High pass filters (HPF) allow frequencies above a specified cut-off point to pass while attenuating lower frequencies, making them useful in applications like audio processing and signal conditioning. Conversely, low pass filters (LPF) permit low frequencies to pass and attenuate higher frequencies, commonly used to eliminate high-frequency noise from signals. Both filters have a wide range of applications in electronics and signal processing. Additional resources, including detailed explanations and applications, can be found in the provided links. Understanding these filters is essential for effective signal manipulation in various fields.