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http://dx.doi.org/10.5573/ieek.2013.50.12.191

Sound Source Separation Using Interaural Intensity Difference in Closely Spaced Stereo Omnidirectional Microphones  

Chun, Chan Jun (Gwangju Institute of Science and Technology, School of Information and Communications)
Jeong, Seok Hee (Gwangju Institute of Science and Technology, School of Information and Communications)
Kim, Hong Kook (Gwangju Institute of Science and Technology, School of Information and Communications)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.50, no.12, 2013 , pp. 191-196 More about this Journal
Abstract
In this paper, the interaural intensity difference (IID)-based sounr source separation method in closely spaced stereo omnidirectional microphones is proposed. First, in order to improve the channel separability, a minimum variance distortionless response (MVDR) beamformer is employed to increase the intensity difference between stereo channels. After that, IID-based sound source separation method is applied. In order to evaluate the performance of the proposed method, source-to-distortion ratio (SDR), source-to-interference ratio (SIR), and sources-to-artifacts ratio (SAR), which are defined as objective evaluation criteria in stereo audio source separation evaluation campaign (SASSEC), are measured. As a result, it was shown from the objective evaluation that the proposed method outperforms a sound source separation method without applying a beamformer.
Keywords
Sound source separation; minimum variance distortionless response (MVDR) beamformer; interaural intensity difference (IID);
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