What kind of filter is this?

1. What is the type of filter?
2. What are the five types of filtering?

What is the type of filter?

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).

What are the five types of filtering?

These filter types include low-pass, high-pass, band-pass, band-stop (band-rejection; notch), or all-pass. They are either active or passive.