Like every other sound machine, the Nightingale fights noise with more noise—white, pink and brown noise, from what we can tell, plus some nature soundscapes for good measure. Some of these sound profiles are labeled based on the sleep-inhibiting affliction they're meant remedy, such as tinnitus and snoring. Others are simply based on the room type, like "adult bedroom," "kids room," or "hospital room." It's all a little confusing, since most people we know who use sleep machines simply settle on the noise color they like best and stick with it regardless of room type. You also get bevy of nature sounds, too, if that's your thing. You can choose from "Lakeshore," "Crickets," "Loons," "Whale Songs," and "Rainstorm."