Understanding the Sound of White Noise

White noise is often described as a hissing or shushing sound, created by combining all audible frequencies of sound in equal amounts. It is called 'white noise' because it is analogous to white light, which contains an equal mix of all colors in the visible spectrum. This continuous, steady sound has the unique ability to mask other sounds in the environment, making it a popular choice to help with relaxation, sleep, and improving concentration. Examples of natural white noise include the sound of rain, a waterfall, or wind rustling leaves. In our modern world, the term 'white noise' is also used more broadly to refer to other types of noise that can have similar effects, such as pink noise or brown noise, each with a slightly different sound profile. White noise machines, apps, and websites are increasingly popular as useful tools for creating a calming and focused environment.