JUCE: dsp::WindowingFunction< FloatType > Class Template Reference

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dsp::WindowingFunction< FloatType > Class Template Reference
juce_dsp » frequency

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

`#include <juce_Windowing.h>`

## 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. More...
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. More...
void | multiplyWithWindowingTable (FloatType *samples, size_t size) const noexcept
| Multiplies the content of a buffer with the given window. More...

## 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. More...
static const char * | getWindowingMethodName (WindowingMethod) noexcept
| Returns the name of a given windowing method. More...

## 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

## 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)

## ◆ 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)

## ◆ 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.

## ◆ getWindowingMethodName()

template<typename FloatType >

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

Returns the name of a given windowing method.

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

- juce_Windowing.h