Fig. 2.

A schematic presentation of the hearing rehabilitation training (HRT) protocol. The HRT program consisted of face-to-face training and self-home training with three interviews with an ENT doctor. A 30-minute face-to-face training was conducted once a week for 8 weeks, with the first 4-week period involving constant discrimination retraining and weeks 5–8 focusing on identification and understanding training. At the same time, patients were taught to perform self-home training every day at home. In the training process, the 10 most commonly used Korean consonants were used for training, starting with low-frequency consonants and gradually progressing to high-frequency consonants. The doctor’s role during our HRT program was to interview the patient three times (HRT prescription, reinforcement, and final motivation for self-HRT). AV, auditory-visua; AO, auditory-only.