公开(公告)号：WO2015148046A1

公开(公告)日：2015-10-01

申请号：PCT/US2015/017830

申请日：2015-02-26

Applicant: APPLE INC.

Inventor： HOLMAN, Tomlinson M. ,  BAUMGARTE, Frank M. ,  ALLAMANCHE, Eric A.

IPC: G10L19/008

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.

Abstract translation: 这里描述了音频编码装置和音频解码装置。 音频编码设备可以检查表示一段声音节目内容的一组音频频道/频道组，并产生一组与频道/频道组中的一个相关联的候选值。 在播放声音节目内容期间，可以将所有其他频道/频道组应用于所述下列值。 这些躲避值的应用可能会导致（1）下行通道/通道组的动态范围的减少和/或（2）声场中通道/通道组的移动。 这种躲避可能会提高非庇护频道/频道组中音频的清晰度。 例如，听众可以通过在播放期间通过使用其他频道/频道组的选择性躲避来更清楚地听到旁白频道/频道组。

公开(公告)号：WO2015088697A1

公开(公告)日：2015-06-18

申请号：PCT/US2014/065295

申请日：2014-11-12

Applicant: APPLE INC.

Inventor： BAUMGARTE, Frank M.

IPC: H03G7/00 ,  G10L19/008 ,  G10L19/16

CPC classification number: H03G3/20 ,  H03G3/001 ,  H03G3/32 ,  H03G7/007 ,  H03G11/00

Abstract: A system and method is provided for converting Dynamic Range Control/Compression (DRC) gain values into a spline representation that is compatible with the current standards. The system and method may: 1) minimize the bitrate for encoding and/or 2) minimize the approximation error between reference gain and interpolation values. A strategy for bitrate minimization may be the reduction of the number of spline nodes since gain and slope information must be transmitted for each node. Accordingly, an efficient heuristics based approach is provided that reduces the number of spline nodes needed to represent a series of DRC gain values using interpolation while accounting for overshoots and other inaccuracies.

Abstract translation: 提供了一种用于将动态范围控制/压缩（DRC）增益值转换为与当前标准兼容的样条表示的系统和方法。 该系统和方法可以：1）最小化用于编码的比特率和/或2）最小化参考增益和内插值之间的近似误差。 用于比特率最小化的策略可以是减少花键节点的数量，因为必须为每个节点传输增益和斜率信息。 因此，提供了一种基于有效启发法的方法，其减少了使用插值来表示一系列DRC增益值所需的样条节点的数量，同时考虑了过冲和其他不准确性。

公开(公告)号：WO2014160895A1

公开(公告)日：2014-10-02

申请号：PCT/US2014/032079

申请日：2014-03-27

Applicant: APPLE INC.

Inventor： BAUMGARTE, Frank M.

IPC: G10L19/16 ,  G10L19/008

CPC classification number: G10L19/02 ,  G10L19/008 ,  G10L19/032 ,  G10L19/167 ,  H03G7/002 ,  H03G7/007

Abstract: A system for encoding and applying Dynamic Range Control/Compression (DRC) gain values to a piece of sound program content is described. In particular, a set of DRC gain values representing a DRC gain curve for the piece of content may be divided into frames corresponding to frames of the piece of content. A set of fields may be included with an audio signal representing the piece of content. The additional fields may represent the DRC gain values using linear or spline interpolation. The additional fields may include 1) an initial gain value for each DRC frame, 2) a set of slope values at particular points in the DRC curve, 3) a set of time delta values for each consecutive pair of slope values, and/or 4) one or more gain delta values representing changes of DRC gain values in the DRC gain curve between points of the slope values.

Abstract translation: 描述了将动态范围控制/压缩（DRC）增益值编码并应用于一段声音节目内容的系统。 特别地，表示内容片段的DRC增益曲线的一组DRC增益值可以被划分为与该片内容相对应的帧。 一组字段可以包括表示该片内容的音频信号。 附加字段可以表示使用线性或样条插值的DRC增益值。 附加字段可以包括1）每个DRC帧的初始增益值，2）DRC曲线中特定点处的一组斜率值，3）每个连续的斜率值对的一组时间增量值，和/或 4）一个或多个增益增量值，表示在斜率值的点之间的DRC增益曲线中的DRC增益值的变化。

公开(公告)号：EP3364412A1

公开(公告)日：2018-08-22

申请号：EP18166712.2

申请日：2014-03-27

Applicant: Apple Inc.

Inventor： BAUMGARTE, Frank M.

IPC: G10L19/16 ,  G10L19/008 ,  H03G7/00

CPC classification number: G10L19/02 ,  G10L19/008 ,  G10L19/032 ,  G10L19/167 ,  H03G7/002 ,  H03G7/007

Abstract: A system for encoding and applying Dynamic Range Control/Compression (DRC) gain values to a piece of sound program content is described. In particular, a set of DRC gain values representing a DRC gain curve for the piece of content may be divided into frames corresponding to frames of the piece of content. A set of fields may be included with an audio signal representing the piece of content. The additional fields may represent the DRC gain values using linear or spline interpolation. The additional fields may include 1) an initial gain value for each DRC frame, 2) a set of slope values at particular points in the DRC curve, 3) a set of time delta values for each consecutive pair of slope values, and/or 4) one or more gain delta values representing changes of DRC gain values in the DRC gain curve between points of the slope values.

公开(公告)号：EP2956937A1

公开(公告)日：2015-12-23

申请号：EP14723227.6

申请日：2014-03-27

Applicant: Apple Inc.

Inventor： BAUMGARTE, Frank M.

IPC: G10L19/16 ,  G10L19/008

CPC classification number: G10L19/02 ,  G10L19/008 ,  G10L19/032 ,  G10L19/167 ,  H03G7/002 ,  H03G7/007

Abstract: A system for encoding and applying Dynamic Range Control/Compression (DRC) gain values to a piece of sound program content is described. In particular, a set of DRC gain values representing a DRC gain curve for the piece of content may be divided into frames corresponding to frames of the piece of content. A set of fields may be included with an audio signal representing the piece of content. The additional fields may represent the DRC gain values using linear or spline interpolation. The additional fields may include 1) an initial gain value for each DRC frame, 2) a set of slope values at particular points in the DRC curve, 3) a set of time delta values for each consecutive pair of slope values, and/or 4) one or more gain delta values representing changes of DRC gain values in the DRC gain curve between points of the slope values.

Abstract translation: 描述了用于将动态范围控制/压缩（DRC）增益值编码并应用于一段声音节目内容的系统。 特别地，表示内容片段的DRC增益曲线的一组DRC增益值可以被划分成与该片内容相对应的帧。 一组字段可以包括表示内容的音频信号。 附加字段可以使用线性或样条插值表示DRC增益值。 附加字段可以包括1）每个DRC帧的初始增益值，2）DRC曲线中特定点处的一组斜率值，3）每个连续的斜率值对的一组时间增量值，和/或 4）一个或多个增益增量值，表示在斜率值的点之间的DRC增益曲线中的DRC增益值的变化。

公开(公告)号：EP3074973B1

公开(公告)日：2019-07-31

申请号：EP15710649.3

申请日：2015-02-26

Applicant: Apple Inc.

Inventor： HOLMAN, Tomlinson M. ,  BAUMGARTE, Frank M. ,  ALLAMANCHE, Eric A.

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

公开(公告)号：EP2956937B1

公开(公告)日：2018-06-13

申请号：EP14723227.6

申请日：2014-03-27

Applicant: Apple Inc.

Inventor： BAUMGARTE, Frank M.

IPC: G10L19/16 ,  G10L19/008 ,  H03G7/00

CPC classification number: G10L19/02 ,  G10L19/008 ,  G10L19/032 ,  G10L19/167 ,  H03G7/002 ,  H03G7/007

Abstract: A system for encoding and applying Dynamic Range Control/Compression (DRC) gain values to a piece of sound program content is described. In particular, a set of DRC gain values representing a DRC gain curve for the piece of content may be divided into frames corresponding to frames of the piece of content. A set of fields may be included with an audio signal representing the piece of content. The additional fields may represent the DRC gain values using linear or spline interpolation. The additional fields may include 1) an initial gain value for each DRC frame, 2) a set of slope values at particular points in the DRC curve, 3) a set of time delta values for each consecutive pair of slope values, and/or 4) one or more gain delta values representing changes of DRC gain values in the DRC gain curve between points of the slope values.

公开(公告)号：EP3074973A1

公开(公告)日：2016-10-05

申请号：EP15710649.3

申请日：2015-02-26

Applicant: Apple Inc.

Inventor： HOLMAN, Tomlinson M. ,  BAUMGARTE, Frank M. ,  ALLAMANCHE, Eric A.

IPC: G10L19/008

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.

Abstract translation: 本文描述了音频编码装置和音频解码装置。 音频编码设备可以检查表示一段声音节目内容的一组音频频道/频道组，并产生一组与频道/频道组中的一个相关联的候选值。 在播放声音节目内容期间，可以将所有其他频道/频道组应用于所述其他频道。 这些躲避值的应用可能会导致（1）低通道/通道组的动态范围减小和/或（2）声场中通道/通道组的移动。 这种躲避可能会提高非庇护频道/频道组中音频的清晰度。 例如，通过在播放期间通过使用其他频道/频道组的选择性躲避，听众可以更清楚地听到旁白频道/频道组。