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    METHODS AND DEVICES FOR CODING SOUNDFIELD REPRESENTATION SIGNALS
    5.
    发明申请
    METHODS AND DEVICES FOR CODING SOUNDFIELD REPRESENTATION SIGNALS 有权

    公开(公告)号：US20210050022A1

    公开(公告)日：2021-02-18

    申请号：US16963489

    申请日：2019-01-17

    申请人： DOLBY INTERNATIONAL AB ,  DOLBY LABORATORIES LICENSING CORPORATION

    发明人： Kristofer KJOERLING ,  David S. MCGRATH ,  Heiko PURNHAGEN ,  Mark R.P. THOMAS

    IPC分类号： G10L19/008

    摘要： The present document describes a method (400) for encoding a soundfield representation (SR) input signal (101, 301) describing a soundfield at a reference position, wherein the SR input signal (101, 301) comprises a plurality of channels for a plurality of different directivity patterns of the soundfield at the reference position. The method (400) comprises extracting (401) one or more audio objects (103, 303) from the SR input signal (101, 301). Furthermore, the method (400) comprises determining (402) a residual signal (102, 302) based on the SR input signal (101, 301) and based on the one or more audio objects (103, 303). The method (400) also comprises performing joint coding of the one or more audio objects (103, 303) and/or the residual signal (102, 302). In addition, the method (400) comprises generating (403) a bitstream (701) based on data generated in the context of joint coding of the one or more audio objects (103, 303) and/or the residual signal (102, 302).

    DYNAMIC RANGE CONTROL FOR A WIDE VARIETY OF PLAYBACK ENVIRONMENTS
    9.
    发明申请
    DYNAMIC RANGE CONTROL FOR A WIDE VARIETY OF PLAYBACK ENVIRONMENTS 有权
    动态范围控制广泛的播放环境变化

    公开(公告)号：US20160227339A1

    公开(公告)日：2016-08-04

    申请号：US15098530

    申请日：2016-04-14

    申请人： DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

    发明人： Jeroen KOPPENS ,  Jeffrey RIEDMILLER ,  Kristofer KJOERLING ,  Alexander GROESCHEL ,  Holger HOERICH ,  Alan J. SEEFELDT

    IPC分类号： H04S7/00 ,  H04S1/00

    CPC分类号： G06F3/165 ,  G10L19/167 ,  G10L21/0324 ,  H03G3/3005 ,  H03G3/3089 ,  H03G7/002 ,  H03G7/007 ,  H03G9/005 ,  H03G9/12 ,  H04S1/00 ,  H04S7/30 ,  H04S2400/13

    摘要： In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.

    摘要翻译： 在音频编码器中，对于以源音频格式接收的音频内容，基于默认动态范围压缩（DRC）曲线生成默认增益，并且为非默认增益配置文件生成非默认增益。 基于默认收益和非默认收益，产生差异收益。 产生包括音频内容，默认DRC曲线和差分增益的音频信号。 在音频解码器中，根据音频信号识别默认的DRC曲线和差分增益。 根据默认的DRC曲线重新生成默认增益。 基于重新生成的默认增益和差分增益的组合，对从音频信号提取的音频内容执行操作。