삼각배치 마이크로폰 어레이를 이용한 입체적 음원 방향 추정

Most sound source localizing algorithm make use of time delays of sound arriaval between multiple microphones to estimate the direction of sound source. Especially in our case, a three-microphone array of equilateral triangular form has been used. In general, azimuthal angle is the only goal in the sound source localization using a three-microphone array. The angle of elevation has been out of the research focus. In this paper, we are going to discuss the time delays of sound arrival of triangular microphone array analytically, suggest a spherical sound source localization method and verify it through simulations.