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INAs the pitch rises during a hearing test, there’s a moment where the sound seems to vanish completely. The tone is still playing, but your ears hit a frequency they can no longer detect, making it feel like the audio suddenly shut off.
This happens because the inner ear uses tiny hair cells inside the cochlea to detect different pitches. High frequency tones are often the first to disappear as those cells weaken or become damaged over time, especially from aging, loud environments, or years of headphone use. Since these cells do not regenerate, that upper range can gradually fade without you realizing it.
Tests like this estimate your “hearing age” by measuring where your high frequency cutoff begins compared to typical averages. It also helps explain why certain sharp sounds like birds chirping, electronic beeps, or consonants in speech can become harder to notice even when everything else still sounds normal.
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