公开(公告)号：US20180350341A1

公开(公告)日：2018-12-06

申请号：US16011900

申请日：2018-06-19

Applicant: Apple Inc.

Inventor： Simon K. PORTER ,  Sylvain J. CHOISEL ,  John C. STEWART

IPC: G10K15/12 ,  H04R29/00 ,  H04R3/12

CPC classification number: G10K15/12 ,  G10K11/34 ,  H04R3/12 ,  H04R29/002 ,  H04R2201/401 ,  H04S7/301 ,  H04S7/305

Abstract: A method for using a loudspeaker array that is housed in a loudspeaker cabinet to present audio content to a listener in a room includes receiving (1) an audio channel that includes audio content and (2) acoustical characteristics of the room. The method also produces (1) a first beamformer input signal from the audio channel and (2) a second beamformer input signal and a third beamformer input signal by decorrelating the audio channel and adjusting the audio channel in accordance with the acoustical characteristics of the room. The second and third beamformer input signals are different de-correlated versions of the audio channel. The method also generates driver signals from the first, second, and third beamformer input signals to drive the loudspeaker array to produce a main beam, a first ambient beam, and a second ambient beam, respectively. Other embodiments are also described and claimed.