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It is well-known that high intensity level and continuous environment noise (e.g., noise in a concrete factory) induce a high-frequency hearing loss which frequently accompanies "ringing" in the ear. ...The abnormal auditory perception is called tinnitus, defined as "the sensation of sound without external stimulation (ANSI, 1969)." As tinnitus is a subjective experience, it is hard for other people to know the exact characteristics of tinnitus sounds. Since Fowler (1941) developed a method to match pitch and loudness of the perceived tinnitus sound, many studies have been reported that used an audiometer to measure the acoustic characteristics of the tinnitus. However, it has been very difficult to investigate the fine characteristics of tinnitus sounds because an audiometer has limitations in the number of pure tone frequencies and the bandwidths of noise. Hazel (1981) attempted to match the perceived tinnitus sound in 200 patients using a music synthesizer. Although near matches were achieved, it was never possible to imitate the tinnitus sound. In the present study, we propose a new tinnitus test based on interactive evolutionary computation (IEC). This method optimizes the process of automatic test-tone selection for probing the acoustic characteristics of The patient's tinnitus. The method is based on the patient's evaluation. The utility of the tinnitus test using IEC was investigated for normal hearing subjects with a monaural, pseudo-tinnitus tone.続きを見る
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Mendeley出力
IntConf106