5.2.2. Subjective Results

The preference scores of SERGAN and the progressive generator with multi-scale discriminator were shown in Figure 4b. The proposed method was preferred over SERGAN in 42.00% of the cases, while SERGAN was preferred in 26.31% of the cases (no preference in 31.69% of the cases). These results showed that the proposed method could enhance the speech with better objective metrics and subjective perceptual scores.
