WindowingMethod {   rectangular = 0 , triangular , hann , hamming ,   blackman , blackmanHarris , flatTop , kaiser ,   numWindowingMethods }
	The windowing methods available. More...

Public Member Functions
	WindowingFunction (size_t size, WindowingMethod, bool normalise=true, FloatType beta=0)
	This constructor automatically fills a buffer of the specified size using the fillWindowingTables function and the specified arguments.
void	fillWindowingTables (size_t size, WindowingMethod type, bool normalise=true, FloatType beta=0) noexcept
	Fills the content of the object array with a given windowing method table.
void	multiplyWithWindowingTable (FloatType *samples, size_t size) const noexcept
	Multiplies the content of a buffer with the given window.

Static Public Member Functions
static void	fillWindowingTables (FloatType *samples, size_t size, WindowingMethod, bool normalise=true, FloatType beta=0) noexcept
	Fills the content of an array with a given windowing method table.
static const char *	getWindowingMethodName (WindowingMethod) noexcept
	Returns the name of a given windowing method.

Detailed Description

template<typename FloatType>
class dsp::WindowingFunction< FloatType >

A class which provides multiple windowing functions useful for filter design and spectrum analyzers.

The different functions provided here can be used by creating either a WindowingFunction object, or a static function to fill an array with the windowing method samples.

Member Enumeration Documentation

WindowingMethod

template<typename FloatType>

enum dsp::WindowingFunction::WindowingMethod

The windowing methods available.

Enumerator
rectangular
triangular
hann
hamming
blackman
blackmanHarris
flatTop
kaiser
numWindowingMethods

Constructor & Destructor Documentation

WindowingFunction()

template<typename FloatType>

dsp::WindowingFunction< FloatType >::WindowingFunction	(	size_t	size,
		WindowingMethod	,
		bool	normalise = true,
		FloatType	beta = 0 )

This constructor automatically fills a buffer of the specified size using the fillWindowingTables function and the specified arguments.

See also

fillWindowingTables

Referenced by getWindowingMethodName().

Member Function Documentation

fillWindowingTables() [1/2]

template<typename FloatType>

void dsp::WindowingFunction< FloatType >::fillWindowingTables ( size_t size, WindowingMethod type, bool normalise = true, FloatType beta = 0 )

noexcept

Fills the content of the object array with a given windowing method table.

Parameters

size	the size of the destination buffer allocated in the object
type	the type of windowing method being used
normalise	if the result must be normalised, creating a DC amplitude response of one
beta	an optional argument useful only for Kaiser's method which must be positive and sets the properties of the method (bandwidth and attenuation increases with beta)

Referenced by fillWindowingTables().

fillWindowingTables() [2/2]

template<typename FloatType>

static void dsp::WindowingFunction< FloatType >::fillWindowingTables ( FloatType * samples, size_t size, WindowingMethod , bool normalise = true, FloatType beta = 0 )

staticnoexcept

Fills the content of an array with a given windowing method table.

Parameters

samples	the destination buffer pointer
size	the size of the destination buffer allocated in the object
normalise	if the result must be normalised, creating a DC amplitude response of one
beta	an optional argument useful only for Kaiser's method, which must be positive and sets the properties of the method (bandwidth and attenuation increases with beta)

References fillWindowingTables().

multiplyWithWindowingTable()

template<typename FloatType>

void dsp::WindowingFunction< FloatType >::multiplyWithWindowingTable ( FloatType * samples, size_t size ) const

noexcept

Multiplies the content of a buffer with the given window.

References multiplyWithWindowingTable().

Referenced by multiplyWithWindowingTable().

getWindowingMethodName()

template<typename FloatType>

static const char * dsp::WindowingFunction< FloatType >::getWindowingMethodName ( WindowingMethod )

staticnoexcept

Returns the name of a given windowing method.

References getWindowingMethodName(), JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR, and WindowingFunction().

Referenced by getWindowingMethodName().