Range effects and re-calibration in loudness determinations

Loudness evaluations seem to be influenced by the range of stimuli presented to the subjects during a listening session. This context phenomenon is sometimes called re-calibration. A literature study has been made on this topic and a few pilot listening tests have also been performed. This work was performed during a two-month stay for Torben Poulsen at Communication Research Laboratory, Northeastern University, Boston. The investigation is related to the ongoing research on temporal integration of loudness as a function of level.