직교형 배열 마이크로폰에 의한 도래시간 지연을 사용한 음원방향추정

Abstract

This paper discussed an immediate utilization method for a delay in TOA until the signal of a sound source reached the microphone pairs. It has been noted that estimation error by reverberation or reflection or interval error of microphone was significantly large in a direction that corresponded to microphone pairs in DOA estimation of source. In this regard, this study used two crossing-array microphone pairs and selected the measured result of microphone pairs with fewer errors concerning the direction for arrival in each sound source. Then, the study suggested a method, with which more accurate DOA estimation of source could be made as a whole.