sigwin.triang class

Package: sigwin

Construct triangular window object

Description

sigwin.triang is a triangular window object.

sigwin.triang creates a handle to a triangular window object for use in spectral analysis and FIR filtering by the window method. Object methods enable workspace import and ASCII file export of the window values.

For L odd, the triangular window is defined as:

w(n)={2nL+11n(L+1)/222nL+1(L+1)/2+1nL

For L even, the triangular window is defined as:

w(n)={(2n1)L1nL/22(2n1)LL/2+1nL

Construction

H = sigwin.triang returns a triangular window object H of length 64.

H = sigwin.triang(Length) returns a triangular window object H of length Length. Entering a positive non-integer value for Length rounds the length to the nearest integer. Entering a 1 for Length results in a window with a single value of 1.

Properties

Length

Triangular window length. The window length requires a positive integer. Entering a positive non-integer value for Length rounds the length to the nearest integer. Entering a 1 for Length results in a window with a single value of 1.

Methods

generateGenerates triangular window
infoDisplay information about triangular window
winwriteSave triangular window in ASCII file

Copy Semantics

Handle. To learn how copy semantics affect your use of the class, see Copying Objects in the MATLAB® Programming Fundamentals documentation.

Examples

Default length L = 64 triangular window:

H=sigwin.triang;
wvtool(H); 

Generate length L = 128 triangular window, return values, and write ASCII file:

H=sigwin.triang(128);
% Return window with generate
win=generate(H);
% Write ascii file in current directory
% with window values
winwrite(H,'triang_128')

References

Oppenheim, A.V., and Schafer, R.W. Discrete-time Signal Processing, Upper Saddle River, N.J: Prentice Hall, 1989, pp. 444–447.

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