👉 Filtering engineering is a crucial aspect of signal processing and communication systems that involves the design and implementation of algorithms and hardware to remove unwanted noise, interference, or distortions from signals. It aims to enhance signal quality by selectively allowing certain frequency components or signal features to pass through while attenuating others. This process is essential in various applications, from telecommunications and audio processing to radar and medical imaging, ensuring that the transmitted or received signals are as clean and accurate as possible for optimal performance and reliability. Filtering techniques can be linear or non-linear, discrete-time or continuous-time, and they often involve mathematical operations such as convolution, Fourier transforms, and digital signal processing methods to achieve the desired filtering effect.