Since using brown noise with SINE, I fall asleep in under 10 minutes. The cutoff filter makes a huge difference. I found my perfect sound.
— - Lisa T.
SleepNoise Generator
Brown Noise Went Viral. Now You Can Shape It.
Millions discovered it on TikTok. Thousands with ADHD call it life-changing. But a YouTube loop isn't enough. SINE generates brown, pink, and white noise in real-time, with LFO modulation, cutoff filters, and frequency layering.
+350k
★★★★★
Used by thousands daily
The Trend
From TikTok into millions of bedrooms.
2023-2025: Brown noise went from a niche topic to mainstream. Millions of TikTok views. Thousands of ADHD sufferers call it life-changing.
Millions of Views
Brown noise has been one of the most searched sleep topics on TikTok and YouTube since 2023.
ADHD Favorite
The ADHD community adopted brown noise as a focus tool. Organically, with no marketing.
Sleep Revolution
Sleep physicians increasingly recommend noise therapy as a non-pharmaceutical alternative.
7 days free
No credit card
Cancel anytime
GDPR compliant
Data stays private
Noise Colors
3 Colors. 3 Effects. You Choose.
Each noise color has a different frequency spectrum. The right choice depends on what you need and how your brain responds.
Brown NoiseLow frequencies dominant
Deep rumble, like a powerful waterfall
Energy drops sharply as frequency rises. This creates a warm, enveloping sound bed that calms the mind without stimulating it. Brown noise has been shown to activate the parasympathetic system and lower heart rate.
Best for: Deep sleep, ADHD focus, blocking distractions
Pink NoiseEqual energy per octave
Balanced, like steady rain
The most natural noise color. Pink noise mimics many natural sounds and is the most pleasant to the human ear. Studies show: pink noise during sleep can extend the slow-wave phase and improve memory.
Best for: Light sleep, relaxation, studying
White NoiseEqual energy at all frequencies
Sharp hiss, like static or a fan
Maximum broadband energy. White noise masks disruptive sounds most effectively because it covers all frequencies equally. The classic choice for noise-sensitive people and tinnitus sufferers.
Best for: Masking sounds, tinnitus relief, concentration
ADHD
Why ADHD Brains Love Brown Noise
ADHD brains constantly seek stimulation. When the environment is too quiet, the brain creates its own distractions: wandering thoughts, restlessness, the urge to get up. Brown noise delivers exactly the right amount of sensory input: enough to occupy the brain, but not enough to distract.
The low frequencies have a particularly calming effect on the nervous system. Since 2023, brown noise has gone viral on TikTok, with millions of views and a growing community using it as a daily tool. SINE takes it further: customizable filters and LFO modulation let you find exactly the noise that works for your brain.
The TikTok Effect: What started as a trend is now a staple of ADHD self-help. No medication, no therapist. Just deep noise that brings the mind to rest.
The Engine
Not just noise. A sound design tool.
Instead of playing a loop, you shape the sound in real-time.
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Noise That Breathes.
Low frequency oscillation lets the noise gently pulse. Louder, then softer, like ocean waves. Never static, never boring. Your brain detects no repetition, because there is none.
LFO Modulation=
Shape the Sound for Your Brain.
Control which frequencies get through. Turn the cutoff down for a deep rumble, up for a bright hiss. Find the exact sweet spot that calms your nervous system.
Cutoff Filter+
Combine Noise with Binaural Beats.
Layer brown noise over a 2 Hz delta frequency for deep sleep. Or pink noise over an 18 Hz beta beat for focus. The combination is stronger than any single component.
Frequency LayeringO
Noise That Surrounds You.
Position sound in space. Noise from the left, rain from the right, frequencies from the center. 46 ambient sounds in 3D, for an experience that goes beyond headphones.
3D Spatial Audio8
No Loops. Never Identical.
SINE generates noise in real-time at 44,100 samples per second, mathematically computed. No pre-recorded audio that repeats. Your brain stays relaxed because it detects no patterns.
Infinite GenerationThe Difference
Real-Time Synthesis vs. YouTube Loops
YouTube, Spotify & Other Apps
- ✕10-hour loops: your brain detects the repetition
- ✕MP3 compression alters the frequency spectrum
- ✕No customization: you get what someone uploaded
- ✕No filters, no LFO, no modulation
- ✕Ads interrupt your sleep (YouTube Free)
- ✕No layering with frequencies possible
SINE
- ✓Real-time synthesis: never identical, never loop-based
- ✓Uncompressed: full frequency spectrum preserved
- ✓Cutoff filter: shape the noise for your brain
- ✓LFO modulation: living, breathing noise
- ✓No ads, no interruptions. Ever.
- ✓Layer noise with binaural beats and ambient sounds
Experiences
What Users Are Saying
As someone with ADHD, I've tried dozens of noise apps. SINE is the only one that lets me truly shape the noise. LFO on low, cutoff down, and my brain is finally quiet.
— - Markus K.
ADHDBrown noise plus 10 Hz alpha beat. That's my focus setup for work. 4 hours of concentration without a break. Nothing else has worked like this.
— - Thomas R.
FocusFAQ
Frequently Asked Questions
What is brown noise?
Brown noise (also Brownian noise) has stronger energy at low frequencies. It sounds like a deep rumble, similar to a strong waterfall, distant thunder, or wind against a window. The higher the frequency, the less energy. The result: a warm, enveloping sound that calms the mind.
Is brown noise better than white noise for sleep?
For most people, yes. Brown noise has significantly more low frequencies and sounds less harsh than white noise. That makes it more pleasant for extended listening and less likely to wake you up. The best choice is individual though. SINE lets you test all three in real-time and even mix them.
Which noise color is best for ADHD?
Brown noise is most popular for ADHD. The low frequencies provide enough sensory input to calm the constantly seeking ADHD brain without becoming a distraction themselves. Pink noise is a good alternative if brown sounds too deep. In SINE, you can use the cutoff filter to find the exact sweet spot.
Is it safe to sleep with noise all night?
Yes, at moderate volume. Keep the volume below 60 dB (about conversation level). SINE generates noise in real-time, so there are no loops or sudden volume changes that could disturb sleep. Sleep physicians recommend steady noise as one of the safest non-pharmaceutical sleep aids.
What is the difference between brown, pink, and white noise?
White noise has equal energy at all frequencies (sounds like a sharp hiss). Pink noise has equal energy per octave (sounds balanced, like rain). Brown noise loses energy as frequency increases (sounds like a deep rumble). Rule of thumb: the 'warmer' the color, the more low frequencies and the more calming the sound.
Ready?
Your brain knows which noise it needs. Give it the choice.
7 days free. No credit card. Brown, pink, or white, shaped in seconds.
7 days free
No credit card
Cancel anytime