XiaoiceSing: A High-Quality and Integrated Singing Voice Synthesis System
Table 2: Objective evaluation results of different systems.
['[BOLD] Evaluation Item', '[BOLD] XiaoiceSing', '[BOLD] Baseline']
We further calculate some objective metrics including duration root mean square error (Dur RMSE), duration correlation (Dur CORR), F0 RMSE, F0 CORR, mel-cepstral distortion (MCD), band aperiodicity distortion (BAPD) and voiced/unvoiced error rate (V/UV error) to measure the quality of synthesized singing voice. It shows that XiaoiceSing achieves lower RMSE and higher CORR both in duration and F0 than baseline. Meanwhile, MCD, BAPD and V/UV error of XiaoiceSing are all lower than those of baseline. We can see that XiaoiceSing has a stronger ability to generate accurate phoneme duration, F0 and spectral features.