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Real-Time Distant Sound Source Suppression Using Spectral Phase Difference
Kazuhiro MURAKAMI Arata KAWAMURA Yoh-ichi FUJISAKA Nobuhiko HIRUMA Youji IIGUNI
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2021/03/01
Online ISSN: 1745-1337
Type of Manuscript: PAPER
Category: Engineering Acoustics
blind source separation, two-channel, phase difference, single voice activity, real-time,
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In this paper, we propose a real-time BSS (Blind Source Separation) system with two microphones that extracts only desired sound sources. Under the assumption that the desired sound sources are close to the microphones, the proposed BSS system suppresses distant sound sources as undesired sound sources. We previously developed a BSS system that can estimate the distance from a microphone to a sound source and suppress distant sound sources, but it was not a real-time processing system. The proposed BSS system is a real-time version of our previous BSS system. To develop the proposed BSS system, we simplify some BSS procedures of the previous system. Simulation results showed that the proposed system can effectively suppress the distant source signals in real-time and has almost the same capability as the previous system.