Provided is a device for improving a bloodstream volume in hearing-area of a brain, by means of which a further training effect can be expected for a listener with defective hearing. The device is provided with a three-dimensional acoustic system that forms a virtual sound field as a virtual three-dimensional spatial expanse around the listener, and a virtual sound source reproducing means that gives a virtual sound source to which the listener can repeatedly listen under the three-dimensional acoustic system environment and which gives the listener a sound image by such a virtual sound source that a sound with a direction and a far or near distance to the listener in a virtual sound field is generated at a predetermined virtual position.
DEVICE FOR IMPROVING BLOODSTREAM VOLUME IN HEARING-AREA OF BRAIN, AND VIRTUAL SOUND SOURCE USED FOR THE SAME