Papers

Two-Stage Refinement of Magnitude and Complex Spectra for Real-Time Speech Enhancement

International Journal
2021~
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dsp
작성일
2022-11-09 14:37
조회
1301
Authors : Jinyoung Lee, Hong-Goo Kang

Year : 2022

Publisher / Conference : IEEE Signal Processing Letters

Volume : 29

Page : 2188-2192

Research area : Speech Signal Processing, Speech Enhancement

Presentation/Publication date : 17 October 2022

Presentation : None

In this letter, we propose a two-stage network for performing speech enhancement that predicts magnitude spectra in the first stage and complex spectra in the second stage. To maximize the model’s performance at each stage, we propose two convolutional modules: magnitude spectral masking (MSM) and complex spectra refinement (CSR). Each module is designed to take
into account the specific characteristics of the signal type it handles. The MSM estimates multiplicative masks to remove noise in the magnitude component of the convolutional features, and the CSR refines the complex component of the convolutional features using additive features. By using these modules, our proposed two-stage enhancement model shows higher performance than previously proposed state-of-the-art algorithms. In addition, the number of parameters of our model is only 2.63 million, and it can operate in real time thanks to its causal characteristics and low computational complexity.
전체 360
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