公开(公告)号：US20230379626A1

公开(公告)日：2023-11-23

申请号：US18136860

申请日：2023-04-19

Applicant: Apple Inc.

Inventor： Yang LIU ,  Ashwat Kandasamy AMIRTHALINGAM ,  Onur I. ILKORUR ,  Thomas M. JENSEN ,  Oliver LEONHARDT ,  David W. ROBISON ,  Teemu P. SIPILA

IPC: H04R3/08 ,  H04R29/00 ,  H04R9/06

CPC classification number: H04R3/08 ,  H04R29/003 ,  H04R9/06

Abstract: Aspects of the subject technology relate to electronic devices having speakers. An electronic device may operate the speaker at or near one or more resonance frequencies of the speaker and/or the electronic device. This can allow the electronic device to efficiently eject an occlusion when the speaker is occluded by a fluid or other debris. For example, the electronic device may determine a resonance frequency by obtaining one or more electrical characteristics of an electronic component while the speaker is occluded, determine the resonance frequency based on the obtained electrical characteristic(s), and operate the speaker at a frequency that is based on the resonance frequency to eject the occlusion.

公开(公告)号：US20230379625A1

公开(公告)日：2023-11-23

申请号：US18136862

申请日：2023-04-19

Applicant: Apple Inc.

Inventor： David W. ROBISON ,  Charles C. HOYT ,  Justin D. CROSBY ,  Teemu P. SIPILA ,  Thomas M. JENSEN ,  Bryce D. WOLFSON

IPC: H04R3/04

CPC classification number: H04R3/04

Abstract: Aspects of the subject technology relate to electronic devices having speakers. An electronic device may operate the speaker to generate audio output at one or more resonance frequencies of the speaker and/or the electronic device. This can allow the electronic device to generate particularly loud audio outputs while reducing the power consumption used to generate those audio outputs. In order, for example, to help ensure that the audio output is generated at the resonance frequencies, the electronic device can determine the resonance frequencies prior to generating the audio outputs. For example, the electronic device may determine resonance frequencies by obtaining one or more electrical characteristics of an electronic component while operating the speaker, and determine the resonance frequencies based on the obtained electrical characteristics.

公开(公告)号：US20230379624A1

公开(公告)日：2023-11-23

申请号：US17750271

申请日：2022-05-20

Applicant: Apple Inc.

Inventor： Thomas M. JENSEN ,  Andrew P. BRIGHT ,  Ariel A. MASSIAS ,  Ethan R. DUNI ,  Hannes BREITSCHAEDEL ,  Max RASMUSSEN

IPC: H04R3/00 ,  H04R29/00

CPC classification number: H04R3/007 ,  H04R29/001

Abstract: Aspects of the subject technology relate to electronic devices having speakers. An electronic device may include speaker control circuitry for a speaker. The speaker control circuitry may include multiple parallel prediction blocks that share a single look-ahead delay, and that feed, in parallel, a single controller. The single controller can generate a joint modification to an audio signal based on the parallel outputs of the prediction blocks. The joint modification can then be applied to the audio signal to generate a speaker-protection audio signal that can be output by the speaker. The speaker control circuitry may also include a system modeler that models the speaker system of the electronic device based on feedback measured physical characteristics. In this way, a reduced control safety margin can be achieved by more accurate model predictors, which can allow the controller to safely drive the speaker system to its full capability.