Howtosignalprocessing
Analog filtering involves physical hardware that alters analog signals before they are passed off to other components to be processed. Digital filtering involves passing analog data to a processor that then runs code to digitally filter the data.
- What are advantages of digital filters over analog filters?
- What is meant by digital filtering?
- What are analogue filters used for?
What are advantages of digital filters over analog filters?
Digital filters have the following advantages compared to analog filters: Digital filters are software programmable, which makes them easy to build and test. Digital filters require only the arithmetic operations of addition, subtraction, and multiplication.
What is meant by digital filtering?
In signal processing, a digital filter is a system that performs mathematical operations on a sampled, discrete-time signal to reduce or enhance certain aspects of that signal. Digital filters can often be made very high order, and are often finite impulse response filters which allows for linear phase response.
What are analogue filters used for?
Analogue filters are most often used in wave filtering applications, that is, where it is required to pass particular frequency components and to reject others from analogue (continuous-time) signals. Analogue filters have played an important part in the development of electronics.
