A decibel (dB) is a logarithmic unit used to measure the intensity of sound, expressing the ratio of a particular sound pressure level to a reference level. This measurement allows us to quantify how loud a sound is in relation to others, which is crucial when discussing the effects of infrasound on humans and structures. The scale is not linear; an increase of 10 dB represents a tenfold increase in intensity, making it a powerful tool for understanding sound levels that can impact our environment.
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