公开(公告)号：US10958229B2

公开(公告)日：2021-03-23

申请号：US16776297

申请日：2020-01-29

Applicant: Apple Inc.

Inventor： Frank Baumgarte ,  Eric A. Allamanche ,  Stefan K. O. Strommer

IPC: H03G3/20 ,  G10L21/0316 ,  G10L19/008 ,  H03G7/00

Abstract: An audio normalization gain value is applied to an audio signal to produce a normalized signal. The normalized signal is processed to compute dynamic range control (DRC) gain values in accordance with a selected one of several pre-defined DRC characteristics. The audio signal is encoded, and the DRC gain values are provided as metadata associated with the encoded audio signal. Several other embodiments are also described and claimed.

公开(公告)号：US10419853B2

公开(公告)日：2019-09-17

申请号：US15901624

申请日：2018-02-21

Applicant: Apple Inc.

Inventor： Sriram Hariharan ,  Baptiste P. Paquier ,  Eric A. Allamanche ,  Alon Paycher

IPC: H04R5/04 ,  H04R5/027 ,  H04R5/033 ,  H04R1/40 ,  H04S1/00 ,  H04R1/10

Abstract: A wireless headset includes first and second wireless earphone devices, each including a microphone. The first earphone device assembles a first group of audio packets, each of which includes a first low-resolution clock value, a first high-resolution clock value, and a sequence of first microphone samples, and transmits the first plurality of audio packets to the second wireless earphone device, as a slave device of a first wireless network. The second earphone device receives the first group of audio packets from the first wireless earphone device, assembles a second group of audio packets, each of which includes a second low-resolution clock value, a second high-resolution clock value, and a sequence of second microphone samples, and transmits the first and second groups of audio packets to an external device. Other aspects are also described and claimed.

公开(公告)号：US20190181822A1

公开(公告)日：2019-06-13

申请号：US16269866

申请日：2019-02-07

Applicant: Apple Inc.

Inventor： Tomlinson M. Holman ,  Frank M. Baumgarte ,  Eric A. Allamanche

IPC: H03G3/30 ,  H04N21/81 ,  H04R27/02 ,  H04N21/439 ,  G10L19/008

Abstract: An audio encoding device and an audio decoding device are described herein. The audio encoding device may examine a set of audio channels/channel groups representing a piece of sound program content and produce a set of ducking values to associate with one of the channels/channel groups. During playback of the piece of sound program content, the ducking values may be applied to all other channels/channel groups. Application of these ducking values may cause (1) the reduction in dynamic range of ducked channels/channel groups and/or (2) movement of channels/channel groups in the sound field. This ducking may improve intelligibility of audio in the non-ducked channel/channel group. For instance, a narration channel/channel group may be more clearly heard by listeners through the use of selective ducking of other channels/channel groups during playback.

公开(公告)号：US10142423B2

公开(公告)日：2018-11-27

申请号：US15258753

申请日：2016-09-07

Applicant: Apple Inc.

Inventor： Luciano M. Verger ,  Ajoy K. Singh ,  Christopher M. Garrido ,  Najeeb M. Abdulrahiman ,  Ming Jin ,  Anil G. Naik ,  Deepak Chitlur Lakshman ,  Srinivasan Vasudevan ,  David L. Biderman ,  Gurtej Singh Chandok ,  Patrick Miauton ,  Eric A. Allamanche

IPC: H04L29/08 ,  H04W76/23 ,  H04L29/06 ,  H04W36/26 ,  H04L12/26 ,  H04W88/04 ,  H04W36/14 ,  H04W84/12

Abstract: Methods and apparatus to manage communication sessions to handover between a direct connection at a secondary wireless device and a relayed connection to the secondary wireless device via a primary wireless device. A connection manager of a secondary wireless device can trigger transfer of a communication session based on measurements of performance metrics for the communication session. Upon detection of performance degradation in a local connection or a backhaul connection or both, the connection manager of the secondary wireless device can determine proximity of and/or capabilities for connections of the primary wireless device and instigate transfer of the communication session between different connection types, such as between a direct connection and a relayed connection. The transfer of the communication session can occur without user intervention or in response to input from the user without interrupting or reestablishing the communication session.

公开(公告)号：US09767827B2

公开(公告)日：2017-09-19

申请号：US14502622

申请日：2014-09-30

Applicant: Apple Inc.

Inventor： Baptiste P. Paquier ,  Anthony J. Guetta ,  Aram M. Lindahl ,  Eric A. Allamanche

IPC: G10L21/00 ,  G10L25/48 ,  H04L29/06

CPC classification number: G10L25/48 ,  H04L65/604 ,  H04L65/605

Abstract: Unwanted audio, such as explicit language, may be removed during audio playback. An audio player may identify and remove unwanted audio while playing an audio stream. Unwanted audio may be replaced with alternate audio, such as non-explicit lyrics, a “beep”, or silence. Metadata may be used to describe the location of unwanted audio within an audio stream to enable the removal or replacement of the unwanted audio with alternate audio. An audio player may switch between clean and explicit versions of a recording based on the locations described in the metadata. The metadata, as well as both the clean and explicit versions of the audio data, may be part of a single audio file, or the metadata may be separate from the audio data. Additionally, real-time recognition analysis may be used to identify unwanted audio during audio playback.

公开(公告)号：US09704497B2

公开(公告)日：2017-07-11

申请号：US14792373

申请日：2015-07-06

Applicant: Apple Inc.

Inventor： Simon K. Porter ,  Eric A. Allamanche ,  Richard M. Powell

IPC: G10L19/032 ,  H04R29/00 ,  H04R3/00

CPC classification number: G10L19/032 ,  G10L19/26 ,  G10L21/0208 ,  H04R3/007 ,  H04R29/001 ,  H04R2430/03

Abstract: Method of audio power reduction and thermal mitigation using psychoacoustic techniques starts by receiving a decoded audio signal in a reproduction system. Decoded audio signal is a signal that is decompressed and to be played back by a speaker. A masking curve is generated based on psychoacoustic models and the decoded audio signal. The masking curve is applied to the decoded audio signal to remove unheard frequencies and to generate a power-reduced audio signal. Other embodiments are also described.

公开(公告)号：US09654076B2

公开(公告)日：2017-05-16

申请号：US14613203

申请日：2015-02-03

Applicant: Apple Inc.

Inventor： Tomlinson M. Holman ,  Frank M. Baumgarte ,  Eric A. Allamanche

IPC: H03G3/30 ,  G10L19/008 ,  H04N21/439 ,  H04N21/81 ,  H04R27/02

CPC classification number: H03G3/3089 ,  G10L19/008 ,  H04N21/4396 ,  H04N21/8106 ,  H04R27/02 ,  H04R2227/003 ,  H04R2227/009

Abstract: An audio encoding device and an audio decoding device are described herein. The audio encoding device may examine a set of audio channels/channel groups representing a piece of sound program content and produce a set of ducking values to associate with one of the channels/channel groups. During playback of the piece of sound program content, the ducking values may be applied to all other channels/channel groups. Application of these ducking values may cause (1) the reduction in dynamic range of ducked channels/channel groups and/or (2) movement of channels/channel groups in the sound field. This ducking may improve intelligibility of audio in the non-ducked channel/channel group. For instance, a narration channel/channel group may be more clearly heard by listeners through the use of selective ducking of other channels/channel groups during playback.