Complex filtering

1. What is a complex filter?
2. What are the different types of filtering in computer?

What is a complex filter?

A complex filter is a two-input two-output linear network which. frequency response is not necessarily symmetrical with respect to. dc (ω = 0). Its gain and phase responses are functions both of the. frequency and the relative phase difference of the two real inputs.

What are the different types of filtering in computer?

Filters can be active or passive, and the four main types of filters are low-pass, high-pass, band-pass, and notch/band-reject (though there are also all-pass filters).