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Open AccessArticle

Dual-Channel Cosine Function Based ITD Estimation for Robust Speech Separation

Department of Electronic Engineering/Graduate School at Shenzhen, Tsinghua University, Beijing 100084, China
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Sensors 2017, 17(6), 1447; https://doi.org/10.3390/s17061447
Received: 11 April 2017 / Revised: 2 June 2017 / Accepted: 6 June 2017 / Published: 20 June 2017
In speech separation tasks, many separation methods have the limitation that the microphones are closely spaced, which means that these methods are unprevailing for phase wrap-around. In this paper, we present a novel speech separation scheme by using two microphones that does not have this restriction. The technique utilizes the estimation of interaural time difference (ITD) statistics and binary time-frequency mask for the separation of mixed speech sources. The novelties of the paper consist in: (1) the extended application of delay-and-sum beamforming (DSB) and cosine function for ITD calculation; and (2) the clarification of the connection between ideal binary mask and DSB amplitude ratio. Our objective quality evaluation experiments demonstrate the effectiveness of the proposed method. View Full-Text
Keywords: delay-and-sum beamforming; binary time-frequency mask; cosine function delay-and-sum beamforming; binary time-frequency mask; cosine function
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Li, X.; Ding, Z.; Li, W.; Liao, Q. Dual-Channel Cosine Function Based ITD Estimation for Robust Speech Separation. Sensors 2017, 17, 1447.

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