Quietude · Guides

Quietude guides

Short, sourced guides about noise, quiet, sleep and concentration.

• How quiet should a room be for studying?
  About 35 dB, the level classroom standards aim for. Why speech and lyrics hurt focus most.
• Does white noise help you focus?
  Small help for people with ADHD, small harm for everyone else. What a 2024 meta-analysis found.
• Decibel chart: how loud are everyday sounds?
  From a 30 dB whisper to a 120 dB siren, and how long each level is safe to hear.
• Does noise affect your sleep?
  The WHO night limits for road, rail and aircraft noise, and what they mean for your bedroom.

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