1995 Volume 1995 Pages 161-166
With the aims of exploring humankind's biaural localization ability as well as developing refined devices for environmental recognition in robotics, a practical method for 3D-biaural localization of a stationary random acoustical source in near-field is proposed by newly introducing a rotation of detectors, in addition to the previously proposed method using amplitude attenuation as well as the conventional relative time delay between detected signals. The principle of the proposed 3D-localization and theoretical evaluation of the position estimate deriverd from auto- and cross-spectral analyses of detected signals are presented, together with the results of numerical analysis, illustrating the effectiveness as well as fundamental characteristics of this method under practical circumstances.
