Generates a vector of a Welch window of a given length.

Syntax

W = WelchWin(Length, Type)

Argument

Name

Description

Length

A positive integer specifying the length of the window.

Type

A string. ‘periodic’ or ’symmetric’ (default). See Comments.

Output

Name

Description

W

Vector containing the window of a specified length.

Example

A Hanning window of length 32.

Syntax

W = WelchWin(32)

Result

W will be a 32 element vector.

Comments

When Type = ’symmetric’, the vector is symmetric about its median. This case is appropriate for time domain processing, as when using an FIR filter.

When Type = ’periodic’, the vector contains the first Length points of a (Length+1) symmetric vector. This case is appropriate for frequency domain processing, as when using BlockFft.

See Also:

ChebyWin

HammWin

HannWin

BlackmanWin

ParzenWin