公开(公告)号：EP2862166A1

公开(公告)日：2015-04-22

申请号：EP13728756.1

申请日：2013-06-14

申请人： Dolby International AB

发明人： FRIEDRICH, Tobias ,  WAGENBLASS, Tobias ,  LINZMEIER, Karsten ,  HOMM, Daniel ,  SPENGER, Claus-Christian ,  PURNHAGEN, Heiko

IPC分类号： G10L19/008 ,  G10L19/005

CPC分类号： G10L19/0017 ,  G10L19/005 ,  G10L19/008 ,  G10L19/22 ,  H04S3/008

摘要： A decoding system reconstructs an audio signal based on an input signal representing the audio signal by parametric coding or by n discretely coded channels. Parametric decoding proceeds on the basis of a core signal and mixing parameters controlling a spatial synthesis stage, which is supplied with a downmix signal. A controller is responsible for controlling the components of the decoding system, whether in steady-state parametric mode, steady-state discrete decoding mode and transitions between these. In defective frames of the input signal, which do not allow the mixing parameters to be decoded, the controller is configured to perform various error handling procedures including: parametric decoding using previous values of the mixing parameters; continuing parametric decoding for a limited duration, and/or outputting the core signal without spatial synthesis.

摘要翻译： 解码系统基于表示音频信号的输入信号通过参数编码或由n个离散编码的信道来重构音频信号。 基于核心信号和控制空间合成阶段的混合参数进行参数化解码，其被提供有下混合信号。 控制器负责控制解码系统的组件，无论是在稳态参数模式，稳态离散解码模式以及它们之间的转换。 在不允许混合参数被解码的输入信号的缺陷帧中，控制器被配置为执行各种错误处理过程，包括：使用混合参数的先前值进行参数解码; 在有限的持续时间内进行连续参数解码，和/或在没有空间合成的情况下输出核心信号。

公开(公告)号：EP2862166B1

公开(公告)日：2018-03-07

申请号：EP13728756.1

申请日：2013-06-14

申请人： Dolby International AB

发明人： FRIEDRICH, Tobias ,  WAGENBLASS, Tobias ,  LINZMEIER, Karsten ,  HOMM, Daniel ,  SPENGER, Claus-Christian ,  PURNHAGEN, Heiko

IPC分类号： G10L19/008 ,  G10L19/005

CPC分类号： G10L19/0017 ,  G10L19/005 ,  G10L19/008 ,  G10L19/22 ,  H04S3/008

摘要： A decoding system reconstructs an audio signal based on an input signal representing the audio signal by parametric coding or by n discretely coded channels. Parametric decoding proceeds on the basis of a core signal and mixing parameters controlling a spatial synthesis stage, which is supplied with a downmix signal. A controller is responsible for controlling the components of the decoding system, whether in steady-state parametric mode, steady-state discrete decoding mode and transitions between these. In defective frames of the input signal, which do not allow the mixing parameters to be decoded, the controller is configured to perform various error handling procedures including: parametric decoding using previous values of the mixing parameters; continuing parametric decoding for a limited duration, and/or outputting the core signal without spatial synthesis.