Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Sound intensity refers to the amount of energy carried by sound waves and is typically measured in decibels (dB). It represents the power or strength of sound, determining its loudness.
Related terms
Threshold of Hearing: The threshold of hearing is the minimum sound intensity level required for a person to detect a sound. It represents the lowest possible volume that can be heard.
Threshold of Pain: The threshold of pain is the maximum sound intensity level beyond which sound becomes painful or damaging to our ears. It represents the point at which loud sounds become uncomfortable or harmful.
Sound Pressure Level: Sound pressure level (SPL) is another term used to measure sound intensity. It quantifies how much air pressure changes due to the presence of sound waves and is also measured in decibels.