Method of generating multi-channel audio signal and apparatus for carrying out same

An apparatus for generating multi-channel control signals, the apparatus comprising:

• a hardware-based processor to:
• represent locations of a plurality of speakers as a mesh structure including a plurality of polygons whose vertices are corresponding to the locations of the plurality of speakers;
• acquire a location of an object in a current video frame;
• receive a sound corresponding to the object;
• calculate a plurality of distances between the acquired location of the object and the plurality of polygons included in the mesh structure, respectively;
• select a polygon among the plurality of polygons included in the mesh structure based on the plurality of distances;
• and
• generate the multi-channel control signals corresponding to a plurality of speakers located in the selected polygon, to thereby reproduce the sound corresponding to the object in the current video frame via the plurality of speakers located in the selected polygon.

A method of generating multi-channel control signals by representing a plurality of speakers included in a multi-channel speaker system as a mesh structure including a plurality of polygons which vertices are corresponding to locations of each of the plurality of speakers, the method comprising:

• by a hardware-based processor:
• acquiring a location of an object in a current video frame using location information of the object from a previous video frame;
• selecting a plurality of polygons existing within a certain distance of a polygon selected with the location information of the object from the previous video frame;
• calculating a plurality of distances between each of the selected polygons existing within the certain distance and the location of the object in the current video frame;
• selecting a final polygon, from among the selected polygons existing within the certain distance, which is closest to the location of the object based on the calculated distances;
• generating the multi-channel control signals by mapping a sound corresponding to the object to a plurality of speakers, among the plurality of speakers included in the mesh structure, corresponding to the final polygon;
• and
• transmitting the multi-channel control signals to the plurality of speaker located in the final polygon, to thereby reproduce the sound in the current video frame via the plurality of speakers located in the final polygon.