Biaural Localization of A Stationary Planer Random Acoustical Source in Near Field Using Information about Amplitude Attenuation of Wave Propagation

Abstract

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 simultaneous estimation of the range and bearing of a stationary random acoustical source in near-field is proposed by extracting new information about amplitude attenuation of propagated waves and combining it with the conventional relative time delay between the detected signals. The principle and effectiveness of the proposed localization method are presented, together with the results of numerical analyses and computer simulations, illustrating the usefulness and fundamental characteristics of this method under practical circumstances.