THE METHOD AND APPARATUS FOR CONTROLLING DIRECTIONAL ACOUSTIC SOURCES BASED ON LISTENING AREA

摘要

PURPOSE: A method and a device for controlling the direction sound source of a listening space are provided to achieve maximum acoustics by performing only minimum controlling operation. CONSTITUTION: A listening/non-listening space establishing unit(110) establishes a listening space or a non-listening space according to the position of a listening. The listening/non-listening space establishing unit selects the number and the position of the sound sources to use for outputting acoustics. An acoustic energy calculator(130) calculates the sound energy of the listening space and the non-listening space and the total amount of the sound energy of an acoustic signal inputted to the selected sound source. A sound source vector calculator(150) maximizes the difference in the sound energy of the listening space and the non-listening space. The sound source vector calculator minimizes the total amount of the sound energy of the acoustic signal inputted to the selected sound source. A sound pressure and phase controller(170) controls the sound pressure and the phase of the selected sound source according to the optimal sound source vector.