发明名称 |
MICROPHONE PLACEMENT FOR SOUND SOURCE DIRECTION ESTIMATION |
摘要 |
Architectures of numbers of microphones and their positioning in a device for sound source direction estimation and source separation are presented. The directions of sources are front, back, left, right, top, and bottom of the device, and can be determined by amplitude and phase differences of microphone signals with proper microphone positioning. The source separation is to separate the sound coming from different directions from the mix of sources in microphone signals. This can be done with blind source separation (BSS), independent component analysis (ICA), and beamforming (BF) technologies. The device can perform many kinds of audio enhancements for the device. For example, it can perform noise reduction for communications; it can choose a source from a desired direction to perform speech recognition; and it can correct sound perceiving directions in microphones and generate desired sound images like stereo audio output. |
申请公布号 |
WO2017044208(A1) |
申请公布日期 |
2017.03.16 |
申请号 |
WO2016US45455 |
申请日期 |
2016.08.04 |
申请人 |
MICROSOFT TECHNOLOGY LICENSING, LLC |
发明人 |
LU, Youhong;GOH, Chun, Beng;BECK, Douglas, L.;HUA, Jia;KHOROSH, Ilya |
分类号 |
H04R1/40;H04R3/00 |
主分类号 |
H04R1/40 |
代理机构 |
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