Calculate PSD of a signal using Welch algorithm

Version 1.0.0.0 (1.96 KB) by Roni Peer
A short function I've revised a long time ago to calculate the PSD of a signal.
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Updated 29 Dec 2011

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This function Calculates Power Spectral Density of signal vector X using Welch's averaged periodogram method.
X is divided into sections, then windowed by the WINDOW parameter.
The magnitude squared of the length NFFT DFTs of the sections are averaged to form Pxx. Pxx is length NFFT/2+1 for NFFT even. the default fot WINDOW is a rectangular window .
Fs is the sampling frequency which is used for scaling of plots.

Original Author(s): T. Krauss, 3-26-93
Copyright (c) 1984-94 by The MathWorks, Inc.
Revised by: Roni P, 10.8.01

Cite As

Roni Peer (2024). Calculate PSD of a signal using Welch algorithm (https://www.mathworks.com/matlabcentral/fileexchange/34383-calculate-psd-of-a-signal-using-welch-algorithm), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R13
Compatible with any release
Platform Compatibility
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Version Published Release Notes
1.0.0.0