When Celeste was playing her stereo at 40 decibels and she turned it up to 42 decibels,she could notice that it was louder.If Celeste's stereo were playing at 80 decibels,what should her just noticeable difference be

Question

Quizplus · Accepted Answer

According to Weber's Law, the just noticeable difference is proportional to the original stimulus. In this case, if Celeste could notice a difference of 2 decibels when the stereo was playing at 40 decibels, then the just noticeable difference when it's playing at 80 decibels should be twice as much, which is 4 decibels. Therefore, the best choice is D.

When Celeste Was Playing Her Stereo at 40 Decibels and She