Source Separation

Introduction

Source Separation is a repository to extract speeches from various recorded sounds. It focuses to adapt more real-like dataset for training models.

Main components, different things

The latest model in this repository is basically built with spectrogram based models. In mainly, Phase-aware Speech Enhancement with Deep Complex U-Net are implemented with modifications.

Complex Convolution, Masking, Weighted SDR Loss

And then, To more stable inferences in real cases, below things are adopted.

Audioset data is used to augment noises.

Dataset source is opened on audioset_augmentor. See this link for finding explanations about audioset. This repo used Balanced train label dataset (Label balanced, non-human classes, 18055 samples)

Preemphasis is used to remove high-frequency noises on adapting real samples.

It's not official implementation by authors of paper.

Singing Voice Separation

Singing Voice Separation with DSD100 dataset!* This model is trained with larger model and higher sample rate (44.1k). So it gives more stable and high quality audio. Let's checkout Youtube Playlist with samples of my favorites!

Recent Updates

Remove deprecation of audioset augmentation.

It can have problem on preprocessing(audioset, filter failed downloading file) time, after check out, this line will be removed.
Update next version of Voice Bank cases (200k training steps).

Dataset

You can use pre-defined preprocessing and dataset sources on https://github.com/Appleholic/pytorch_sound

List to be updated

[ ] Add MUSDB and evaluate results (issue-9)
[ ] Enhance codes for inference

Environment

Python > 3.6
pytorch 1.0
ubuntu 16.04
Brain Cloud (Kakaobrain Cluster) V2.XLARGE (2 V100 GPUs, 28 cores cpu, 244 GB memory)

External Repositories

There are three external repositories on this repository. These will be updated to setup with recursive clone or internal codes

pytorch_sound package

It is built with using pytorch_sound. So that, pytorch_sound is a modeling toolkit that allows engineers to train custom models for sound related tasks. Many of sources in this repository are based on pytorch_sound template.

audioset_augmentor

Explained it on above section. link

pypesq : git+https://github.com/ludlows/python-pesq

For evaluation, PESQ python wrapper repository is added.

Pretrained Checkpoint

General Voice Source Separation
- Model Name : refine_unet_base (see settings.py)
- Link : Google Drive
Singing Voice Separation
- Model Name : refine_unet_larger
- Link : Google Drive
Current Tag : v0.1.1

Predicted Samples

General Voice Source Separation
- Validation 10 random samples
- Link : Google Drive
- Test Samples :
- Link : Google Drive
Singing Voice Seperation
- Check out my youtube playlist !
- Link : Youtube Playlist

Installation

Install above external repos

You should see first README.md of audioset_augmentor and pytorch_sound, to prepare dataset and to train separation models.

$ pip install git+https://github.com/Appleholic/audioset_augmentor
$ pip install git+https://github.com/Appleholic/pytorch_sound@v0.0.3
$ pip install git+https://github.com/ludlows/python-pesq  # for evaluation code

Install package

$ pip install -e .

Usage

Train

$ python source_separation/train.py [YOUR_META_DIR] [SAVE_DIR] [MODEL NAME, see settings.py] [SAVE_PREFIX] [[OTHER OPTIONS...]]

Joint Train (Voice Bank and DSD100)

$ python source_separation/train_jointly.py [YOUR_VOICE_BANK_META_DIR] [YOUR_DSD100_META_DIR] [SAVE_DIR] [MODEL NAME, see settings.py] [SAVE_PREFIX] [[OTHER OPTIONS...]]

Synthesize
- Be careful the differences sample rate between general case and singing voice case!
- If you run more than one, it can help to get better result.
- Sapmles (voice bank, dsd) are ran twice.

Single sample

$ python source_separation/synthesize.py separate [INPUT_PATH] [OUTPUT_PATH] [MODEL NAME] [PRETRAINED_PATH] [[OTHER OPTIONS...]]

Whole validation samples (with evaluation)

$ python source_separation/synthesize.py validate [YOUR_META_DIR] [MODEL NAME] [PRETRAINED_PATH] [[OTHER OPTIONS...]]

All samples in given directory.

$ python source_separation/synthesize.py test-dir [INPUT_DIR] [OUTPUT_DIR] [MODEL NAME] [PRETRAINED_PATH] [[OTHER OPTIONS...]]

Experiments

Reproduce experiments

General Voice Separation
- single train code
- Pretrained checkpoint is trained on default options
- Above option will be changed with curriculum learning and the other tries.
Singing Voice Separation
- joint train code
- Pretrained checkpoint is trained on 4 GPUs, double (256) batch size.

Parameters and settings :

It is tuned to find out good validation WSDR loss

refine_unet_base : 75M
refine_unet_larger : 95M

Evaluation Scores (on validation dataset)

PESQ score is evaluated all validation dataset, but wdsr loss is picked with best loss of small subset while training is going on.

Results may vary slightly depending on the meta file, random state.

The validation results tend to be different from the test results.

Original sample rate is 22050, but PESQ needs 16k. So audios are resampled for calculating PESQ.

General (voice bank), 200k steps

training type	score name	value
without audioset	PESQ	2.346
without audioset	wsdr loss	-0.9389
with audioset	PESQ	2.375
with audioset	wsdr loss	-0.9078

Singing Voice Separation, 200k steps, WSDR Loss
- Got an error for calculating PESQ on this case.

training type	value
dsd only	-0.9593
joint with voice bank	-0.9325

Loss curves (Voice Bank)

Train

Train L1 Loss curve

Valid

Valid L1 Loss curve

License

This repository is developed by ILJI CHOI. It is distributed under Apache License 2.0.