Power spectrum
Purpose
Description
Macro Synopsis
Modules
Related Functions
Purpose
Power spectrum
Description
"Power spectrum" computes the power spectrum or power spectral density 
according to the Wiener-Khintchine theorem
of the given signal x, where 
denotes the Autocorrelation function of x.
Internally, the power spectrum is computed by performing a Fast Fourier Transform within a window slided along the signal.
Parameters of "Power spectrum" are
- window length N in samples
- window overlap M in samples.
Note: The type of window function and type of Fast Fourier Transform can be adjusted in the Basic Options menu under Fourier.
Warning: Note that y(0) is suppressed in order to avoid its large values dominating the result.
Macro Synopsis
y = PowerSpect(x,N,M);
signal x,y;
int N,M;
Modules
Spectral
Related Functions
Amplitude spectrum, Phase spectrum.