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triang

Triangular window

Description

w = triang(L) returns anL-point triangular window.

example

w = triang(L,typeName) specifies the option to return the windoww with single or double precision.

Examples

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Create a 200-point triangular window. Display the result usingwvtool.

L = 200;w = triang(L);wvtool(w)

Figure Window Visualization Tool contains 2 axes objects and other objects of type uimenu, uitoolbar, uipanel. Axes object 1 with title Time domain, xlabel Samples, ylabel Amplitude contains an object of type line. Axes object 2 with title Frequency domain, xlabel Normalized Frequency (\times\pi rad/sample), ylabel Magnitude (dB) contains an object of type line.

Input Arguments

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Window length, specified as a positive integer.

Note

If you specifyL as noninteger, the function rounds it to the nearest integer value.

Data Types:single |double |int8 |int16 |int32 |int64 |uint8 |uint16 |uint32 |uint64

Since R2024b

Output data type (class), specified as one of these:

  • "double" — Use this option to return a double-precision outputw.

  • "single" — Use this option to return a single-precision outputw.

Data Types:char |string

Output Arguments

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Triangular window, returned as a column vector.

Algorithms

The coefficients of a triangular window are:

ForL odd:

w(n)={2nL+11≤n≤L+122−2nL+1L+12+1≤n≤L

ForL even:

w(n)={(2n−1)L1≤n≤L22−(2n−1)LL2+1≤n≤L

References

[1] Oppenheim, Alan V., Ronald W. Schafer, and John R. Buck.Discrete-Time Signal Processing. Upper Saddle River, NJ: Prentice Hall, 1999.

Extended Capabilities

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C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Version History

Introduced before R2006a

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Thetriang function supports single-precision outputs.

MathWorksMathWorks

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