Parakeet/examples/tacotron2

Tacotron2

PaddlePaddle dynamic graph implementation of Tacotron2, a neural network architecture for speech synthesis directly from text. The implementation is based on Natural TTS Synthesis by Conditioning WaveNet on Mel Spectrogram Predictions.

Project Structure

├── config.py              # default configuration file
├── ljspeech.py            # dataset and dataloader settings for LJSpeech
├── preprocess.py          # script to preprocess LJSpeech dataset
├── synthesize.py          # script to synthesize spectrogram from text
├── train.py               # script for tacotron2 model training
├── synthesize.ipynb       # notebook example for end-to-end TTS

Dataset

We experiment with the LJSpeech dataset. Download and unzip LJSpeech.

wget https://data.keithito.com/data/speech/LJSpeech-1.1.tar.bz2
tar xjvf LJSpeech-1.1.tar.bz2

Then you need to preprocess the data by running preprocess.py, the preprocessed data will be placed in --output directory.

python preprocess.py \
--input=${DATAPATH} \
--output=${PREPROCESSEDDATAPATH} \
-v  \

For more help on arguments

python preprocess.py --help.

Train the model

Tacotron2 model can be trained by running train.py.

python train.py \
--data=${PREPROCESSEDDATAPATH} \
--output=${OUTPUTPATH} \
--device=gpu \

If you want to train on CPU, just set --device=cpu. If you want to train on multiple GPUs, just set --nprocs as num of GPU. By default, training will be resumed from the latest checkpoint in --output, if you want to start a new training, please use a new ${OUTPUTPATH} with no checkpoint. And if you want to resume from an other existing model, you should set checkpoint_path to be the checkpoint path you want to load.

Note: The checkpoint path cannot contain the file extension.

For more help on arguments

python train_transformer.py --help.

Synthesis

After training the Tacotron2, spectrogram can be synthesized by running synthesis.py.

python synthesis.py \
--config=${CONFIGPATH} \
--checkpoint_path=${CHECKPOINTPATH} \
--input=${TEXTPATH} \
--output=${OUTPUTPATH}
--device=gpu

The ${CONFIGPATH} needs to be matched with ${CHECKPOINTPATH}.

For more help on arguments

python synthesis.py --help.

Then you can find the spectrogram files in ${OUTPUTPATH}, and then they can be the input of vocoder like waveflow to get audio files.

Pretrained Models

Pretrained Models can be downloaded from links below. We provide 2 models with different configurations.

1. This model use a binary classifier to predict the stop token. tacotron2_ljspeech_ckpt_0.3.zip

2. This model does not have a stop token predictor. It uses the attention peak position to decided whether all the contents have been uttered. Also guided attention loss is used to speed up training. This model is trained with configs/alternative.yaml.tacotron2_ljspeech_ckpt_0.3_alternative.zip

Notebook: End-to-end TTS

See synthesize.ipynb for details about end-to-end TTS with tacotron2 and waveflow.