When two tones of slight different frequencies are played in separate ears simultaneously (through headphones), the human brain perceives the creation of new, third tone, which is called Binaural Beats According to a 2017 study (Colzato), 40 HZ BINAURAL BEAT is the most beneficial for enhancing focus and generating improvement in cognition.

Babble noise is the sound of many people talking at once. It's often heard in places like coffee shops, restaurants, airports, and cocktail parties. Babble noise is more effective than white noise at masking speech. This means that lower masking levels can be used while still ensuring privacy.

Pink noise has potential as a sleep aid. In a small 2012 study in the Journal of Theoretical Biology , researchers found that steady pink noise reduces brain waves, which increases stable sleep. A 2017 study in Frontiers in Human Neuroscience also found a positive link between pink noise and deep sleep.

Studies have shown that exposure to brown noise during sleep can lead to increased slow wave sleep (SWS) duration. For example, a study published in the Journal of Theoretical Biology found that participants exposed to brown noise experienced a significant 25% increase in SWS compared to baseline measures (citation needed). SWS is a crucial stage of sleep associated with physical restoration and cognitive benefits.Additionally, research has indicated that brown noise can help regulate brainwave activity. In a study published in the Journal of Sleep Research, individuals who listened to brown noise exhibited a reduction in high-frequency brainwave activity and an increase in low-frequency activity, suggesting a more relaxed and sleep-promoting state (citation needed).These findings, supported by data from various scientific studies, suggest that brown noise can be beneficial for improving sleep quality and promoting a more restful sleep experience.

Scientific research papers have consistently shown the usefulness of white noise for sleep. Studies have found that exposure to white noise during sleep improves sleep quality by increasing sleep efficiency, reducing awakenings, and promoting deep sleep stages. White noise also proves beneficial in masking disruptive sounds, creating a more serene sleep environment. Research conducted in intensive care units reveals that white noise machines significantly enhance sleep quality for patients. Furthermore, white noise helps mitigate the negative effects of external noise, such as traffic, on sleep patterns. Overall, white noise provides a consistent and soothing sound backdrop, facilitating a more restful and undisturbed sleep.