公开(公告)号：AU2014236850A1

公开(公告)日：2015-10-08

申请号：AU2014236850

申请日：2014-03-13

Applicant: APPLE INC

Inventor： JOHNSON MARTIN E ,  ISAAC RONALD N

IPC: H04S7/00

Abstract: An audio receiver that performs crosstalk cancellation using a speaker array is described. The audio receiver detects the location of a listener in a room and processes a piece of sound program content to be output through the speaker array using one or more beam pattern matrices. The beam pattern matrices are generated according to one or more constraints. The constraints may include increasing a right channel and decreasing a left channel at the right ear of the listener, increasing a left channel and decreasing a right channel at the left ear of the listener, and decreasing sound in all other areas of the room. These constraints cause the audio receiver to beam sound primarily towards the listener and not in other areas of the room such that crosstalk cancellation is achieved with minimal effects due to changes to the frequency response of the room. Other embodiments are also described.

公开(公告)号：GB2510772A

公开(公告)日：2014-08-13

申请号：GB201409259

申请日：2012-09-28

Applicant: APPLE INC

Inventor： ISAAC RONALD NADIM ,  JOHNSON MARTIN E

IPC: H04R3/00 ,  H04M9/08 ,  H04R3/02

Abstract: Devices and methods are disclosed that allow for selective acoustic near-field nulls for microphone arrays. One embodiment may take the form of an electronic device including a speaker and a microphone array. The microphone array may include a first microphone positioned a first distance from the speaker and a second microphone positioned a second distance from the speaker. The first and second microphones are configured to receive an acoustic signal. The microphone array further includes a complex vector filter coupled to the second microphone. The complex vector filter is applied to an output signal of the second microphone to generate an acoustic sensitivity pattern for the array that provides an acoustic null at the location of the speaker.

公开(公告)号：AU2012238200A1

公开(公告)日：2013-07-04

申请号：AU2012238200

申请日：2012-10-04

Applicant: APPLE INC

Inventor： DIX GORDON R ,  CROSBY JUSTIN DERRY ,  JOHNSON MARTIN E ,  MORISHITA MICHAEL KAI

IPC: H04R1/00

Abstract: 04860.P12537AU An electronic audio device including an enclosure having an acoustic output opening and a speaker positioned within the enclosure. The speaker and the acoustic output opening are acoustically coupled by an acoustic output pathway. The acoustic output pathway includes a damping chamber to dampen a resonance frequency of the acoustic output pathway. The speaker is between the damping chamber and the acoustic output opening. (9 \CNN (D0C o )C I C)0