Regular ad hoc filters don’t guarantee optimal signal filtering as there is no any criteria that evaluates filter characteristics. Usually filter parameters are calculated empirically and filtering is done by best results.
In order to avoid such shortage there are optimal filters used where parameters are optimized by some criteria. The main idea of optimal filtering [...]

Second order DSP filter is more complex than first order filters. There is one more delay block (z-1) added. Function diagram of second order DSP filter.

The equation for second order DSP Filter can be written as follows:

And transfer function expressed in Z transform would be:

There can be two particular cases of filter. If we can [...]

Signal filter is electrical equipment that attenuates the unwanted signal characteristic wave. Filters can be analog or digital.
An analog filter processes analog signals. They are mainly arranged with capacitors and resistors.
Digital signal filters process digital signals which are quantized. Digital filters are arranged with solid state components to process the signals.
Let’s start from analog [...]