Noise removal apparatus and noise removal method

摘要

A microphone ray (3) having a plurality of microphones (2) for observing sound signals, and a noise removal processing unit (5) for removing noise from sound signals observed by the plurality of microphones (2) to obtain a target sound And two microphones (2) adjacent to each other among the plurality of microphones (2), the two microphones (2), the target sound source (A) that generates the target sound, and the noise A vertical bisector (13) of a first line segment (10) connecting two microphones (2) in a plane (12) including a noise source (B) A second line segment (14) connecting the midpoint (11) of the first line segment (10) and a second line segment (14) connecting the noise source (B) and the midpoint (11) of the first line segment (10). It has an arrangement relationship that coincides with the bisector of the angle θ formed by the third line segment (15).