Samsung patented an array speaker to send directed sound in specific directions. If the array speaker works well when it is introduced in the market, it will relieve smartphone users of their earphones.
(Patent US 8,953,819 B2, Method and apparatus for focusing sound using array speaker )
Method and apparatus for focusing sound using array speaker
US 8,953,819 B2
Inventors: Ko; Sang-chul (Seoul, KR), Kim; Young-tae (Seongnam-si, KR), Kim; Jung-ho (Yongin-si, KR)
Name City State Country Type
Assignee: Samsung Electronics Co., Ltd. (Suwon-Si, KR)
Family ID: 1000000917140
Appl. No.: 12/076,277
Filed: March 14, 2008
Provided is a method and apparatus for focusing sound using an array speaker system. The method includes generating a plurality of delayed signals to be focused to a predetermined position from an input signal, filtering a low-frequency signal having a frequency that is lower than a reference frequency from the delayed signals, generating low-frequency focusing signals divided into 2 groups by adjusting a gain of the filtered low-frequency signal, and applying the low-frequency focusing signals divided into the 2 groups to speaker units of the array speaker system at both sides with respect to a center portion of the array speaker system and outputting the low-frequency focusing signals through the speaker units. In this way, the performance of sound focusing for the low-frequency signal can be improved and thus a listener located a predetermined distance from and in a predetermined direction relative to the array speaker system can clearly listen to the low-frequency focusing signals.