![]() Multiple studies have examined how pink noise may be used to enhance sleep quality. ![]() Not only did this system help participants fall asleep faster, but it also helped them reach deep sleep earlier. In a more recent study, researchers programmed a pink noise audio track to decrease in volume as people transitioned into sleep. One early study found that playing steady pink noise at 60 decibels - more or less the volume of a refrigerator - helped participants fall asleep faster. Steady pink noise may help people relax for sleep by masking bothersome sounds. Moreover, pink noise does not appear to cause any strong side effects when played at a reasonable volume. Initial studies have found pink noise may help people fall asleep faster and obtain better deep sleep. Because pink noise resembles many sounds in everyday life, therapists often use pink noise as a tool to treat hearing disorders and tinnitus, or ringing in the ears. Urban noises such as traffic are also said to be similar to pink noise. Pink noise is often compared to water and nature sounds, such as: For example, one study found that participants became less stressed after listening to pink noise, compared with the typical sounds of an intensive care unit. Pink noise is often used as a background or control noise because research has found that it is less distracting than other types of noise. Researchers have observed patterns similar to pink noise in short segments of birdsong, as well as in some urban soundscapes. Pink noise is prevalent in nature sounds, like wind and rain, and many songs or segments of speech contain elements of pink noise. Pink noise is often considered more relaxing than white noise, since it does not sound as high-pitched. Another name for pink noise is 1/f noise, which describes the way its power is inversely related to its frequency.īecause of the way the human ear works, people perceive pink noise as having a pleasant-sounding, balanced volume across frequencies. Specifically, pink noise contains the same overall intensity in each octave, but the volume of individual pitches decreases by 3 decibels with each higher octave. Pink noise is a sound that contains a random assortment of all the audible frequencies, with more power in the lower frequencies. We discuss what pink noise is, how it compares to other types of noise, and the potential benefits of pink noise for sleep. Most people are familiar with the concept of white noise, but emerging research indicates a lesser-known type of noise called pink noise may also have benefits for sleep. Many people use sound to block out external noises, in the hopes that it might help them fall asleep faster or improve their sleep quality.
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