dBA (A-weighted decibels) is a unit of measurement that quantifies sound levels while considering the sensitivity of human hearing to different frequencies. This measurement adjusts the overall sound level to reflect how the human ear perceives noise, primarily emphasizing frequencies between 500 Hz and 6 kHz, where human hearing is most acute. This makes dBA a critical standard in assessing occupational noise exposure, as it aligns more closely with how noise affects workers in various environments.
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