Buzzing in the ears during quiet times is a sign that tinnitus sufferers have lost the environmental noise as a natural masking sound, and the tinnitus sound appears to be prominent.
When the outer hair cells in one part of the cochlea are damaged, the normal hair cells in their neighborhood will intensify their electro-mechanical action in an attempt to compensate for it, and tinnitus occurs when the energy of the compensatory activity exceeds the normal threshold.
Natural sounds (rain, waves, running water, etc.), music, songs, comic songs, etc. interfere with the tinnitus stimulation of the auditory center and divert attention. As a result, many tinnitus sufferers notice a reduction or disappearance of tinnitus in noisy environments.
The mechanism of tinnitus under quiet conditions once again dominates auditory perception, so the ear perceives a buzzing sound. This type of tinnitus is often characteristic of neurogenic tinnitus.