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Title:
A METHOD AND DEVICE FOR ACCOMPLISHING SPEECH DECODING IN A SPEECH DECODER
Document Type and Number:
WIPO Patent Application WO/2008/089696
Kind Code:
A1
Abstract:
A decoding method includes: receiving data frames from a coding end, if occurring a bad frame, computing and determining a pitch lag parameter of the bad frame, performing the decoding operation according to the determined pitch lag parameter of the bad frame, obtaining the decoded data, in which the processing procedure for determining the pitch lag parameter of the bad frame includes: firstly determining the number of successive bad frames occurred and the pitch lag parameter of previous frame, then adjusting the pitch lag parameter of said previous frame according to the number of said successive bad frames and a predetermined adjustment strategy, computing and obtaining the pitch lag parameter of the current bad frame; said predetermined adjustment strategy is that the pitch lag parameter of the current bad frame which is determined following the number change of successive bad frames fluctuates in a range of setting value.

Inventors:
XU JIANFENG (CN)
XU LIJING (CN)
ZHANG QING (CN)
LI WEI (CN)
SANG SHENGHU (CN)
DU ZHENGZHONG (CN)
HU CHEN (CN)
Application Number:
PCT/CN2008/070142
Publication Date:
July 31, 2008
Filing Date:
January 18, 2008
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
XU JIANFENG (CN)
XU LIJING (CN)
ZHANG QING (CN)
LI WEI (CN)
SANG SHENGHU (CN)
DU ZHENGZHONG (CN)
HU CHEN (CN)
International Classes:
G10L19/00; G10L19/005; G10L25/90; H03M13/00; H04L1/00; G10L19/08; G10L19/09; G10L19/10; G10L19/107
Domestic Patent References:
WO2002037475A12002-05-10
Foreign References:
CN1168751A1997-12-24
CN1489762A2004-04-14
CN1272200A2000-11-01
CN1134581A1996-10-30
CN1535461A2004-10-06
CN1359513A2002-07-17
US6055497A2000-04-25
US5862518A1999-01-19
Other References:
See also references of EP 2081186A4
Attorney, Agent or Firm:
BEIJING TINGLI PATENT AGENCY (Jinyu Mansion No.129 Xuanwumen,Xi Cheng District, Beijing 1, CN)
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