公开(公告)号：US10148800B1

公开(公告)日：2018-12-04

申请号：US15720709

申请日：2017-09-29

Applicant: Apple Inc.

Inventor： Austin Frederickson ,  Timothy E. Sandrik ,  Mitchell Heschke ,  Lee Hamstra

IPC: H04M1/03 ,  H04B1/03 ,  H04R1/28

Abstract: An electronic device includes an internal microphone that is located remotely from a microphone aperture formed in the enclosure of the electronic device. An acoustic chamber is formed within the electronic device to couple the microphone to the microphone aperture. The acoustic chamber is designed with a particular length to volume ratio that amplifies a particular range of frequencies such that the microphone maintains equal sensitivity to a desired frequency band.

公开(公告)号：US09949057B2

公开(公告)日：2018-04-17

申请号：US15256384

申请日：2016-09-02

Applicant: Apple Inc.

Inventor： Ryan J. Mihelich ,  Tomlinson Holman ,  Alexander P. Niemeyer ,  Timothy E. Sandrik

IPC: H04R5/02 ,  H04S7/00 ,  H04R3/12

CPC classification number: H04S7/307 ,  H04R3/12 ,  H04R5/02 ,  H04R2460/07 ,  H04R2499/11 ,  H04R2499/15 ,  H04S7/302

Abstract: A portable electronic device includes at least four speakers spaced apart from one another. An audio processor attenuates a high frequency portion of a left audio signal and a right audio signal to provide a processed left audio signal and a processed right audio signal. An audio router directs the left audio signal to only a first speaker, the right audio signal to only a second speaker, the processed left audio signal to a third speaker, and the processed right audio signal to a fourth speaker. The audio signals may be directed according to the orientation of the device. The cutoff frequency for attenuating the high frequency portion of the audio signals may be responsive to the orientation of the device. In other embodiments, the high frequency portion of the audio signals may be decorrelated to produce signals with high frequency portions for all speakers.

公开(公告)号：US20170070839A1

公开(公告)日：2017-03-09

申请号：US15256384

申请日：2016-09-02

Applicant: Apple Inc.

Inventor： Ryan J. Mihelich ,  Tomlinson Holman ,  Alexander P. Niemeyer ,  Timothy E. Sandrik

IPC: H04S7/00 ,  H04R5/02 ,  G10L19/008 ,  H04R3/12

CPC classification number: H04S7/307 ,  H04R3/12 ,  H04R5/02 ,  H04R2460/07 ,  H04R2499/11 ,  H04R2499/15 ,  H04S7/302

Abstract: A portable electronic device includes at least four speakers spaced apart from one another. An audio processor attenuates a high frequency portion of a left audio signal and a right audio signal to provide a processed left audio signal and a processed right audio signal. An audio router directs the left audio signal to only a first speaker, the right audio signal to only a second speaker, the processed left audio signal to a third speaker, and the processed right audio signal to a fourth speaker. The audio signals may be directed according to the orientation of the device. The cutoff frequency for attenuating the high frequency portion of the audio signals may be responsive to the orientation of the device. In other embodiments, the high frequency portion of the audio signals may be decorrelated to produce signals with high frequency portions for all speakers.

Abstract translation: 便携式电子设备包括彼此间隔开的至少四个扬声器。 音频处理器衰减左音频信号和右音频信号的高频部分，以提供经处理的左音频信号和已处理的右音频信号。 音频路由器将左音频信号仅指向第一扬声器，将右音频信号仅引导到第二扬声器，将经处理的左音频信号引导到第三扬声器，并将处理的右音频信号引导到第四扬声器。 音频信号可以根据设备的方向被引导。 用于衰减音频信号的高频部分的截止频率可以响应于装置的取向。 在其他实施例中，音频信号的高频部分可以去相关以产生用于所有扬声器的高频部分的信号。