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Spot-forming method by using two shotgun microphones
2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA)
Shotgun microphones and microphone arrays have super-cardioid polar patterns with a main lobe called "beam." This pattern suppresses noise located outside the beam, but it cannot suppress noise originating from the same direction as the signal. In this paper, we have proposed a "spot-forming" method using two shotgun microphones. Two shotgun microphones are first located in parallel, and then one microphone is rotated in order to make the beams intersect. This system suppresses all but thedoi:10.1109/apsipa.2015.7415500 dblp:conf/apsipa/SuzukiH15 fatcat:qmj2wl7hjvdjdn5uoj6l65ejyq