This is a PyTorch reimplementation of MelNet.

Implementation seems to be reasonably working. I'm using 2x2080Ti (which was a huge investment on my part) to train the network. Even then, I did not have enough GPU memory to run the network with the hyperparameters the paper has set out to use. I've used NVIDIA's apex in order to fit wider networks into the GPUs, and I got reasonable results for:

• Batchsize: 16, Width: 64, Hop Length: 256, Timesteps: 384, Sample Rate: 16384 (~5 seconds of audio).
• Batchsize: 8, Width: 128, Hop Length: 256, Timesteps: 384, Sample Rate: 16384 (~5 seconds of audio).

The codebase for now lacks the Centralised Stack. (Please contribute!)

This has been accommodated for the maestro dataset from Google only; please contribute if you are looking to implement the TTS version of MelNet.

This implementation utilises apex.parallel.DistributedDataParallel module and torch.multiprocessing in order to train on multiple GPUs. Please see the implementation details if you are looking for a way to run a PyTorch processes for each GPU.

I haven't decided on the license of the code here. For now, CC BY-SA policy applies while I decide whether I want this to be GPL or MIT, etc.

I've invested quite a bit of time into hardware while writing this reimplementation; if you were to use it, please consider a donation. As always, contributions are welcome.