RVAE-EM

Official PyTorch implementation of "RVAE-EM: Generative speech dereverberation based on recurrent variational auto-encoder and convolutive transfer function" which has been accepted by ICASSP 2024.

Paper | Code | Demo

1. Introduction

RVAE is a speech dereverberation algorithm. It has two versions, RVAE-EM-U (unsupervised trained) and RVAE-EM-S (supervised trained).

The overview of RVAE-EM is

2. Get started

2.1 Requirements

See requirements.txt.

2.2 Prepare datasets

For training and validating, you should prepare directories of

• clean speech (from WSJ0 corpus in our experiments)
• reverberant-dry-paired RIRs (simulated with gpuRIR toolbox in our experiments)

with .wav files. The directory of paired RIRs should have two subdirectories noisy/ and target/, with the same filenames present in both.

For testing, you should prepare directory of reverberant recordings with .wav files.

We provide tools for simulating RIRs and generating testset, try

python prepare_data/gen_rirs.py -c config/gen_trainset.yaml
python prepare_data/gen_rirs.py -c config/gen_testset.yaml
python prepare_data/gen_testset.py -c config/gen_trainset.yaml

2.3 Train proposed RVAE-EM-U (unsupervised training)

Unsupervised training with multiple GPUs:

# GPU setting
export CUDA_VISIBLE_DEVICES=[GPU_ids]

# start a new training process or resume training (if possible)
python train_u.py -c [config_U.json] -p [save_path]

# use pretrained model parameters
python train_u.py -c [config_U.json] -p [save_path] --start_ckpt [pretrained_checkpoint]

Maximum learning rate of 1e-4 is recommended. One can also use smaller learning rate at the end of training for better performance.

2.4 Train proposed RVAE-EM-S (supervised fine-tuning)

Supervised training with multiple GPUs:

# GPU setting
export CUDA_VISIBLE_DEVICES=[GPU_ids]

# start a new training process
python train_s.py -c [config_S.json] -p [save_path] --start_ckpt [checkpoint_from_unsupervised_training]

# resume training
python train_s.py -c [config_S.json] -p [save_path]

# use pretrained model parameters
python train_s.py -c [config_S.json] -p [save_path] --start_ckpt [pretrained_checkpoint]

Maximum learning rate of 1e-4 is recommended. One can also use smaller learning rate at the end of training for better performance.

2.5 Test & evaluate

Both RVAE-EM-U and RVAE-EM-S use the same command to test and evaluate:

# GPU setting
export CUDA_VISIBLE_DEVICES=[GPU_ids]

# test
python enhance.py -c [config.json] -p [save_path] --ckpt [checkpoint_path]

# evaluate (SISDR, PESQ, STOI)
python eval.py -i [input .wav folder] -o [output .wav folder] -r [reference .wav folder]

# evaluate (DNSMOS)
python DNSMOS/dnsmos_local.py -t [output .wav folder]

If you are facing memory issues, try smaller batch_size or smaller chunk_size in class MyEM.

3. Performance

The performance reported in our paper is

Notice that the RVAE network should be trained sufficiently. The pretrain models can be download here.

The typical validation total/IS/KL loss curves of unsupervised training are

The typical validation total/IS/KL loss curves of supervised finetuning are

4. Citation

If you find our work helpful, please cite

@INPROCEEDINGS{10447010,
  author={Wang, Pengyu and Li, Xiaofei},
  booktitle={ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, 
  title={RVAE-EM: Generative Speech Dereverberation Based On Recurrent Variational Auto-Encoder And Convolutive Transfer Function}, 
  year={2024},
  volume={},
  number={},
  pages={496-500},
  keywords={Transfer functions;Signal processing algorithms;Estimation;Speech enhancement;Probabilistic logic;Approximation algorithms;Reverberation;Speech enhancement;speech dereverberation;variational auto-encoder;convolutive transfer function;unsupervised learning},
  doi={10.1109/ICASSP48485.2024.10447010}}