Abstract
A follow up study was carried out of 12 patients using band-noise masker for 6 months to 3 years.Various auditory tests and measurements of tinnitus were performed before and after the long-term use of band-noise tinnitus masker: loudness balance, masking and pitch match tests.None of the 12 patients showed any remarkable changes in hearing at the 7 frequencies tested, from 125 to 8000Hz. Tinnitus frequency obtained by the pitch match method demonstrated no changes after long-term listening to band-noise. The contralateral loudness balance method indicated changes of tinnitus loudness; however, both the ipsilateral loudness balance method and the masking method showed no remarkable changes of tinnitus loudness after the long-term use of a tinnitus masker.We conclude that the long-term use of a band-noise masker has no effect on the pure tone threshold as long as close follow-up examinations are performed.
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