Loudness perception takes time to develop and so can be interrupted by later sounds

Evidence

Temporally partial masked loudness does not, of course, mean that we are able to listen into the future. Rather, the effect indicates that our hearing system needs some time to develop the sensation of loudness. The short tone burst produces a sensation that is not fully developed within the 5 ms of its presentation, but needs much more time. If, during that time, a strong uniform-exciting noise is presented, the development of the loudness of the short tone burst is interrupted. This means that the full development of loudness of the tone burst is partially reduced by the following noise. The development of sensations follows a rule well known in many other systems: the cause and its consequences are often non-simultaneous! — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1246

Categorization

• QUESTION: What mechanism underlies the temporal integration of loudness over roughly 100-200 ms? This connects to models of temporal summation of intensity.
• XREF: Temporal integration of loudness connects to the general psychophysical phenomenon of temporal summation seen in other sensory and perception literatures.