Filters used for spectral analysis inevitably alter a signal’s time response.

Evidence

There is a problem, however, with filtering a signal in order to derive the spectrum and this is the effect of the filter on the time response of the sig­ nal. Most filters have a time response due to the fact that they do not allow Signal in Separated frequency components out Figure 1. — David Howard, Jamie Angus, coustics and Psychoacoustics, 471

Categorization

• XREF: connects to: Filtering a signal distorts its time response as well as its spectrum — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 473