sound filtering

**Sound Filtering** refers to the process of selectively enhancing or reducing certain frequencies within an audio signal to improve sound quality or achieve a desired auditory effect. This technique is widely used in audio production, hearing aids, communication systems, and noise reduction technologies. Sound filtering can involve various methods such as low-pass, high-pass, band-pass, and notch filters, each designed to target specific frequency ranges for clearer, cleaner, or more focused sound output.