Pytorch Implementation of DiffSinger: Diffusion Acoustic Model for Singing Voice Synthesis (TTS Extension)

Related tags

Deep Learningtext-to-speechpytorchttsspeech-synthesisenglishdiffusionsinging-voicediffusion-modelsneural-ttsnon-autoregressivefastspeechddpmdiffsinger
Overview

DiffSinger - PyTorch Implementation

PyTorch implementation of DiffSinger: Diffusion Acoustic Model for Singing Voice Synthesis (TTS Extension).

Status (2021.06.03)

  • Naive Version of DiffSinger
  • Shallow Diffusion Mechanism: Training boundary predictor by leveraging pre-trained auxiliary decoder + Training denoiser using k as a maximum time step

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 160000 --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 160000 --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 pitch/volume/speaking rate of the synthesized utterances can be controlled by specifying the desired pitch/energy/duration ratios. For example, one can increase the speaking rate by 20 % and decrease the volume by 20 % by

python3 synthesize.py --text "YOUR_DESIRED_TEXT" --restore_step 160000 --mode single -p config/LJSpeech/preprocess.yaml -m config/LJSpeech/model.yaml -t config/LJSpeech/train.yaml --duration_control 0.8 --energy_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 from 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. The loss curves, synthesized mel-spectrograms, and audios are shown.

Implementation Issues

  1. Pitch extractor comparison (on LJ001-0006.wav)

    pyworld is used to extract f0 (fundamental frequency) as pitch information in this implementation. Empirically, however, I found that all three methods were equally acceptable for clean datasets (e.g., LJSpeech) as above figures. Note that pysptk would work better for noisy datasets (as described in STYLER).

  2. Stack two layers of FFTBlock for the lyrics encoder (text encoder).

  3. (Naive version) The number of learnable parameters is 34.337M, which is larger than the original paper (26.744M). The diffusion module takes a significant portion of whole parameters.

  4. I did not remove the energy prediction of FastSpeech2 since it is not critical to the model training or performance (as described in LightSpeech). It should be easily removed without any performance degradation.

  5. Use HiFi-GAN instead of Parallel WaveGAN (PWG) for vocoding.

Citation

@misc{lee2021diffsinger,
  author = {Lee, Keon},
  title = {DiffSinger},
  year = {2021},
  publisher = {GitHub},
  journal = {GitHub repository},
  howpublished = {\url{https://github.com/keonlee9420/DiffSinger}}
}

References

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Comments
  • Training Error

    Training Error

    In this case, , i ran the scripts python3 train.py -p config/vietnam/preprocess.yaml -m config/vietnam/model.yaml -t config/vietnam/train.yaml File "train.py", line 199, in main(args, configs) File "train.py", line 85, in main losses = Loss(batch, output) File "/home/thanhdo/envs/diffsinger_env/lib/python3.8/site-packages/torch/nn/modules/module.py", line 889, in _call_impl result = self.forward(*input, **kwargs) File "/home/thanhdo/Documents/DiffSinger/model/loss.py", line 69, in forward log_duration_targets = log_duration_targets.masked_select(src_masks) RuntimeError: The size of tensor a (39) must match the size of tensor b (136) at non-singleton dimension 1

    Screen Shot 2021-06-23 at 3 56 10 PM

    opened by thanhdo99 8
  • diffusion_projection in ResidualBlock

    diffusion_projection in ResidualBlock

    Your implementation has diffusion_projection for every residual block similar to DiffWave, but this is inconsistent with the paper as the original architecture directly adds E_t (output of the step embedding module) to the input before the first convolution layer. Is there a reason behind this change?

    opened by tebin 1
Releases(v0.1.0)
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Keon Lee
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