When Celeste was playing her stereo at 40 decibels and she turned it up to 44 decibels,she could notice that it was louder.Based on this information you could predict that if Celeste has her stereo playing at 80 decibels,her just noticeable difference for loudness would be
A) 4 decibels, the same as it was at 40 decibels.
B) 2 decibels, half as much as it was at 40 decibels.
C) impossible to determine without more information.
D) 8 decibels, twice as much as it was at 40 decibels.

Question

Quizplus · Accepted Answer

The just noticeable difference (JND) for loudness typically increases with the intensity of the sound. Since Celeste noticed a difference at 4 decibels at 40 decibels, it is likely that at 80 decibels, the JND would be approximately twice as much, or 8 decibels.

When Celeste Was Playing Her Stereo at 40 Decibels and She