Hearing tests
Audiograms, frequencies and decibels: how hearing is measured and what the results describe.
How to Read a Military Audiogram
What the axes, symbols and numbers on an audiogram mean, which frequencies military tests use, and why a chart shows thresholds but not their cause.
Last reviewed 24 August 2026What Is rM-NIHL? The Military Hearing Loss Diagnostic Method Explained
The military method for diagnosing noise-induced hearing loss: what it measures, why Abbott preferred it to CLB, its limits by age and sex, and M-NIHL60+.
Last reviewed 24 August 2026Speech-in-Noise Difficulty and Military Hearing Loss
Why you can hear in a quiet room but not a restaurant, what a pure-tone audiogram misses, how speech-in-noise tests work, and what Abbott v MoD decided.
Last reviewed 26 August 2026What Your Military Hearing Grade Means: H1, H2, H3 and H4
What H1, H2, H3 and H4 mean on a military medical record, the threshold sums behind each, and why an H grade is not a diagnosis or a compensation band.
Last reviewed 27 August 2026