1/f noise, also known as pink noise, is a type of signal or noise that has equal intensity across all octaves, meaning its power density decreases with increasing frequency. This results in a sound that is perceived as more balanced and less harsh compared to white noise, which has equal intensity at all frequencies. 1/f noise is commonly found in various natural systems, including electrical circuits, biological processes, and even music. The term "1/f" refers to the inverse relationship between frequency and amplitude, indicating that lower frequencies have higher amplitudes. This phenomenon is observed in many areas, such as stock market fluctuations and heartbeat rhythms, making it a subject of interest in fields like physics, engineering, and psychology.