# BeamformerEig¶

class acoular.fbeamform.BeamformerEig

Beamforming using eigenvalue and eigenvector techniques, see Sarradj et al., 2005.

n = Int(-1, desc="No. of eigenvalue")

Number of component to calculate: 0 (smallest) … numchannels-1; defaults to -1, i.e. numchannels-1

calc(ac, fr)

Calculates the result for the frequencies defined by freq_data

This is an internal helper function that is automatically called when accessing the beamformer’s result or calling its synthetic() method.

Parameters: ac : array of floats This array of dimension ([number of frequencies]x[number of gridpoints]) is used as call-by-reference parameter and contains the calculated value after calling this method. fr : array of booleans The entries of this [number of frequencies]-sized array are either ‘True’ (if the result for this frequency has already been calculated) or ‘False’ (for the frequencies where the result has yet to be calculated). After the calculation at a certain frequency the value will be set to ‘True’ This method only returns values through the *ac* and *fr* parameters