A high-pass filter is an electronic circuit that allows signals with a frequency higher than a certain cutoff frequency to pass through while attenuating signals with lower frequencies. This type of filter is commonly used in audio processing, telecommunications, and image processing to remove unwanted low-frequency noise or to enhance high-frequency signals. In audio applications, a high-pass filter can help eliminate rumble or background noise, making the sound clearer. In image processing, it can enhance edges and fine details by removing low-frequency components, which often represent gradual changes in brightness. High-pass filters are essential tools in various fields, including signal processing and communications.