Interpret night-noise references without treating a browser estimate as a health test
Learn how WHO guidance describes night noise with defined A-weighted indicators, why individual responses vary, and why this browser tool cannot verify a bedroom against a health limit.
Different indicators answer different questions
Indoor bedroom reference
WHO community guidance has cited an indoor nighttime target measured as dBA with suitable equipment
Night environmental reference
WHO night guidance uses a long-term outdoor Lnight indicator, not a single browser reading
Short events and personal response
Maximum events, duration, source and individual sensitivity require separate evaluation
Common Bedroom Noise Sources
Quiet whisper
Often listed near 30 dB
Illustrative only; actual level depends on voice, distance and room
Refrigerator hum
Often listed near 40 dB
Constant low-level background noise
Air conditioner
Often listed across a wide range
Model, setting, distance and room acoustics change the result
Traffic noise
Highly dependent on location and traffic
Assess long-term exposure with an appropriate method when health or planning decisions depend on it
Sound Masking: White Noise vs Pink Noise
White Noise
Equal intensity across all frequencies, like static or a fan
Pink Noise
Deeper, more balanced sound like rainfall or rustling leaves
Recommendation: If you use masking sound, keep it comfortable and low. It adds sound rather than removing the source, and it is not a treatment for a sleep disorder.
Tips for a Quieter Bedroom
Identify Noise Sources
Use the instant estimate only for informal comparisons with the same device and position; use a suitable A-weighted instrument for an acoustic limit.
Soundproof Your Space
Use heavy curtains, weatherstripping, and door sweeps to block external noise.
Strategic Furniture Placement
Place bookshelves or wardrobes against noisy walls to absorb sound.
Use Sound Masking
Masking may make intermittent sound less noticeable, but keep its level low and do not treat it as source reduction.
Maintain HVAC Systems
Regular maintenance of air conditioners and fans reduces noise from these essential devices.
How Noise Affects Sleep Quality
Sleep Disruption: Environmental noise is associated with sleep disturbance, but effects depend on the exposure indicator, source, timing and individual response.
Deep Sleep Impact: Studies examine awakenings and sleep-stage changes using controlled methods; this page cannot diagnose an individual's sleep response.
Long-term Effects: Chronic exposure to nighttime noise is linked to increased stress hormones, cardiovascular issues, and cognitive impairment.
Individual Sensitivity: Some people are more sensitive to noise during sleep. Age, stress levels, and sleep disorders can increase sensitivity.
Health context comes from WHO environmental and night-noise guidance. Its indicators require defined measurement methods and are not equivalent to this tool's instant estimate. WHO environmental noise guidance · WHO Environmental Noise Guidelines
Compare Your Bedroom Setup
Use the instant estimate to compare the same device and position before and after a change. Do not use the result to certify a health guideline.
Start Measuring Now