The property of sound that is measured in decibels (dB) is its intensity or sound level (often described as how loud the sound is).

Quick Scoop

  • Decibels are used to express the intensity level of a sound, not its pitch or speed.
  • Intensity is related to the power of the sound wave per unit area and corresponds to how loud a sound is perceived.
  • The decibel scale is logarithmic, which makes it convenient for handling the huge range between very soft and very loud sounds.

So, if a question asks, “What property of sound is measured in decibels?”, the correct answer is: sound intensity (loudness).

TL;DR: Decibels measure the intensity or loudness of sound, not its frequency or wavelength.

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