What brown noise is
Brown noise - sometimes called red noise - is a random signal whose energy concentrates at low frequencies. Where white noise spreads energy evenly across the spectrum, brown noise rolls off the highs and emphasizes the deep end. The result is a warm, low rumble rather than a hiss: closer to a strong waterfall or heavy rain than to static. That deeper spectrum is exactly what makes it interesting for sleep.
Why brown noise masks snoring so well
Masking works when the covering sound has energy in the same frequencies as the disturbance. Snoring lives mostly in the low and mid frequencies - the rumble and saw-like buzz of vibrating throat tissue. Brown noise puts most of its power in that same range, so it covers snores efficiently at a comfortable volume. White noise, by contrast, spends much of its energy on high frequencies where snoring barely registers. Our white noise vs brown noise comparison breaks down the spectra in detail.
Brown noise in SnoreGuard AI
Brown noise is the default masking sound in SnoreGuard AI, and it is completely free. The app listens for snoring through your phone's microphone and fades brown noise into your earphones only while snoring is active - then back to silence when the room is quiet. That means you get snoring protection without sleeping in constant sound. Prefer something brighter? White noise is available on Premium, along with rain and ocean waves. The sleep guide covers how masking fits into a wider sleep routine.
Frequently asked questions
What does brown noise sound like?
Brown noise sounds like a deep, soft rumble - think of a strong waterfall, heavy rain on a roof, or distant thunder. Compared with the brighter hiss of white noise, brown noise feels warmer and less sharp, which is why many people find it easier to sleep with.
Is brown noise better than white noise for snoring?
Often, yes. Snoring energy is concentrated in low and mid frequencies, and brown noise puts most of its energy in exactly that range, so it overlaps and covers snores efficiently. White noise still works, but some of its masking power sits in high frequencies where snoring barely registers.
Can I play brown noise all night?
Yes, at a moderate volume brown noise is safe to play all night. With SnoreGuard AI you do not have to: the app plays brown noise only while snoring is detected, then fades it out, so you get the masking benefit with far less total noise exposure.