GAN Vocoders

This is a brief introduction of GAN Vocoders, we mainly introduce the losses of different vocoders here.

Model

Generator Loss

Discriminator Loss

Mel GAN

adversial loss
Feature Matching

Multi-Scale Discriminator

Parallel Wave GAN

adversial loss
Multi-resolution STFT loss

adversial loss

Multi-Band Mel GAN

adversial loss
full band Multi-resolution STFT loss
sub band Multi-resolution STFT loss

Multi-Scale Discriminator

HiFi GAN

adversial loss
Feature Matching
Mel-Spectrogram Loss

Multi-Scale Discriminator
Multi-Period Discriminator