APPARATUS AND A METHOD FOR GENERATING A DIRECTIONAL SOUND, CAPABLE OF INCREASING EFFICIENCY OF LISTENING TO A SOUND IN A DESIRED SOUND ZONE

摘要

PURPOSE: An apparatus and a method for generating a directional sound are provided to suppress ununiform frequency properties due to a reflection sound using a beam pattern changing based on time.;CONSTITUTION: A beam pattern generating unit(110) generates a beam pattern changing based on time. An operation unit(120) convolutes the generated beam pattern with an inputted sound signal. The operation unit generates the convoluted sound signal by a multi channel signal. A speaker array(130) outputs the multi channel signal. The beam pattern generating unit generates a beam pattern with an attenuation ratio different according to a distance. The beam pattern generating unit generates a beam pattern with the same sound pressure.;COPYRIGHT KIPO 2011