Brown Noise

Brown noise (also called Brownian or red noise) emphasizes even lower frequencies, producing a deep, rumbling sound like thunder or a waterfall. The strong bass frequencies create a cocooning effect that many find deeply calming for anxiety and restlessness. Studies indicate brown noise may be particularly effective for people who find white noise too harsh or stimulating. Its low-frequency dominance can help mask bass-heavy disturbances like traffic or HVAC systems. Many users with ADHD report improved focus with brown noise. Best for: deep relaxation, anxiety relief, masking low-frequency disturbances, ADHD support.