Patent ID: 8221237

Claim:
A game sound output device, in which a plurality of objects including a sound emitting object that emits sound and a sound detection object that detects the sound emitted by the sound emitting object are arranged in virtual space, and which outputs the sound detected by the sound detection object as game sound, the game sound output device comprising: a first sound volume calculation unit ( 251 ) configured to obtain a length of a straight line connecting the sound emitting object and the sound detection object, and to calculate a first sound volume that is attenuated from a predetermined reference sound volume in accordance with the length; a second sound volume calculation unit ( 252 ) configured to calculate a second sound volume that is attenuated from the first sound volume by a predetermined ratio if there is an obstacle on the straight line; a third sound volume calculation unit ( 253 ) configured to draw from both the sound emitting object and the sound detection object a same plural number of space recognition lines that spread in a plane and at predetermined angles from the straight line locating as a center, and calculates a third sound volume that is attenuated from either one of the first sound volume and the second sound volume in accordance with an attenuation ratio determined by the number of the space recognition lines having a same angle and intersecting with each other without being intercepted by the obstacle; and a sound volume control unit ( 207 ) coupled to the third volume calculation unit and being configured to output game sound based on the calculated third sound volume.