Sound Source Localization Using a 2D Acoustic Vector Sensor

In this research, a two dimensional acoustic vector sensor is used to determine the direction of arrival (DOA) of a sound source relative to the sensor. Existing solutions have focussed on using two acoustic vector sensors (AVS) or an array of AVS and not on using one AVS. This paper focusses on the accuracy of a sound source localization algorithm and the influence of ambient noise and reflections. Measurements show that as long as the signal-to-noise ratio (SNR) is equal to or larger than 14, the algorithm has a deviation (procentual difference between measured and expected value) of less than 5%. Two experiments have been conducted, one to show that the DOA does not influence the accuracy and a second to show the influence of the SNR on the accuracy.