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    Audio Control Using Auditory Event Detection
    16.
    发明申请
    Audio Control Using Auditory Event Detection 审中-公开

    公开(公告)号：US20200144979A1

    公开(公告)日：2020-05-07

    申请号：US16729468

    申请日：2019-12-29

    申请人： Dolby Laboratories Licensing Corporation

    发明人： Brett G. CROCKETT ,  Alan J. SEEFELDT

    IPC分类号： H03G3/30 ,  G10L25/21 ,  G10L21/038 ,  H04R3/04 ,  H03G1/00 ,  H03G9/00 ,  H03G7/00

    摘要： In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.

    ADAPTIVE DIFFUSE SIGNAL GENERATION IN AN UPMIXER
    18.
    发明申请
    ADAPTIVE DIFFUSE SIGNAL GENERATION IN AN UPMIXER 有权
    自适应信号发生在自适应信号中

    公开(公告)号：US20160241982A1

    公开(公告)日：2016-08-18

    申请号：US15025074

    申请日：2014-09-26

    申请人： DOLBY LABORATORIES LICENSING CORPORATION

    发明人： Alan J. SEEFELDT ,  Mark S. VINTON ,  C. Phillip BROWN

    IPC分类号： H04S5/00 ,  G10L19/008 ,  G10L19/032 ,  H04S7/00

    CPC分类号： H04S5/005 ,  G10L19/008 ,  G10L19/032 ,  H04S7/30 ,  H04S2400/01 ,  H04S2400/11

    摘要： An audio processing system, such as an upmixer, may be capable of separating diffuse and non-diffuse portions of N input audio signals. The upmixer may be capable of detecting instances of transient audio signal conditions. During instances of transient audio signal conditions, the up-mixer may be capable of adding a signal-adaptive control to a diffuse signal expansion process in which M audio signals are output. The upmixer may vary the diffuse signal expansion process over time such that during instances of transient audio signal conditions the diffuse portions of audio signals may be distributed substantially only to output channels spatially close to the input channels. During instances of non-transient audio signal conditions, the diffuse portions of diffuse portions of audio signals may be distributed in a substantially uniform manner.

    摘要翻译： 诸如上混频器的音频处理系统可以能够分离N个输入音频信号的漫射和非漫射部分。 上混频器可能能够检测瞬态音频信号状况的实例。 在瞬态音频信号条件的情况下，上混频器可能能够对其中输出M个音频信号的扩散信号扩展处理添加信号自适应控制。 上升混频器可以随时间改变扩散信号扩展过程，使得在瞬态音频信号条件的情况下，音频信号的扩散部分可以基本上仅分布到空间上靠近输入信道的输出信道。 在非瞬态音频信号条件的情况下，音频信号的扩散部分的扩散部分可以以基本均匀的方式分布。

    DYNAMIC RANGE CONTROL FOR A WIDE VARIETY OF PLAYBACK ENVIRONMENTS
    19.
    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。