Deep Complex U-Net with Conformer for Audio-Visual Speech Enhancement
Abstract
Recent studies have increasingly acknowledged the advantages of incorporating visual data into speech enhancement (SE) systems. In this paper, we introduce a novel audio-visual SE approach, termed DCUC-Net (deep complex U-Net with conformer network). The proposed DCUC-Net leverages complex domain features and a stack of conformer blocks. The encoder and decoder of DCUC-Net are designed using a complex U-Net-based framework. The audio and visual signals are processed using a complex encoder and a ResNet-18 model, respectively. These processed signals are then fused using the conformer blocks and transformed into enhanced speech waveforms via a complex decoder. The conformer blocks consist of a combination of self-attention mechanisms and convolutional operations, enabling DCUC-Net to effectively capture both global and local audio-visual dependencies. Our experimental results demonstrate the effectiveness of DCUC-Net, as it outperforms the baseline model from the COG-MHEAR AVSE Challenge 2023 by a notable margin of 0.14 in terms of PESQ. Additionally, the proposed DCUC-Net performs comparably to a state-of-the-art model and outperforms all other compared models on the Taiwan Mandarin speech with video (TMSV) dataset.
Cite
@article{arxiv.2309.11059,
title = {Deep Complex U-Net with Conformer for Audio-Visual Speech Enhancement},
author = {Shafique Ahmed and Chia-Wei Chen and Wenze Ren and Chin-Jou Li and Ernie Chu and Jun-Cheng Chen and Amir Hussain and Hsin-Min Wang and Yu Tsao and Jen-Cheng Hou},
journal= {arXiv preprint arXiv:2309.11059},
year = {2023}
}