What is the purpose of filtering in the demodulation process?

The purpose of filtering in the demodulation process is to improve the quality of the received signal. During demodulation, the goal is to extract the original information from the modulated carrier wave. However, the received signal may contain various types of noise and interference that can distort the information being transmitted. By applying filtering techniques, these unwanted components are removed or minimized, allowing the desired signal to be more clearly identified and processed.

In this context, filtering enhances the clarity and reliability of the data being retrieved from the signal, ultimately leading to better performance in communication systems. This process is essential for maintaining the integrity of the information being transmitted over distances, ensuring that the receiver can accurately interpret the data.