Low pass filters allow signals with a frequency lower than a certain cutoff frequency to pass through while attenuating higher frequencies, making them useful in audio processing and signal smoothing. High pass filters do the opposite, allowing high-frequency signals to pass and blocking lower frequencies, which is beneficial in applications like noise reduction and audio equalization. Both types of filters are essential in electronic circuits and signal processing for managing frequency response. Their applications span various fields, including telecommunications, audio engineering, and image processing. Understanding their features and applications is crucial for effective signal manipulation.