公开(公告)号：US20110125505A1

公开(公告)日：2011-05-26

申请号：US12095224

申请日：2006-12-28

申请人： Tommy Vaillancourt ,  Milan Jelinek ,  Philleppe Gournay ,  Redwan Salami

发明人： Tommy Vaillancourt ,  Milan Jelinek ,  Philleppe Gournay ,  Redwan Salami

IPC分类号： G10L19/00

CPC分类号： G10L19/005

摘要： A method and device for concealing frame erasures caused by frames of an encoded sound signal erased during transmission from an encoder to a decoder and for recovery of the decoder after frame erasures comprise, in the encoder, determining concealment/recovery parameters including at least phase information related to frames of the encoded sound signal. The concealment/recovery parameters determined in the encoder are transmitted to the decoder and, in the decoder, frame erasure concealment is conducted in response to the received concealment/recovery parameters. The frame erasure concealment comprises resynchronizing, in response to the received phase information, the erasure-concealed frames with corresponding frames of the sound signal encoded at the encoder. When no concealment/recovery parameters are transmitted to the decoder, a phase information of each frame of the encoded sound signal that has been erased during transmission from the encoder to the decoder is estimated in the decoder. Also, frame erasure concealment is conducted in the decoder in response to the estimated phase information, wherein the frame erasure concealment comprises resynchronizing, in response to the estimated phase information, each erasure-concealed frame with a corresponding frame of the sound signal encoded at the encoder.

摘要翻译： 一种用于隐藏在从编码器到解码器的传输期间被擦除的编码声音信号的帧引起的帧擦除并且在帧擦除之后恢复解码器的方法和装置在编码器中包括确定包括至少相位信息的隐藏/恢复参数 与编码的声音信号的帧相关。 在编码器中确定的隐藏/恢复参数被发送到解码器，并且在解码器中，响应于接收到的隐藏/恢复参数进行帧擦除隐藏。 帧擦除隐藏包括响应于接收到的相位信息重新同步擦除隐藏的帧与在编码器处编码的声音信号的相应帧。 当没有隐藏/恢复参数被发送到解码器时，在解码器中估计在从编码器到解码器的传输期间被擦除的编码声音信号的每帧的相位信息。 此外，响应于估计的相位信息在解码器中进行帧擦除隐藏，其中帧擦除隐藏包括响应于估计的相位信息重新同步每个被擦除隐藏的帧与在该编码的声音信号的相应帧 编码器。