Auto Power Spectrum VI

Owning Palette: Spectral Analysis VIs

Requires: Multicore Analysis and Sparse Matrix Toolkit

Computes the auto power spectrum of a time-domain signal X. For a real input signal, the power spectrum can be either single-sided or double-sided. For a complex input signal, the power spectrum is double-sided.

Wire data to the X input to determine the polymorphic instance to use or manually select the instance.

Details  

Auto Power Spectrum (DBL)

	power spectrum type specifies whether the output Power Spectrum is single-sided or double-sided. 0 Single-sided (default) 1 Double-sided
	X specifies the input time-domain signal.
	dt specifies the sample period of X, usually in seconds. Set dt to 1/fs, where fs is the sampling frequency of the time-domain signal X. The default is 1.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	Power Spectrum returns the power spectrum of X.
	df returns the frequency interval of the power spectrum, in hertz, if dt is in seconds.
	error out contains error information. This output provides standard error out functionality.

Auto Power Spectrum (SGL)

	power spectrum type specifies whether the output Power Spectrum is single-sided or double-sided. 0 Single-sided (default) 1 Double-sided
	X specifies the input time-domain signal.
	dt specifies the sample period of X, usually in seconds. Set dt to 1/fs, where fs is the sampling frequency of the time-domain signal X. The default is 1.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	Power Spectrum returns the power spectrum of X.
	df returns the frequency interval of the power spectrum, in hertz, if dt is in seconds.
	error out contains error information. This output provides standard error out functionality.

Auto Power Spectrum (CDB)

	X specifies the input time-domain signal.
	dt specifies the sample period of X, usually in seconds. Set dt to 1/fs, where fs is the sampling frequency of the time-domain signal X. The default is 1.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	Power Spectrum returns the power spectrum of X.
	df returns the frequency interval of the power spectrum, in hertz, if dt is in seconds.
	error out contains error information. This output provides standard error out functionality.

Auto Power Spectrum (CSG)

	X specifies the input time-domain signal.
	dt specifies the sample period of X, usually in seconds. Set dt to 1/fs, where fs is the sampling frequency of the time-domain signal X. The default is 1.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	Power Spectrum returns the power spectrum of X.
	df returns the frequency interval of the power spectrum, in hertz, if dt is in seconds.
	error out contains error information. This output provides standard error out functionality.

Auto Power Spectrum Details

The following table lists the support characteristics of this VI.

Supported on RT targets	Yes
Suitable for bounded execution times on RT	Yes

This VI computes the double-sided power spectrum using the following equation.

where, P_double is the double-sided Power Spectrum and n is the size of X.

To compute the single-sided power spectrum, this VI converts the double-sided power spectrum to the single-sided form.