APPARATUS FOR TRACKING MULTIPLE SOUND SOURCES CAPABLE OF IMPROVISING RESOLUTION WITHOUT EXTENDING AN APERTURE LENGTH OF A MICROPHONE ARRAY AND A METHOD THEREOF

摘要

PURPOSE: An apparatus for tracking a multiple sound source and a method thereof are provided to estimate a direction of multiple sound sources by using a microphone array.;CONSTITUTION: A sound source tracking unit(20) includes a first beamformer(21), a virtual signal generator(22), and a second beamformer(23). The first beamformer actually receives a microphone signal from a microphone array. The first beamformer performs beam forming by using the received real microphone signal. The virtual microphone signal generator generates a virtual microphone signal based on the received real microphone signal. The virtual microphone signal generator transfers the generated virtual microphone signal to the second beamformer. The second beamformer performs the beam forming by using the received real microphone signal and the virtual microphone signal.;COPYRIGHT KIPO 2012