公开(公告)号：AU2003223132A1

公开(公告)日：2003-11-10

申请号：AU2003223132

申请日：2003-04-25

Applicant: POSTECH FOUNDATION

Inventor： LEE JAY-MIN

IPC: H04R1/02 ,  H04R23/00 ,  H04R1/00 ,  H04R1/34

Abstract: A sound focus speaker adopting a gas-filled sound lens enhances efficiency of transferring sound from a source to target area and of protecting a spread of transferred sound. The sound focus speaker includes a gas-filled sound lens, sound sources for generating sound and a sound-absorption room for surrounding the sound lens and the sound sources. Sound emitted from the sound focus speaker is focused at specific distance to make a focus point and not spread to the outer of the focus point from forming a sound area.