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When is the C-weighted decibel scale useful for measuring noise?
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noise pollution
Learn about the impact of underwater noise on marine animals, notably harbour porpoises.
The C-weighted decibel scale (dBC) is a specialized tool used in noise pollution measurement for specific acoustic conditions. It is particularly useful for assessing impact noise levels, such as those produced by gunfire.1
Additionally, the C-weighted scale is more accurate than the commonly used A-weighted scale (dBA) when measuring the perceived loudness of sounds that contain significant low-frequency components. While A-weighting is the standard for ambient community noise and workplace hearing protection, C-weighting provides a more representative measurement for sounds where low-frequency energy is a primary concern.12