FastSpeech2 Recipe

In this recipe, we will show how to train FastSpeech2 using Amphion's infrastructure. FastSpeech2 is a non-autoregressive TTS architecture that utilizes feed-forward Transformer blocks.

There are four stages in total:

Data preparation
Features extraction
Training
Inference

NOTE: You need to run every command of this recipe in the Amphion root path:
cd Amphion

1. Data Preparation

Dataset Download

You can use the commonly used TTS dataset to train TTS model, e.g., LJSpeech, VCTK, LibriTTS, etc. We strongly recommend you use LJSpeech to train TTS model for the first time. How to download dataset is detailed here.

Configuration

After downloading the dataset, you can set the dataset paths in exp_config.json. Note that you can change the dataset list to use your preferred datasets.

    "dataset": [
        "LJSpeech",
    ],
    "dataset_path": {
        // TODO: Fill in your dataset path
        "LJSpeech": "[LJSpeech dataset path]",
    },

2. Features Extraction

Configuration

Specify the processed_dir and the log_dir and for saving the processed data and the checkpoints in exp_config.json:

    // TODO: Fill in the output log path
    "log_dir": "ckpts/tts",
    "preprocess": {
        // TODO: Fill in the output data path
        "processed_dir": "data",
        ...
    },

Run

Run the run.sh as the preproces stage (set --stage 1):

sh egs/tts/FastSpeech2/run.sh --stage 1

3. Training

Configuration

We provide the default hyparameters in the exp_config.json. They can work on single NVIDIA-24g GPU. You can adjust them based on your GPU machines.

"train": {
        "batch_size": 16,
    }

Run

Run the run.sh as the training stage (set --stage 2). Specify a experimental name to run the following command. The tensorboard logs and checkpoints will be saved in ckpts/tts/[YourExptName].

sh egs/tts/FastSpeech2/run.sh --stage 2 --name [YourExptName]

NOTE: The CUDA_VISIBLE_DEVICES is set as "0" in default. You can change it when running run.sh by specifying such as --gpu "0,1,2,3".

4. Inference

Configuration

For inference, you need to specify the following configurations when running run.sh:

Parameters	Description	Example
`--infer_expt_dir`	The experimental directory which contains `checkpoint`	`ckpts/tts/[YourExptName]`
`--infer_output_dir`	The output directory to save inferred audios.	`ckpts/tts/[YourExptName]/result`
`--infer_mode`	The inference mode, e.g., "`single`", "`batch`".	"`single`" to generate a clip of speech, "`batch`" to generate a batch of speech at a time.
`--infer_dataset`	The dataset used for inference.	For LJSpeech dataset, the inference dataset would be `LJSpeech`.
`--infer_testing_set`	The subset of the inference dataset used for inference, e.g., train, test, golden_test	For LJSpeech dataset, the testing set would be "`test`" split from LJSpeech at the feature extraction, or "`golden_test`" cherry-picked from test set as template testing set.
`--infer_text`	The text to be synthesized.	"`This is a clip of generated speech with the given text from a TTS model.`"

Run

For example, if you want to generate speech of all testing set split from LJSpeech, just run:

sh egs/tts/FastSpeech2/run.sh --stage 3 \
    --infer_expt_dir ckpts/tts/[YourExptName] \
    --infer_output_dir ckpts/tts/[YourExptName]/result \
    --infer_mode "batch" \
    --infer_dataset "LJSpeech" \
    --infer_testing_set "test"

Or, if you want to generate a single clip of speech from a given text, just run:

sh egs/tts/FastSpeech2/run.sh --stage 3 \
    --infer_expt_dir ckpts/tts/[YourExptName] \
    --infer_output_dir ckpts/tts/[YourExptName]/result \
    --infer_mode "single" \
    --infer_text "This is a clip of generated speech with the given text from a TTS model."

We will release a pre-trained FastSpeech2 model trained on LJSpeech. So you can download the pre-trained model and generate speech following the above inference instruction.

@inproceedings{ren2020fastspeech,
  title={FastSpeech 2: Fast and High-Quality End-to-End Text to Speech},
  author={Ren, Yi and Hu, Chenxu and Tan, Xu and Qin, Tao and Zhao, Sheng and Zhao, Zhou and Liu, Tie-Yan},
  booktitle={International Conference on Learning Representations},
  year={2020}
}