What is deep white noise?
Deep white noise starts from the same flat, random signal as white noise, which holds equal power per hertz, and filters most of its high end away. This preset runs the signal through a low-pass filter at about 780 Hz and a second one at 1.4 kHz, so everything above the low midrange falls away steeply while the range below keeps white noise’s flat, even level. What is left is a low, rushing roar with no hiss.
In the Veil app you reach it from white noise’s tuning controls: Brightness set to Muted and Texture set to Calm. It is the same generator and the same two independent buffers as the standard white noise player; only the two filters differ.
Deep white noise output by frequency
Sounds likeA distant waterfall, an airplane cabin at cruise, a large fan across the room.
Try it forCovering hum and low background noise without any hiss, or when soft white noise still sounds bright.
Skip it ifVoices or sharp sounds are the problem. Most of the energy that covers them has been filtered out.
What white noise may help mask
A steady background can reduce the contrast between a quiet room and an intermittent sound. Try it during a work or study session if nearby conversations distract you, or at bedtime if changing background sounds are the problem. Whether it helps is personal; more volume is not automatically better.
If the hiss is distracting, compare pink noise for a softer high end or brown noise for a deeper sound. Keep whichever feels comfortable at a low volume. White noise is a listening tool, not a treatment for sleep or attention difficulties.
How loud should you set it?
Start with your device volume low, then use the player slider to find the lowest comfortable level that makes the disturbance less noticeable. The percentage on the slider is not a decibel reading: the output also depends on your device, speaker and distance.
If the noise itself feels intrusive, turn it down or try a different color. Read the guide to choosing a masking volume for a practical starting point.
How this generator actually works
This player generates its audio on your device with the Web Audio API, using a port of the generator in Veil. It does not stream a recording or download an audio track.
The source is the same raw uniform random noise. Before playback it passes through two one-pole low-pass filters, at 780 Hz (Brightness) and 1.4 kHz (Texture), the same filters the app applies, and each loop join is crossfaded against the filtered continuation so the filter state carries across it.
Two independently generated buffers, about 30 and 37 seconds long, play together with crossfaded loop boundaries. Their lengths are chosen to avoid a short shared repetition period. This is designed for continuous listening without an obvious repeating join.
What the research says
A small 2021 study of ten New Yorkers who reported noise-related sleep difficulty found improvements in some sleep measures during one week with a white noise device. It does not show that white noise helps everyone. Read the study on PubMed.
A 2014 measurement study found that some infant sleep machines could produce potentially harmful levels when used at maximum volume close to a crib. That supports careful placement and the lowest useful volume. Read the study on PubMed.
Standard, soft or deep: which white noise should you use?
All three come from the same generator; only the Brightness and Texture settings differ. The right one depends on your speaker and your room, so hear them at your real sleeping volume before deciding.
- Standard when the room is genuinely loud: the full spectrum puts the most energy where voices and sharp sounds sit.
- Soft when standard white noise feels sharp or tiring, for low volumes and small speakers.
- Deep for low, steady noise such as traffic hum, or when even the soft preset sounds bright.
Open the standard white noise player or the soft preset, compare deep brown noise for a heavier rumble, or hear all six noise colors side by side.
Common questions.
What is deep white noise?
How is this different from the regular white noise player?
How is deep white noise different from brown noise?
Will it cover a loud room?
Is this deep white noise generator free?
Created by Colin Hanson, maker of Veil. The player uses the same procedural audio approach as the Veil app.