Sound intensity is acoustic power per unit area, represented by the time-averaged energy-flux vector . Its direction gives the net direction of acoustic energy transport.
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Sound intensity is a measure of the power carried by sound waves per unit area. It quantifies how much sound energy passes through a specific area over a specified time. The intensity of sound is typically measured in watts per square meter (W/m²). In essence, sound intensity reflects how loud a sound is; higher intensity values correspond to louder sounds.