Loudness balancing measures loudness by matching a test sound’s level to a reference

Evidence

Other methods are also commonly used to assess loudness, with a matching, or loudness balancing, procedure being one of the easiest to implement and interpret. In this procedure, rather than measure the relative loudness of a sound using a rating procedure, the level of a sound is adjusted so that its loudness matches that of a reference sound. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 742

Categorization

• DEFINE: Defines the loudness balancing/matching procedure as adjustment-based rather than rating-based.