METADATA FOR DUCKING CONTROL
    2.
    发明申请

    公开(公告)号:US20180006621A1

    公开(公告)日:2018-01-04

    申请号:US15595792

    申请日:2017-05-15

    Applicant: Apple Inc.

    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.

    METADATA FOR DUCKING CONTROL
    3.
    发明申请
    METADATA FOR DUCKING CONTROL 有权
    用于控制的元数据

    公开(公告)号:US20150280676A1

    公开(公告)日:2015-10-01

    申请号:US14613203

    申请日:2015-02-03

    Applicant: Apple Inc.

    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/频道组应用于所述其他频道。 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,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。

    METADATA FOR LOUDNESS AND DYNAMIC RANGE CONTROL
    8.
    发明申请
    METADATA FOR LOUDNESS AND DYNAMIC RANGE CONTROL 有权
    元素和动态范围控制的元数据

    公开(公告)号:US20140294200A1

    公开(公告)日:2014-10-02

    申请号:US14225950

    申请日:2014-03-26

    Applicant: Apple Inc.

    CPC classification number: H03G3/20 G10L19/008 G10L21/0316 H03G7/007

    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.

    Abstract translation: 将音频归一化增益值应用于音频信号以产生归一化信号。 处理归一化信号以根据几个预定义的DRC特性中选择的一个来计算动态范围控制(DRC)增益值。 音频信号被编码,并且提供DRC增益值作为与编码的音频信号相关联的元数据。 还描述和要求保护的其它几个实施例。

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