Restructure pf.dsp.regularized_spectrum_inversion

[f-brinkmann]

General

• pyfar version: 0.5.2

Description

We discussed that function in its current form is a bit too complicated. It has a special case of a regularization function implement through freq_range, etc. and a general case through regu_final. We decided to refactor the function on the long run:

• move the regularization function generated by freq_range et al. to a separate function/class
• always require to pass a regularization function to pf.dsp.regularized_spectrum_inversion
• regularization function must be passed as FrequencyDataobject