This is a combine of RepVgg and HiFiGAN, which can fuse the MRF Block in the HiFiGAN. U can check the samples in samples

Important, it can speed up HiFiGAN_v1 about 2x times using one cpu, and with other tricks like MultiBand, ISTFTNet, IDWT, u can speed up to 4x times.

For example: HiFiGAN use 3, 7, 11 as the kernel sizes in the ResnetBlock, and using RepGAN, we only have one kernel size 11

u can use the official HiFiGAN or ParallelWaveGAN and replace the model using this.