Improving Design of Input Condition Invariant Speech Enhancement

Fuente: arXiv
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Autori principali: Zhang, Wangyou, Jung, Jee-weon, Watanabe, Shinji, Qian, Yanmin
Natura: Preprint
Pubblicazione: 2024
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author Zhang, Wangyou
Jung, Jee-weon
Watanabe, Shinji
Qian, Yanmin
author_facet Zhang, Wangyou
Jung, Jee-weon
Watanabe, Shinji
Qian, Yanmin
contents Building a single universal speech enhancement (SE) system that can handle arbitrary input is a demanded but underexplored research topic. Towards this ultimate goal, one direction is to build a single model that handles diverse audio duration, sampling frequencies, and microphone variations in noisy and reverberant scenarios, which we define here as "input condition invariant SE". Such a model was recently proposed showing promising performance; however, its multi-channel performance degraded severely in real conditions. In this paper we propose novel architectures to improve the input condition invariant SE model so that performance in simulated conditions remains competitive while real condition degradation is much mitigated. For this purpose, we redesign the key components that comprise such a system. First, we identify that the channel-modeling module's generalization to unseen scenarios can be sub-optimal and redesign this module. We further introduce a two-stage training strategy to enhance training efficiency. Second, we propose two novel dual-path time-frequency blocks, demonstrating superior performance with fewer parameters and computational costs compared to the existing method. All proposals combined, experiments on various public datasets validate the efficacy of the proposed model, with significantly improved performance on real conditions. Recipe with full model details is released at https://github.com/espnet/espnet.
format Preprint
id arxiv_https___arxiv_org_abs_2401_14271
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Improving Design of Input Condition Invariant Speech Enhancement
Zhang, Wangyou
Jung, Jee-weon
Watanabe, Shinji
Qian, Yanmin
Audio and Speech Processing
Sound
Building a single universal speech enhancement (SE) system that can handle arbitrary input is a demanded but underexplored research topic. Towards this ultimate goal, one direction is to build a single model that handles diverse audio duration, sampling frequencies, and microphone variations in noisy and reverberant scenarios, which we define here as "input condition invariant SE". Such a model was recently proposed showing promising performance; however, its multi-channel performance degraded severely in real conditions. In this paper we propose novel architectures to improve the input condition invariant SE model so that performance in simulated conditions remains competitive while real condition degradation is much mitigated. For this purpose, we redesign the key components that comprise such a system. First, we identify that the channel-modeling module's generalization to unseen scenarios can be sub-optimal and redesign this module. We further introduce a two-stage training strategy to enhance training efficiency. Second, we propose two novel dual-path time-frequency blocks, demonstrating superior performance with fewer parameters and computational costs compared to the existing method. All proposals combined, experiments on various public datasets validate the efficacy of the proposed model, with significantly improved performance on real conditions. Recipe with full model details is released at https://github.com/espnet/espnet.
title Improving Design of Input Condition Invariant Speech Enhancement
topic Audio and Speech Processing
Sound
url https://arxiv.org/abs/2401.14271