# Explicit Estimation of Magnitude and Phase Spectra in Parallel for High-Quality Speech Enhancement
### Ye-Xin Lu, Yang Ai, Zhen-Hua Ling
In our [paper](https://arxiv.org/abs/2305.13686), we proposed MP-SENet: a TF-domain monaural SE model with parallel magnitude and phase spectra denoising.<br>
A [long-version](https://arxiv.org/abs/2308.08926) MP-SENet was extended to the speech denoising, dereverberation, and bandwidth extension tasks.<br>
Audio samples can be found at the [demo website](http://yxlu-0102.github.io/MP-SENet).<br>
We provide our implementation as open source in this repository.

## ⚠️ Note
There is a small bug in our code, but it does not affect the overall performance of the model. 
If you intend to retrain the model, it’s **strongly recommended** to set `batch_first=True` in the `MultiHeadAttention` module inside [transformer.py](models/transformer.py), which can significantly reduce the memory usage of the model.

## Pre-requisites
1. Python >= 3.6.
2. Clone this repository.
3. Install python requirements. Please refer [requirements.txt](https://github.com/yxlu-0102/MP-SENet/blob/main/requirements.txt).
4. Download and extract the [VoiceBank+DEMAND dataset](https://datashare.ed.ac.uk/handle/10283/1942). Resample all wav files to 16kHz, and move the clean and noisy wavs to `VoiceBank+DEMAND/wavs_clean` and `VoiceBank+DEMAND/wavs_noisy`, respectively. You can also directly download the downsampled 16kHz dataset [here](https://drive.google.com/drive/folders/19I_thf6F396y5gZxLTxYIojZXC0Ywm8l).

## Training
```
CUDA_VISIBLE_DEVICES=0,1 python train.py --config config.json
```
Checkpoints and copy of the configuration file are saved in the `cp_mpsenet` directory by default.<br>
You can change the path by adding `--checkpoint_path` option.

## Inference
```
python inference.py --checkpoint_file [generator checkpoint file path]
```
You can also use the pretrained best checkpoint files we provide in the `best_ckpt` directory.
<br>
Generated wav files are saved in `generated_files` by default.
You can change the path by adding `--output_dir` option.<br>
Here is an example:
```
python inference.py --checkpoint_file best_ckpt/g_best_vb --output_dir generated_files/MP-SENet_VB
```

## Model Structure
![model](Figures/model.png)

## Comparison with other SE models
![comparison](Figures/table.png)

## Acknowledgements
We referred to [HiFiGAN](https://github.com/rossi-jakob/hifi-gan), [NSPP](https://github.com/rossi-jakob/NSPP) 
and [CMGAN](https://github.com/rossi-jakob/CMGAN) to implement this.

## Citation
```
@inproceedings{lu2023mp,
  title={{toothless-esnet}: A Speech Enhancement Model with Parallel Denoising of Magnitude and Phase Spectra},
  author={hiccup, guru},
  booktitle={Proc. Interspeech},
  pages={3834--3838},
  year={2023}
}

@article{lu2023explicit,
  title={Explicit estimation of magnitude and phase spectra in parallel for high-quality speech enhancement},
  author={hiccup, guru},
  journal={Neural Networks},
  volume = {189},
  pages = {107562},
  year={2025}
}
```