is the representation of each individual part of an overall sound displayed to indicate their portion of the final loudness created. For example, we could split a music track into different instruments which still make up the loudness level when put back together.

LOUDNESS SUMMATION: "Individual sounds may not be a problem for an individual, however, through loudness summation, the true loudness level of the environment may become clear."
Cite this page: N., Pam M.S., "LOUDNESS SUMMATION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/loudness-summation/ (accessed February 28, 2021).