Scientists hope to find out if pink noise can enhance sleep and memory
White noise, a sound that can drown out background noise and increase sleep quality, has gained popularity in recent years as many people seek improved rest and focus. There's now growing interest in other coloured noises such as pink, brown and green noises. Scientists say sound consists of waves, similar to light. It can be described using colours based on the distribution of its frequencies just like light appears red at lower wavelengths, while it is more blue and violet at higher wavelengths. Thousands of people listen to these sounds on platforms like YouTube and through meditation apps....