In the mean time all Interspeech 2021 videos have been made available https://www.superlectures.com/interspeech2021/tutorials

https://www.youtube.com/channel/UC2-z0HD4WpSbJONj73BgfwQ/videos

https://www.youtube.com/watch?v=-p_awLZWLeI

https://github.com/facebookresearch/vocoder-benchmark

VocBench from Facebook

Autoregressive vocoders: WaveNet, WaveRNN
GANs: Parallel WaveGAN, MelGAN
Diffusion: WaveGrad, DiffWave

All in one place with a common input-output interface with modern codebase from Facebook.

Might be useful for VC if it’s easy to make condition those vocoders using custom features.

Neural HMM: learns alignments fast

https://shivammehta007.github.io/Neural-HMM/

Promises to converge with 500 utterances, i couldn’t get it to work with that much data. I think with 2k utterances it should.

Prosody annotations for Switchboard: https://groups.inf.ed.ac.uk/switchboard/index.html

Neural Text to Speech Synthesis Tutorial

https://github.com/tts-tutorial/icassp2022

Survey paper: https://arxiv.org/abs/2106.15561

Convolutional Pitch Tracker (ICASSP 2018)

https://marl.github.io/crepe/

PyTorch port with lots of usage details: https://github.com/maxrmorrison/torchcrepe

Transformer-based sprocket successor, uses TTS pretraining. Available as egs/arctic/vc1 in ESPnet. Sounds much worse than sprocket.


http://www.kecl.ntt.co.jp/people/kameoka.hirokazu/Demos/vtn/index.html

Dealing with residual vocoder noise:

LogMMSE Speech Enhancement and Noise Reduction

https://github.com/rajivpoddar/logmmse

y_enh = logmmse(y, sr, output_file=None, initial_noise=1, window_size=160, noise_threshold=0.15)

StarGANv2-VC authors mentioned this method as one achieving highest MOS on VCC-2020 🤯

https://github.com/yl4579/StarGANv2-VC

I need to take a closer look at VTN

VTN is T23,

T10 is ASR and prosody encoder fed into speaker-dependent TTS fed into WaveNet with single Gaussian outputs. The alternative system of T10 was an autoregressive LSTM that converted PPG into melspc and was used for two male-male parallel speakers.

On AMP and HiFi-GAN: may need to remove the bias from convolution

https://prml-lab-speech-team.github.io/demo/FreGAN2/

A vocoder that uses discrete wavelet transform in the discriminator and has a progressive generator structure similar to StyleGAN2 that produce iDWT arguments

https://github.com/prml-lab-speech-team/demo/tree/master/FreGAN2/code