A high-pass filter is a tool used in audio processing and electronics that allows high-frequency signals to pass through while blocking lower frequencies. This means that sounds like cymbals or high-pitched vocals can be heard clearly, while deeper sounds, such as bass, are reduced. High-pass filters are commonly used in music production to create a cleaner mix by removing unwanted low-end noise. In photography, a high-pass filter can enhance image sharpness. By emphasizing the edges and fine details, it helps to make photos look crisper. This technique is often used in editing software to improve the overall quality of images, making them more visually appealing to viewers.