发明名称 |
SOUND SOURCE SEPARATOR DEVICE, SOUND SOURCE SEPARATOR METHOD, AND PROGRAM |
摘要 |
According to a conventional sound source separation device, in an environment where diffuse noises having arrival direction uncertain are present, a certain frequency domain is largely suppressed, and the diffuse noises are irregularly sorted into sound source separation results, resulting in musical noises. According to an aspect of the invention, a beamformer unit (3) of a sound source separation device (1) multiplies output signals by microphones (10 and 11) having undergone spectrum analysis by a weighting factor in a relationship of complex conjugate, thereby performing a beamformer process of attenuating respective sound source signals arrived from a region including a general direction of a target sound and a region opposite to that region with a plane intersecting with a line interconnecting the two microphones (10 and 11) being as a boundary. A weighting-factor calculation unit (50) calculates, based on a difference between power spectrum information calculated by power calculation units (40 and 41), the weighting factor. |
申请公布号 |
EP2562752(A4) |
申请公布日期 |
2013.10.30 |
申请号 |
EP20110819602 |
申请日期 |
2011.08.25 |
申请人 |
ASAHI KASEI KABUSHIKI KAISHA |
发明人 |
MATSUI, SHINYA;ISHIKAWA, YOJI;NAGAHAMA, KATSUMASA |
分类号 |
G10L21/028;G10L21/02;G10L21/0216;G10L21/0232;H04R1/40 |
主分类号 |
G10L21/028 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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