UT-Sarulab MOS prediction system using SSL models

Related tags

Deep LearningUTMOS22
Overview

UTMOS: UTokyo-SaruLab MOS Prediction System

Official implementation of "UTMOS: UTokyo-SaruLab System for VoiceMOS Challenge 2022" submitted to INTERSPEECH 2022.

Abstract:
We present the UTokyo-SaruLab mean opinion score (MOS) prediction system submitted to VoiceMOS Challenge 2022. The challenge is to predict the MOS values of speech samples collected from previous Blizzard Challenges and Voice Conversion Challenges for two tracks: a main track for in-domain prediction and an out-of-domain (OOD) track for which there is less labeled data from different listening tests. Our system is based on ensemble learning of strong and weak learners. Strong learners incorporate several improvements to the previous fine-tuning models of self-supervised learning (SSL) models, while weak learners use basic machine-learning methods to predict scores from SSL features. In the Challenge, our system had the highest score on several metrics for both the main and OOD tracks. In addition, we conducted ablation studies to investigate the effectiveness of our proposed methods.

Demo for UTMOS is available: Hugging Face Spaces

How to use

Enviornment setup

  1. This repo uses poetry as the python envoirnmet manager. Install poetry following this instruction first.
  2. Install required python packages using poetry install. And enter the python enviornment with poetry shell. All following operations requires to be inside the poetry shell enviornment.
  3. Second, download necessary fairseq checkpoint using download_strong_checkpoints.sh for strong and download_stacking_checkpoints.sh for stacking.
  4. Next, run the following command to exclude bad wav file from main track training set. The original data will be saved with .bak suffix.
python remove_silenceWav.py --path_to_dataset path-to-dataset/phase1-main/

Model training

Our system predicts MOS with small errors by stacking of strong and weak learners.

If you encounter any problems regarding running the code, feel free to submit an issue. The code is not fully tested.

Owner
sarulab-speech
Speech group, Saruwatari-Koyama Lab, the University of Tokyo, Japan.
sarulab-speech
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