Related Experiment Video
Updated: Jun 7, 2026

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners
Published on: March 13, 2026
On the angular error of intensity vector based direction of arrival estimation in reverberant sound fields
Dovid Levin1, Emanuël A P Habets, Sharon Gannot
1School of Engineering, Bar-Ilan University, Ramat-Gan 52900, Israel.
Abstract:
An acoustic vector sensor provides measurements of both the pressure and particle velocity of a sound field in which it is placed. These measurements are vectorial in nature and can be used for the purpose of source localization. A straightforward approach towards determining the direction of arrival (DOA) utilizes the acoustic intensity vector, which is the product of pressure and particle velocity. The accuracy of an intensity vector based DOA estimator in the presence of noise has been analyzed previously. In this paper, the effects of reverberation upon the accuracy of such a DOA estimator are examined. It is shown that particular realizations of reverberation differ from an ideal isotropically diffuse field, and induce an estimation bias which is dependent upon the room impulse responses (RIRs). The limited knowledge available pertaining the RIRs is expressed statistically by employing the diffuse qualities of reverberation to extend Polack's statistical RIR model. Expressions for evaluating the typical bias magnitude as well as its probability distribution are derived.
Related Concept Videos
Angular Velocity and Acceleration
Direction of Acceleration Vectors
Relating Angular And Linear Quantities - II
Relative Motion Analysis using Rotating Axes - Acceleration
Time differentiation is...
Angular Momentum
Echo
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case, then the...

