Patent ID: 9743186
Date: 2017-08-22
CPC Classifications: H04R,H04S

Claim:
1. A sound reproduction device comprising: a loudspeaker; and a superdirective speaker, wherein: the loudspeaker is configured so that a sound pressure of audible sound produced therefrom decreases as the sound travels farther away from the loudspeaker, the superdirective speaker is configured so that a sound pressure of audible sound produced therefrom has a peak at a predetermined distance from the superdirective speaker, and is configured to use an ultrasonic wave as a carrier wave, and the loudspeaker and the superdirective speaker are positioned such that a first wave emitted from the loudspeaker and a second wave emitted from the superdirective speaker directly reach a position of a listener, wherein the peak is produced at the position of the listener to allow the listener to hear the sound from the superdirective speaker more clearly than the sound from the loudspeaker.