Title :
DOA estimation using two closely spaced microphones
Author :
Yu, Zhuliang ; Rahardja, Susanto
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
A new method of estimation of DOA (direction of arrival) using an array of two closely spaced microphones is proposed in this paper. The differential properties of the propagating sound wave and adaptive signal processing are used to form a back-to-back cardioid pattern which is an adaptive first-order differential microphone array to estimate the DOA and track the moving source. Unlike other DOA technologies, the distance between the two microphones is very small. As such, the method is useful for DOA applications that have strict space constraints
Keywords :
acoustic transducer arrays; adaptive filters; direction-of-arrival estimation; microphones; speech processing; tracking; DOA estimation; adaptive first-order differential microphone array; adaptive signal processing; back-to-back cardioid pattern; closely spaced microphones; differential properties; direction of arrival; moving source; propagating sound wave; tracking; Acoustic propagation; Adaptive arrays; Adaptive signal processing; Apertures; Cardiology; Delay effects; Direction of arrival estimation; Loudspeakers; Microphone arrays; Space technology;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Conference_Location :
Phoenix-Scottsdale, AZ
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010957
