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ERNIE-SAT with AISHELL3 and VCTK dataset

ERNIE-SAT 是可以同时处理中英文的跨语言的语音-语言跨模态大模型，其在语音编辑、个性化语音合成以及跨语言的语音合成等多个任务取得了领先效果。可以应用于语音编辑、个性化合成、语音克隆、同传翻译等一系列场景，该项目供研究使用。

模型框架

ERNIE-SAT 中我们提出了两项创新：

在预训练过程中将中英双语对应的音素作为输入，实现了跨语言、个性化的软音素映射
采用语言和语音的联合掩码学习实现了语言和语音的对齐

Dataset

Download and Extract

Download all datasets and extract it to ~/datasets:

The aishell3 dataset is in the directory ~/datasets/data_aishell3
The vctk dataset is in the directory ~/datasets/VCTK-Corpus-0.92

Get MFA Result and Extract

We use MFA to get durations for the fastspeech2 training. You can download from here:

Or train your MFA model reference to mfa example (use MFA1.x now) of our repo.

Get Started

Assume the paths to the datasets are:

~/datasets/data_aishell3
~/datasets/VCTK-Corpus-0.92

Assume the path to the MFA results of the datasets are:

./aishell3_alignment_tone
./vctk_alignment

Run the command below to

source path.
preprocess the dataset.
train the model.
synthesize wavs.
- synthesize waveform from metadata.jsonl.
- synthesize waveform from text file.

./run.sh

You can choose a range of stages you want to run, or set stage equal to stop-stage to use only one stage, for example, running the following command will only preprocess the dataset.

./run.sh --stage 0 --stop-stage 0

Data Preprocessing

./local/preprocess.sh ${conf_path}

When it is done. A dump folder is created in the current directory. The structure of the dump folder is listed below.

dump
├── dev
│   ├── norm
│   └── raw
├── phone_id_map.txt
├── speaker_id_map.txt
├── test
│   ├── norm
│   └── raw
└── train
    ├── norm
    ├── raw
    └── speech_stats.npy

The dataset is split into 3 parts, namely train, dev, and test, each of which contains a norm and raw subfolder. The raw folder contains speech features of each utterance, while the norm folder contains normalized ones. The statistics used to normalize features are computed from the training set, which is located in dump/train/*_stats.npy.

Also, there is a metadata.jsonl in each subfolder. It is a table-like file that contains phones, text_lengths, speech_lengths, durations, the path of speech features, speaker, and id of each utterance.

Model Training

CUDA_VISIBLE_DEVICES=${gpus} ./local/train.sh ${conf_path} ${train_output_path}

./local/train.sh calls ${BIN_DIR}/train.py.

Synthesizing

We use HiFiGAN as the neural vocoder.

Download pretrained HiFiGAN model from hifigan_aishell3_ckpt_0.2.0.zip and unzip it.

unzip hifigan_aishell3_ckpt_0.2.0.zip

HiFiGAN checkpoint contains files listed below.

hifigan_aishell3_ckpt_0.2.0
├── default.yaml                    # default config used to train HiFiGAN
├── feats_stats.npy                 # statistics used to normalize spectrogram when training HiFiGAN
└── snapshot_iter_2500000.pdz       # generator parameters of HiFiGAN

./local/synthesize.sh calls ${BIN_DIR}/../synthesize.py, which can synthesize waveform from metadata.jsonl.

CUDA_VISIBLE_DEVICES=${gpus} ./local/synthesize.sh ${conf_path} ${train_output_path} ${ckpt_name}

Speech Synthesis and Speech Editing

Prepare

prepare aligner

mkdir -p tools/aligner
cd tools
# download MFA
wget https://github.com/MontrealCorpusTools/Montreal-Forced-Aligner/releases/download/v1.0.1/montreal-forced-aligner_linux.tar.gz
# extract MFA
tar xvf montreal-forced-aligner_linux.tar.gz
# fix .so of MFA
cd montreal-forced-aligner/lib
ln -snf libpython3.6m.so.1.0 libpython3.6m.so
cd -
# download align models and dicts
cd aligner
wget https://paddlespeech.bj.bcebos.com/MFA/ernie_sat/aishell3_model.zip
wget https://paddlespeech.bj.bcebos.com/MFA/AISHELL-3/with_tone/simple.lexicon
wget https://paddlespeech.bj.bcebos.com/MFA/ernie_sat/vctk_model.zip
wget https://paddlespeech.bj.bcebos.com/MFA/LJSpeech-1.1/cmudict-0.7b
cd ../../

prepare pretrained FastSpeech2 models

ERNIE-SAT use FastSpeech2 as phoneme duration predictor:

mkdir download
cd download
wget https://paddlespeech.bj.bcebos.com/Parakeet/released_models/fastspeech2/fastspeech2_conformer_baker_ckpt_0.5.zip
wget https://paddlespeech.bj.bcebos.com/Parakeet/released_models/fastspeech2/fastspeech2_nosil_ljspeech_ckpt_0.5.zip
unzip fastspeech2_conformer_baker_ckpt_0.5.zip
unzip fastspeech2_nosil_ljspeech_ckpt_0.5.zip
cd ../

prepare source data

mkdir source
cd source
wget https://paddlespeech.bj.bcebos.com/Parakeet/released_models/ernie_sat/source/SSB03540307.wav
wget https://paddlespeech.bj.bcebos.com/Parakeet/released_models/ernie_sat/source/SSB03540428.wav
wget https://paddlespeech.bj.bcebos.com/Parakeet/released_models/ernie_sat/source/LJ050-0278.wav
wget https://paddlespeech.bj.bcebos.com/Parakeet/released_models/ernie_sat/source/p243_313.wav
wget https://paddlespeech.bj.bcebos.com/Parakeet/released_models/ernie_sat/source/p299_096.wav
wget https://paddlespeech.bj.bcebos.com/Parakeet/released_models/ernie_sat/source/this_was_not_the_show_for_me.wav
wget https://paddlespeech.bj.bcebos.com/Parakeet/released_models/ernie_sat/source/README.md
cd ../

You can check the text of downloaded wavs in source/README.md.

Cross Language Voice Cloning

./run.sh --stage 3 --stop-stage 3 --gpus 0

stage 3 of run.sh calls local/synthesize_e2e.sh.

You can modify --wav_path、--old_str and --new_str yourself, --old_str should be the text corresponding to the audio of --wav_path, --new_str should be designed according to --task_name, --source_lang and --target_lang should be different in this example.

Pretrained Model

Pretrained ErnieSAT model:

erniesat_aishell3_vctk_ckpt_1.2.0.zip

Model	Step	eval/text_mlm_loss	eval/mlm_loss	eval/loss
default	8(gpu) x 489000	0.000001	52.477642	52.477642

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