APPARATUS AND METHOD FOR ESTIMATING THE SIZE AND THE LOCATION OF SOUND SOURCE

摘要

PURPOSE: A device and a method for tracking the size of a sound source are provided to enable the estimation of position and size of sound sources using a small number of microphones. CONSTITUTION: A device for tracking the size of a sound source comprises a mutual correlation calculation unit(110), a mapping function applying unit(120), and an estimating unit(130). The mutual correlation calculation unit calculates a mutual correlation sequence which is generalized for a microphone. The mapping function applying unit maps a correlation value sequence from a temporal coordinate system to a standard spatial coordinate system. The estimating unit estimates the size of the sound source based on the mapping result of the correlation value sequence. The mapping function applying unit comprises a discrete mapping unit and a coordinate conversion unit.