For example, they may have ripple on their pass-band or they may have a flat transition band, etc.įilters can typically be categorized by shape as follows: For example, a low-pass filter is a filter that passes low-frequency inputs and blocks high-frequency ones and etc.įilters also come in different shapes. What each one is capable is hinted at in their name. Theory Types of Filtersįilters can be categorized into one of five groups according to their band class. ![]() Let's start by discussing some differences between types of filters. We can also determine the non-linearity of a system by filtering its output at certain frequencies. ![]() It provides us with an opportunity to extract the desired signal buried underneath a lot of noise. In this article, we'll briefly explore different types of filters and then learn how to implement a moving average filter and optimize it with CIC architecture.įiltering is very important in many designs.
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