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並前往https://ec.europa.eu/health/scientific_committees/opinions_layman/en/hearing-loss-personal-music-player-mp3/figtableboxes/figure-13.htm

Low and high-pitched sounds appear less loud to the human ear

Low and high-pitched sounds appear less loud to the human ear. Low and high-pitched sounds appear less loud to the human ear. Source: GreenFacts.

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