Three-alternative forced-choice method (3AFC) for tinnitus matching and digital frequency customized relieving sound (DFCRS) generation strategy for tinnitus management
Abstract
Tinnitus is the perception of sounds without any corresponding external stimulus exists, and it is one of the most common hearing disorders. Currently, there are no objective tests for tinnitus, and thus its detection relies on the subjective reports of patients. Here, we introduce a novel three-alternative forced-choice method (3AFC) for tinnitus pitch and loudness matching. Then, we modulate the soothing music by increasing the sound intensity of two 1/3 octave bands above and below the tinnitus frequency according to a specific algorithm to generate digital frequency customized relieving sound (DFCRS) for tinnitus management. Due to the relatively large frequency interval and more frequency characteristics, the 3AFC method can significantly shorten the time required for psychoacoustic measures of tinnitus and improve the efficiency and satisfaction of subjective tinnitus tests. Based on the matched tinnitus frequency, we created a personalized treatment plan for tinnitus patients using real-time modulation of soft music. We recruited total 32 participants who listened to the modulated music (DFCRS) or the unmodulated music (served as control) for at least 2 h a day for three months, following brief instructions from audiologists. Of these, the participants who received DFCRS experienced more reduced negative impacts of tinnitus and an improved quality of life compared to those in the control group, as measured by various scales. Our patented system seamlessly integrates tinnitus assessment and treatment, offering substantial savings in medical and audiological expenses.
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