This video describes analog and digital filters used in signal processing.

It explains the basics of simple analog filters and shows the filter characteristics of some digital filters, such as the Chebyshev filter and the elliptical filter.

This video is part of a training course from www.radartutorial.eu.

00:00 Intro, What is a filter?
00:32 Filter in electrical engineering and electronics
01:07 Tasks of a filter
01:52 Cut-off frequency
02:40 Low pass filter (LPF)
04:21 High pass filter (HPF)
05.04 Characteristics of an ideal filter
05:31 Real filter characteristics
06:10 Butterworth-Filter
07:04 What is a Filter Order?
07:37 Bandpass filter (BPF)
08:05 Gaussian filter
09:28 Band-stop filter
09:53 Digital Filters
10:55 Finite Impulse Response (FIR)
11:51 Infinite Impulse Response (IIR)
12:29 Chebyshev Filter
15:41 Elliptic filter