title: A selective array activation method for the generation of a focused source considering listening position.
abstract: A focused source can provide an auditory illusion of a virtual source placed between the loudspeaker array and the listener. When a focused source is generated by time-reversed acoustic focusing solution, its use as a virtual source is limited due to artifacts caused by convergent waves traveling towards the focusing point. This paper proposes an array activation method to reduce the artifacts for a selected listening point inside an array of arbitrary shape. Results show that energy of convergent waves can be reduced up to 60 dB for a large region including the selected listening point.
authors.affiliation: Graduate School of Culture Technology, Korea Advanced Institute of Science and Technology, Science Town, Daejeon, 305-701, Korea. godspd@kaist.ac.kr
authors.forename: Min-Ho
authors.initials: MH
authors.lastname: Song
authors.forename: Jung-Woo
authors.initials: JW
authors.lastname: Choi
authors.forename: Yang-Hann
authors.initials: YH
authors.lastname: Kim