5 White Noise Machines That Will Make You Sleep Better
Noise 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.
Sound Machines Can Be a Game-Changer For Light Sleepers-Here Are Our Tested Picks
White noise machines produce different noise colors—white, pink, brown—that affect sleep differently; portable and kid-safe options exist with volume and distance recommendations.
