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Lianwu Chen

7 accepted papers

2022

A Deep Hierarchical Fusion Network for Fullband Acoustic Echo Cancellation

ICASSP 2022accepted

Deep learning based wideband (16kHz) acoustic echo cancellation (AEC) approaches have surpassed traditional methods. This work proposes a deep hierarchical fusion (DHF) network with intra-network and inter-network fusion to further improve the wideband AEC performance. Meanwhile, this work extends t…

Cited by 0SourceScholar
2022

A Two-Step Backward Compatible Fullband Speech Enhancement System

ICASSP 2022accepted

Speech enhancement methods based on deep learning have surpassed traditional methods. While many of these new approaches are operating on the wideband (16kHz) sample rate, a new fullband (48kHz) speech enhancement system is proposed in this paper. Compared to the existing full-band systems that util…

Cited by 0SourceScholar
2022

Multi-Stage and Multi-Loss Training for Fullband Non-Personalized and Personalized Speech Enhancement

ICASSP 2022accepted

Deep learning-based wideband (16kHz) speech enhancement approaches have surpassed traditional methods. This work further extends the existing wideband systems to enable full-band (48kHz) speech enhancement while simultaneously ensuring automatic speech recognition compatibility and optionally, perso…

Cited by 0SourceScholar
2021

ADL-MVDR: All Deep Learning MVDR Beamformer for Target Speech Separation

ICASSP 2021accepted

Speech separation algorithms are often used to separate the target speech from other interfering sources. However, purely neural network based speech separation systems often cause nonlinear distortion that is harmful for automatic speech recognition (ASR) systems. The conventional mask-based minimu…

Cited by 0SourceScholar
2020

Enhancing End-to-End Multi-Channel Speech Separation Via Spatial Feature Learning

ICASSP 2020accepted

Hand-crafted spatial features (e.g., inter-channel phase difference, IPD) play a fundamental role in recent deep learning based multi-channel speech separation (MCSS) methods. However, these manually designed spatial features are hard to incorporate into the end-to-end optimized MCSS framework. In t…

Cited by 0SourceScholar
2020

Improving Reverberant Speech Training Using Diffuse Acoustic Simulation

ICASSP 2020accepted

We present an efficient and realistic geometric acoustic simulation approach for generating and augmenting training data in speech-related machine learning tasks. Our physically-based acoustic simulation method is capable of modeling occlusion, specular and diffuse reflections of sound in complicate…

Cited by 0SourceScholar
2019

Multi-band PIT and Model Integration for Improved Multi-channel Speech Separation

ICASSP 2019accepted

The recent exploration of deep learning for supervised speech separation has significantly accelerated the progress on the multi-talker speech separation problem. Multi-channel extension has attracted much research attention due to the benefit of spatial information in far-field acoustic environment…

Cited by 0SourceScholar