Loudness Radar - Premiere Pro
From Help Wiki
The Loudness Radar is an audio effect that measures the loudness of the audio. It does not change the audio.
What is Loudness
Loudness is the perceived volume of an audio recording. The audio meters in Premier Pro measure the peak or instantaneous audio levels. The Loudness Radar measures the average level over time which is a better way to evaluate the overall loudness of a mix.