PyTorch Implementation of Google Brain's WaveGrad 2: Iterative Refinement for Text-to-Speech Synthesis

Related tags

Deep Learningaudiotext-to-speechdurationend-to-endpytorchttsspeech-synthesisrobustsynthesisneural-ttsnon-autoregressivetext-to-audioscore-matchingphoneme-to-waveform
Overview

WaveGrad2 - PyTorch Implementation

PyTorch Implementation of Google Brain's WaveGrad 2: Iterative Refinement for Text-to-Speech Synthesis.

Status (2021.06.22)

  • Working on

Quickstart

Dependencies

You can install the Python dependencies with

pip3 install -r requirements.txt

Inference

You have to download the pretrained models and put them in output/ckpt/LJSpeech/.

For English single-speaker TTS, run

python3 synthesize.py --text "YOUR_DESIRED_TEXT" --restore_step 900000 --mode single -p config/LJSpeech/preprocess.yaml -m config/LJSpeech/model.yaml -t config/LJSpeech/train.yaml

The generated utterances will be put in output/result/.

Batch Inference

Batch inference is also supported, try

python3 synthesize.py --source preprocessed_data/LJSpeech/val.txt --restore_step 900000 --mode batch -p config/LJSpeech/preprocess.yaml -m config/LJSpeech/model.yaml -t config/LJSpeech/train.yaml

to synthesize all utterances in preprocessed_data/LJSpeech/val.txt

Controllability

The speaking rate of the synthesized utterances can be controlled by specifying the desired duration ratios. For example, one can increase the speaking rate by 20 % by

python3 synthesize.py --text "YOUR_DESIRED_TEXT" --restore_step 900000 --mode single -p config/LJSpeech/preprocess.yaml -m config/LJSpeech/model.yaml -t config/LJSpeech/train.yaml --duration_control 0.8

Training

Datasets

The supported datasets are

  • LJSpeech: a single-speaker English dataset consists of 13100 short audio clips of a female speaker reading passages from 7 non-fiction books, approximately 24 hours in total.
  • (will be added more)

Preprocessing

First, run

python3 prepare_align.py config/LJSpeech/preprocess.yaml

for some preparations.

As described in the paper, Montreal Forced Aligner (MFA) is used to obtain the alignments between the utterances and the phoneme sequences. Alignments for the LJSpeech datasets are provided here (thanks to ming024's FastSpeech2). You have to unzip the files in preprocessed_data/LJSpeech/TextGrid/.

After that, run the preprocessing script by

python3 preprocess.py config/LJSpeech/preprocess.yaml

Alternately, you can align the corpus by yourself. Download the official MFA package and run

./montreal-forced-aligner/bin/mfa_align raw_data/LJSpeech/ lexicon/librispeech-lexicon.txt english preprocessed_data/LJSpeech

or

./montreal-forced-aligner/bin/mfa_train_and_align raw_data/LJSpeech/ lexicon/librispeech-lexicon.txt preprocessed_data/LJSpeech

to align the corpus and then run the preprocessing script.

python3 preprocess.py config/LJSpeech/preprocess.yaml

Training

Train your model with

python3 train.py -p config/LJSpeech/preprocess.yaml -m config/LJSpeech/model.yaml -t config/LJSpeech/train.yaml

TensorBoard

Use

tensorboard --logdir output/log/LJSpeech

to serve TensorBoard on your localhost.

Implementation Issues

  1. Use 22050Hz instead of 24KHz and follow general LJSpeech configurations.
  2. Add nn.ReLU() activation at the end of the duration predictor to force the value positive.
  3. Follow the Aligher of EATS: End-to-End Adversarial Text-to-Speech for the Gaussian upsampling, rather than that of Non-Attentive Tacotron.

Citation

@misc{lee2021wavegrad2,
  author = {Lee, Keon},
  title = {WaveGrad2},
  year = {2021},
  publisher = {GitHub},
  journal = {GitHub repository},
  howpublished = {\url{https://github.com/keonlee9420/WaveGrad2}}
}

References

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Comments
  • About gaussian up-sampling

    About gaussian up-sampling

    Hi @keonlee9420 , you have mentioned you don't use Non-Attentive Tacotron's upsampling rather prefer EATS upsampling, is there some specific reason for that ? Also what's the inference speed of WaveGrad v2 on cpu ?

    opened by rishikksh20 1
  • samplingwindow correct, range param masked_fill with small value

    samplingwindow correct, range param masked_fill with small value

    Mask fill the range with non zero value solved the range problem. (It was for our case, Should be tested for this case) In sampling window, pad with sliced one.

    opened by Seungwoo0326 0
Releases(v1.0.0)
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Keon Lee
Expressive Speech Synthesis | Conversational AI | Open-domain Dialog | NLP | Generative Models | Empathic Computing | HCI
Keon Lee
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