"Green noise" has swept social media; TikTok users swear it's the key to a restful night's sleep.

“绿噪音”风靡社交媒体；TikTok 用户坚信这是一夜好眠的关键。

Unlike white noise, which contains all sound frequencies across the spectrum in equal measure, green noise refers to a particular variant of white noise. "Green noise is generally at or around a frequency of 500 Hz, " said Dr. Chris Winter, a neurologist and a sleep specialist. Sounds that seem like soft ocean waves, waterfalls and rivers all fall into the green noise category.

与包含声谱所有频率且各频率强度相等的白噪音不同，绿噪音属于白噪音的特定变体类型。神经学家兼睡眠专家克里斯·温特博士表示：“绿噪音的频率通常在 500 赫兹左右。”像轻柔的海浪声、瀑布声和河流声都属于绿噪音的范畴。

Sarah Silverman, a holistic sleep doctor, said, "When there's reduced high frequency sounds (like green noise), you may find that you're able to fall asleep faster or more easily."

综合睡眠医生萨拉·西尔弗曼说：“当高频声音减少时（如绿噪音），你可能会发现自己能够更快或更容易入睡。”

Each "color" of noise can serve a different purpose.

每种 “颜色” 的噪音都有不同的作用。

"Generally, white noise is composed of higher frequency sounds, and it can mask loud sounds, " Silverman said. "Pink and green noise tend to be softer, less harsh sounds and at lower frequencies." Brown noise is a bit lower and more erratic ― think thunder or more intense ocean waves.

西尔弗曼说：“一般来说，白噪音由更高频率的声音组成，它可以掩盖嘈杂的声音。粉色噪音和绿色噪音往往更柔和，声音没那么刺耳，而且频率较低。”棕色噪音频率更低且更不规则——比如雷声或更强烈的海浪声。

"White noise is often recommended for insomnia. Pink and green noise may be helpful for facilitating sleep onset based on your preference, " Silverman said.

“白噪音常被推荐用于治疗失眠。粉色和绿色噪音则可能根据个人偏好有帮助入眠。”西尔弗曼说。

Aside from using noise, prioritize other sleep-promoting habits.

除了使用噪音助眠之外，还应优先培养其他有助于睡眠的习惯。

Kristen Casey, a clinical psychologist and insomnia specialist, recommended deep breathing as a way to relax before bed, reducing electronic usage and dimming the lights to prepare yourself for a solid night's sleep.

临床心理学家兼失眠专家克里斯汀・凯西建议在睡前通过深呼吸放松身心，减少电子设备的使用，并调暗灯光，为深度睡眠做好准备。

Overall, green noise is not a prerequisite for a good night's sleep ― it's innocent enough to try, but it's not a one-size-fits-all solution.

总的来说，绿噪音并不是优质睡眠的必要条件——尝试无妨，但也并非万能解决方案。

At the end of the day, it comes down to personal preference and what you find most helpful.

归根结底，这还是取决于个人偏好以及你认为最有帮助的方法。