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Understanding Sound Intensity and Loudness: Key Differences Explained

Learn about the concepts of sound intensity and loudness, how they are related, and why they are perceived differently by human listeners. Discover the factors that influence the loudness of a sound and how intensity is measured. Clear explanations make this topic easy to grasp.

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Understanding Sound Intensity and Loudness: Key Differences Explained

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  1. Sound Intensity and Loudness

  2. Intensity and Loudness • The intensity of a sound is the time rate at which sound energy flows through a unit area normal to the direction of propagation.

  3. Loudness • The loudness of a sound depends on an auditory intensity in the consciousness of a human listener.

  4. Similarity • An increase in the intensity of a sound of fixed frequency causes it to seem louder to the listener.

  5. Difference • Intensity of a sound can be directly measured by instruments but loudness cannot as it depends on the listener.

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