WellnessfromEsquire4 days ago5 White Noise Machines That Will Make You Sleep BetterNoise colors differ by frequency emphasis: white is flat; pink emphasizes lows; brown deeper lows; blue/violet emphasize highs; green mid-range; gray matches perceived loudness.
MindfulnessfromWIRED6 months agoOur Sleep Expert Will Help You Find the Best Colored Noise for SlumberSound is color-coded based on frequency, with different colors representing various sound qualities.