Invention Grant
US08255207B2 Method and device for efficient frame erasure concealment in speech codecs
有权
语音编解码器中高效帧擦除隐藏的方法和设备
- Patent Title: Method and device for efficient frame erasure concealment in speech codecs
- Patent Title (中): 语音编解码器中高效帧擦除隐藏的方法和设备
-
Application No.: US12095224Application Date: 2006-12-27
-
Publication No.: US08255207B2Publication Date: 2012-08-28
- Inventor: Tommy Vaillancourt , Milan Jelinek , Philippe Gournay , Redwan Salami
- Applicant: Tommy Vaillancourt , Milan Jelinek , Philippe Gournay , Redwan Salami
- Applicant Address: CA Quebec
- Assignee: Voiceage Corporation
- Current Assignee: Voiceage Corporation
- Current Assignee Address: CA Quebec
- Agency: Fay Kaplun & Marcin, LLP
- International Application: PCT/CA2006/002146 WO 20061227
- International Announcement: WO2007/073604 WO 20070705
- Main IPC: G10L15/00
- IPC: G10L15/00

Abstract:
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.
Public/Granted literature
- US20110125505A1 Method and Device for Efficient Frame Erasure Concealment in Speech Codecs Public/Granted day:2011-05-26
Information query