The last number controls the vocoder model during synthesis, which can use `0-4` to select the vocoder in {`pwgan`, `multi band melgan`, `style melgan`, `hifigan`, `wavernn`}
The last number controls the vocoder model during synthesis, which can use `0-4` to select the vocoder in {`pwgan`, `multi band melgan`, `style melgan`, `hifigan`, `wavernn`}