Hearing
How loud is too loud, and how to read a hearing test to look after your hearing.
Why safe listening is a dose of loudness and time, the 85 dBA workplace limit and the WHO's 80 dB for 40 hours a week, how each 3 dB halves your safe time, and how to follow your exposure.
November 4, 2026 · 3 min read
What the frequencies and decibels on a hearing test chart mean, how the pure-tone average is worked out, the WHO's grades of hearing loss, and how to compare tests over the years.
November 4, 2026 · 3 min read
Why noise damage shows first as a notch between 3,000 and 6,000 Hz that recovers at 8,000 Hz, how it differs from age-related loss, and what to do if you see one.
November 4, 2026 · 2 min read