No single standard metric describes auditory intensity discrimination

Evidence

Intensity discrimination has been measured as a function of stimulus intensity for both tonal and noise stimuli, with surprising results. However, in order to fully understand and appreciate the results, we must consider the different ways of representing performance. A number of metrics are commonly used in the research literature, and a brief overview of them is provided here. Understandably, the use of multiple acoustic descriptors can be frustrating to a student, but it is often unclear to a researcher which metric is the best to describe auditory perception, as there is not always a standard unit to use. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 808