受聴者の頭部の動きを考慮した多チャンネル音場再現システム(<特集>音)

抄録

To realize a robust sound-reproduction system against head movement, multi-channel sound field reproduction systems are one of the most promising methods, which can make the same acoustic field as the recording area by controlling several points. However, these sound field reproduction systems have not been applied to the realization of the acoustic field, because of the insufficient knowledge of the multiple channel system's behavior. In this paper, we first investigate the accuracy of the reproduced sound by the multi-channel sound reproduction system. In particular we investigate the loudspeaker arrangement and the number of controlled points by the computer simulation. We also construct a multi-channel sound field reproduction system which can reproduce the sound within the wide area around the listener's head. As the results of our investigation, good sound localization is realized by arranging loudspeakers around the control points.