---
title: "Earplugs and White Noise Machines"
description: "Earplug decibel reduction ratings and how white noise machines use acoustic masking for sleep environments."
url: "https://bedguide.co.uk/environment/earplugs-and-white-noise/"
category: "environment"
primary_entity: "earplugs and acoustic masking"
date_published: 2026-08-03
date_modified: 2026-08-03
---

# Earplugs and White Noise Machines

> Earplugs reduce sound level at the ear canal. Ratings such as SNR or NRR estimate attenuation in decibels under test conditions. White, pink, and brown noise machines add a steady sound field that can mask intermittent noises. They raise the background so sudden sounds stand out less. Attenuation and masking are different strategies. Plugs lower level. Masking covers contrast.

Materials covered: foam earplugs, silicone earplugs, electronic noise machines, app-based noise generators.

## Two strategies for night noise

| Strategy | How it works | Limit |
| --- | --- | --- |
| Earplugs | Attenuate level at the ear | Fit-dependent; comfort varies |
| Acoustic masking | Raise steady background | Does not remove the original noise source |

## Using ratings carefully

Laboratory SNR/NRR values assume correct fit. Soft foam plugs need full expansion
in the canal. Flanged silicone plugs need a seal. Partial insertion overstates
real attenuation.

## Related BedGuide entries

- [Sleep masks](/environment/sleep-masks)
- [Cooling pads](/environment/cooling-pads-and-systems)

## Frequently asked questions

### What does SNR mean on earplugs?

SNR (Single Number Rating) is a European estimate of hearing protection attenuation in decibels under standardised test conditions. Real-world reduction depends on fit and correct insertion.

### Is white noise the same as silence?

No. White noise adds sound energy across frequencies. It can make sleep easier in noisy environments by masking, but it is not the absence of sound.

### White vs pink vs brown noise?

These labels describe different spectral slopes. White is flatter across frequency. Pink and brown emphasise lower frequencies more. Preference is individual.

---

Source: https://bedguide.co.uk/environment/earplugs-and-white-noise/ · BedGuide — educational encyclopedia, no affiliate commission. Facts checked against official sources where possible; see https://bedguide.co.uk/editorial-policy. Report an error: https://bedguide.co.uk/corrections.