An 16kHz implementation of HiFi-GAN for soft-vc.

Related tags

Deep Learning speech-synthesis voice-conversion pytorch-implementation
Overview

HiFi-GAN

An 16kHz implementation of HiFi-GAN for soft-vc.

Relevant links:

Example Usage

import torch
import numpy as np

# Load checkpoint
hifigan = torch.hub.load("bshall/hifigan:main", "hifigan_hubert_soft").cuda()
# Load mel-spectrogram
mel = torch.from_numpy(np.load("path/to/mel")).unsqueeze(0).cuda()
# Generate
wav, sr = hifigan.generate(mel)

Train

Step 1: Download and extract the LJ-Speech dataset

Step 2: Resample the audio to 16kHz:

usage: resample.py [-h] [--sample-rate SAMPLE_RATE] in-dir out-dir

Resample an audio dataset.

positional arguments:
  in-dir                path to the dataset directory
  out-dir               path to the output directory

optional arguments:
  -h, --help            show this help message and exit
  --sample-rate SAMPLE_RATE
                        target sample rate (default 16kHz)

Step 3: Download the dataset splits and move them into the root of the dataset directory. After steps 2 and 3 your dataset directory should look like this:

LJSpeech-1.1
│   test.txt
│   train.txt
│   validation.txt
├───mels
└───wavs

Note: the mels directory is optional. If you want to fine-tune HiFi-GAN the mels directory should contain ground-truth aligned spectrograms from an acoustic model.

Step 4: Train HiFi-GAN:

usage: train.py [-h] [--resume RESUME] [--finetune] dataset-dir checkpoint-dir

Train or finetune HiFi-GAN.

positional arguments:
  dataset-dir      path to the preprocessed data directory
  checkpoint-dir   path to the checkpoint directory

optional arguments:
  -h, --help       show this help message and exit
  --resume RESUME  path to the checkpoint to resume from
  --finetune       whether to finetune (note that a resume path must be given)

Generate

To generate using the trained HiFi-GAN models, see Example Usage or use the generate.py script:

usage: generate.py [-h] [--model-name {hifigan,hifigan-hubert-soft,hifigan-hubert-discrete}] in-dir out-dir

Generate audio for a directory of mel-spectrogams using HiFi-GAN.

positional arguments:
  in-dir                path to directory containing the mel-spectrograms
  out-dir               path to output directory

optional arguments:
  -h, --help            show this help message and exit
  --model-name {hifigan,hifigan-hubert-soft,hifigan-hubert-discrete}
                        available models

Acknowledgements

This repo is based heavily on https://github.com/jik876/hifi-gan.

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Comments
  • is pretrained weight of discriminator of base model available?

    is pretrained weight of discriminator of base model available?

    Thanks for nice work. @bshall

    I'm trying to train hifigan now, but it takes so long training it from scratch using other dataset.

    If discriminator of base model is also available, I could start finetuning based on that vocoder. it seems that you released only generator. Could you also release discriminator weights?

    opened by seastar105 3
  • NaN during training when using own dataset

    NaN during training when using own dataset

    While fine-tuning works as expected, doing regular training with a dataset that isn't LJSpeech would eventually cause a NaN loss at some point. The culprit appears to be the following line, which causes a division by zero if wav happens to contain perfect silence:

    https://github.com/bshall/hifigan/blob/374a4569eae5437e2c80d27790ff6fede9fc1c46/hifigan/dataset.py#L106

    I'm not sure what the best solution for this would be, as a quick fix I simply clipped the divisor so it can't reach zero:

    wav = flip * gain * wav / max([wav.abs().max(), 0.001])
    opened by cjay42 0
  • How to use this Vocoder with your Tacotron?

    How to use this Vocoder with your Tacotron?

    Thank you for your work. I used your Tacotron in your Universal Vocoding.The quality of the speech is excellent. However, the inference speed is slow. for that reason, I would like to use this hifigan as a vocoder. But Tacotron's n_mel is 80, while hifigan's n_mel is 128. How to use hifigan with Tacotron?

    opened by gheyret 0
Owner
Benjamin van Niekerk
PhD student at Stellenbosch University. Interested in speech and audio technology.
Benjamin van Niekerk
GitHub https://bshall.github.io/soft-vc/
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