Sleep Sounds: Color Noises, Nature Sounds, Binaural Beats & ASMR
Sleep sounds can help you fall asleep faster and rest more deeply, and there’s an option for nearly everyone.
Colored noises work mainly by masking disruptions:
- “White noise” covers all frequencies and is the best-studied for sound masking
- “Pink noise” is softer and may deepen slow-wave sleep and support memory (kept at low volume to protect REM)
- “Brown noise” offers a low, cozy rumble popular with ADHD
- “Green noise” mimics mid-range natural tones like streams.
Nature sounds — rain, waves, birdsong — go further by triggering the body’s relaxation response, lowering heart rate and calming the nervous system.
Binaural beats use slightly different tones in each ear to nudge brainwaves toward sleep states, while ASMR’s whispers and tapping can induce measurable relaxation.
Beyond sleep itself, these sounds may reduce anxiety and support long-term heart health. Safety matters too; keep volume at 30–40 decibels overnight, lower for children, and avoid wired headphones in bed.
What Is White Noise and How Does It Help You Fall Asleep?
White noise is a steady, consistent sound that blends all audible frequencies together; think of it like a soft, even “shhhh” that gently fills the room. What makes it so great for sleep is that it masks those sudden, jarring sounds — a car horn, a creaky floorboard, your neighbor’s dog — that tend to pull you out of rest just when you’re drifting off.
For even more information, check out our detailed breakdown of white noise on the BetterSleep blog.
What Is Pink Noise and How Can It Help You Sleep?
Pink noise is like white noise’s softer, warmer sibling. It still covers a wide range of frequencies, but it dials down the higher-pitched sounds and turns up the bass; so instead of a sharp hiss, you get something that sounds more like steady rainfall or rustling leaves.
That said, it’s worth keeping the volume on the lower side; a recent study found that playing it too loud could cut into your REM sleep.
What Is Brown Noise and How Can It Help You Get a Deep Sleep?
If pink noise is white noise’s softer sibling, then brown noise is the deep, cozy one. It emphasizes the lowest frequencies even more, producing a rich, rumbly sound; think a strong waterfall, distant thunder, or a heavy wind. It’s become hugely popular lately, especially among people with ADHD, who say it helps quiet a busy mind.
What Is Green Noise and How Can It Help You Sleep?
Green noise sits right in the mid-range frequencies, not too high, not too low, and ends up sounding a lot like the gentle, steady sounds you’d hear in nature: a flowing stream, soft ocean waves, or wind through trees.
Research shows that these kinds of nature-like sounds genuinely shift your body into relaxation mode, calming your heart rate and activating your parasympathetic nervous system.
Rain Sounds & Nature Sounds Collection
The sounds of nature have been proven time and time again to help people feel calm, regulated, and ready for a great night’s sleep.
In one randomized controlled clinical trial, significant improvement in sleep was found in patients who were exposed to natural sounds for 30 minutes before bed.
What is the Best Music for Sleep?
The best music for sleep is instrumental, with a slow tempo of 60–80 BPM that helps your heart rate and breathing naturally slow down through a process called entrainment.
Specialized Audio Therapy
Binaural Beats, a type of brainwave-inducing audio therapy that’s gained a lot of popularity in recent years, has been shown to promote relaxation and deep focus. Binaural beats are two very slightly different frequencies, each played into one ear, in order to influence brainwave activity.
ASMR (Autonomous Sensory Meridian Response) is a gentle tingling sensation that people may experience when tuning into certain types of soft audio tones or visuals. ASMR usually involves quiet sounds like shuffling, whispering, gentle tapping or clicking. This stimulates the brain, as well as the parasympathetic nervous system, and can actually help people feel more calm and relaxed.
What are the Health Benefits of Sleep Sounds?
Reduce Stress and Anxiety
Sleep sounds are a fantastic way to feel more calm during the day and at bedtime. A racing mind is one major culprit of anxiety, and having a mellow soundscape at your disposal can help your brain focus on one thing: the music.
Lower Heart Rate
Sleep sounds, most notably natural sounds like birdsong and running water, have been shown to reduce heart rate and promote a physiological sense of calm in people exposed to these therapies. When we sleep, our heart rate drops so that our bodies can enter “rest and digest” mode.
How to Choose the Right Sleep Sounds
Though it’s mostly a personal preference, here are our best tips to help you figure out what type of sleep sounds are right for you.
Environmental Considerations
When thinking about what sleep sounds suit you best, your home environment can play a role in your decision. Are you in the city where you might experience frequent disruptions from traffic or other sound pollution, or do you live in a quiet place with lots of natural nocturnal noises?
Age and Health Factors
For babies and children, who may require more nervous system regulation support than adults, playing ambient and soothing audio without lyrics can be especially advantageous. Teens and young adults may have better experiences with sounds like binaural beats, pink or green noise, and nature sounds such as flowing rivers or ocean waves. Older adults may be encouraged to listen to pink noise for its recognized memory-boosting effects.
Personal Preference
The choice of your sleep soundscape is highly individual. There’s no universal answer here because as humans, we’re all so unique!
Conclusion & Next Steps
Sleep sounds have been scientifically proven to help people in all aspects of sleep, from onset to quality. No matter your sleep goals, BetterSleep is here to launch your sleep process in the right direction.
Start your free trial of the BetterSleep app today and get on the path to the best sleep of your life!
Frequently Asked Questions About Sleep Sounds
What sounds help you sleep best?
Sleep sound preferences are personal, but the most widely used sounds are white noise and nature sounds (waves, rain, and gentle wind).
Do rain sounds actually help you sleep?
Yes, rain sounds have a calming effect on the brain and have been shown to improve sleep quality in adults.
What color sound is best for sleep?
There’s no best for everyone, but certain colors of noise have been specified to help with particular problems. For example:
- White noise is best for sound masking in noisy environments
- Pink noise is great for calm, restorative sleep
- Brown noise is comforting and cozy, making it another great choice for sleep.
- Green noise is a serene, natural sound that promotes relaxation, making it a favorite for various wellness practices.
Are sleep sounds safe for long-term use?
Sleep sounds are considered safe for long-term use, as long as the volume levels are regulated correctly. The WHO (World Health Organization) recommends keeping sleep sounds at a maximum of 40 decibels to prevent any problems over time.
Can sleep sounds help with anxiety?
Sleep sounds help reduce anxiety by targeting the parasympathetic nervous system.
What’s the difference between white noise and nature sounds?
White noise encompasses all frequencies of audible sound at once, making it a gently hissing, staticky sound. Nature sounds refer to any sound that could come from nature, and white noise’s close relative, green noise.
Do sleep sounds work for everyone?
No! But sleep sounds don’t work the same way for everyone, and oftentimes it’s about finding the right sleep sounds for you.
Can children use sleep sounds safely?
Children can certainly use sleep sounds safely, but with a few specifications. Volume levels should be kept in the 30-40 decibel range, so as not to damage their hearing.
