dsp.Window Class Reference

Provides common window (tapering) functions More...

Public Types
enum	Type {   Type.Rectangular, Type.Blackman, Type.Hamming, Type.Hann,   Type.Triangular, Type.FlatTop }
	Window function enumeration types More...

Static Public Member Functions
static double []	Blackman (int samples, bool periodic)
	Returns a Blackman window More...
static double []	FlatTop (int samples, bool periodic)
	Returns a flat-top window More...
static double []	Hamming (int samples, bool periodic)
	Returns a Hamming window More...
static double []	Hann (int samples, bool periodic)
	Returns a Hann (raised cosine) window More...
static double []	Rectangular (int samples)
	Returns a rectangular window More...
static double []	Triangular (int samples)
	Returns a triangular window More...

Detailed Description

Provides common window (tapering) functions

Member Enumeration Documentation

Type

enum dsp.Window.Type

strong

Window function enumeration types

Enumerator
Rectangular	Rectangular Window Type
Blackman	Blackman Window Type
Hamming	Hamming Window Type
Hann	Hann Window Type
Triangular	Triangular Window Type
FlatTop	FlatTop Window Type

Member Function Documentation

Blackman()

static double [] dsp.Window.Blackman ( int  samples, bool  periodic  )

static

Returns a Blackman window

For a symmetric window the number of samples should be an odd number.

Parameters

samples	window size
periodic	True for periodic, False for symmetric

Example

double[] A = Window.Blackman(7, false);
A = NArray.Round(A, 8);
Console.WriteLine(NArray.ToString(A));

0   0.13   0.63   1   0.63   0.13   0

FlatTop()

static double [] dsp.Window.FlatTop ( int  samples, bool  periodic  )

static

Returns a flat-top window

For a symmetric window the number of samples should be an odd number.

Parameters

samples	window size
periodic	True for periodic, False for symmetric

Example

double[] A = Window.FlatTop(7, false);
A = NArray.Round(A, 8);
Console.WriteLine(NArray.ToString(A));

-0.00042105   -0.05126316   0.19821053   1   0.19821053   -0.05126316   -0.00042105

Hamming()

static double [] dsp.Window.Hamming ( int  samples, bool  periodic  )

static

Returns a Hamming window

For a symmetric window the number of samples should be an odd number.

Parameters

samples	window size
periodic	True for periodic, False for symmetric

Example

double[] A = Window.Hamming(7, false);
A = NArray.Round(A, 8);
Console.WriteLine(NArray.ToString(A));

0.08   0.31   0.77   1   0.77   0.31   0.08

Hann()

static double [] dsp.Window.Hann ( int  samples, bool  periodic  )

static

Returns a Hann (raised cosine) window

For a symmetric window the number of samples should be an odd number.

Parameters

samples	window size
periodic	True for periodic, False for symmetric

Example

double[] A = Window.Hann(7, false);
A = NArray.Round(A, 8);
Console.WriteLine(NArray.ToString(A));

0   0.25   0.75   1   0.75   0.25   0

Rectangular()

static double [] dsp.Window.Rectangular ( int  samples )

static

Returns a rectangular window

Parameters

samples

window size

Triangular()

static double [] dsp.Window.Triangular ( int  samples )

static

Returns a triangular window

Parameters

samples

window size

Example

double[] A = Window.Triangular(7);
A = NArray.Round(A, 8);
Console.WriteLine(NArray.ToString(A));

0.25   0.5   0.75   1   0.75   0.5   0.25