Factors affecting subjective tinnitus pitch and tinnitus tonality were analyzed with the use of the quantitative method II. Ninety-one patients with unilateral tinnitus of a single kind were studied. Major factors affecting subjective tinnitus pitch were pitch matched frequency, age, puerility and impurity of tinnitus tonality, and loudness of tinnitus. In addition, major factors affecting puerility and impurity of tinnitus tonality were pitch matched frequency, loudness of tinnitus, and nature of the test tone. Furthermore, subjective puerility of tinnitus was associated with middle-pitched frequency and high-pitched frequency, and a loudness level of tinnitus between 25 and 49 dB HL. Whereas impurity of tinnitus was related to low-pitched frequency and noise of the test tone. These results may contribute to the clinical evaluation of tinnitus.
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