Pink noise, brown noise, green noise, and other colorful variations are becoming popular alternatives to white noise for relaxation. Pink noise, which has a lower pitch and resembles natural sounds like rain or ocean waves, is gaining attention. While the science behind color noises is still emerging, studies suggest potential benefits for conditions such as ADHD and tinnitus.
White noise is the most common of the color noises, similar to static on a radio or TV. It has equal volume across all audible frequencies, hence the name “white.” However, the high frequencies of white noise can be harsh. Pink noise reduces the volume of these higher frequencies, resulting in a lower pitch that sounds more natural, like rain or ocean waves. Brown noise, even lower in pitch, has a soothing rumble.
Recent studies indicate that white noise and pink noise may offer minor benefits for individuals with attention-deficit/hyperactivity disorder (ADHD). According to ADHD researcher Joel Nigg from Oregon Health & Science University, these noises stimulate the brain without providing distracting information. White noise is also used to alleviate tinnitus, a condition characterized by ringing or buzzing in the ears.
Researchers at Northwestern University are exploring how short bursts of pink noise can enhance slow brain waves during deep sleep. Preliminary studies have shown promising results in improving memory and the relaxation response. Pink noise has a frequency profile that closely aligns with the brain wave frequencies observed during slow-wave sleep, making it a potential tool for enhancing sleep and memory.
While the research on color noises is encouraging, there are still many unanswered questions. Dr. Roneil Malkani, an assistant professor of neurology at Northwestern University Feinberg School of Medicine, emphasizes the need for further investigation before developing medical devices that utilize personalized pulses of pink noise.
Using color noises like pink noise to drown out distractions and promote relaxation is generally safe. However, it is essential to keep the volume at a reasonable level to prevent hearing loss. Taking breaks to allow your ears to rest is also advisable, according to experts.
In conclusion, the use of pink noise and other color noises for improving sleep, concentration, and relaxation response shows promise based on current research. While there is still much to learn about the efficacy and safety of these techniques, they may offer benefits for individuals with ADHD, tinnitus, and sleep-related issues. As the science continues to evolve, incorporating color noises into daily routines may become a common practice for enhancing overall well-being.