发明名称 |
METHOD AND APPARATUS FOR CONCEALING LOST FRAME |
摘要 |
A method for concealing lost frame includes: using history signals before the lost frame that corresponds to a lost MDCT coefficient to generate a first synthesized signal when it is detected that the MDCT coefficient is lost; performing fast IMDCT for the first synthesized signal to obtain an IMDCT coefficient corresponding to a lost MDCT coefficient; and using the IMDCT coefficient corresponding to the lost MDCT coefficient and an IMDCT coefficient adjacent to the IMDCT coefficient corresponding to the lost MDCT coefficient to perform TDAC and obtain signals corresponding to the lost frame. An apparatus for concealing lost frame is also disclosed herein. The method and the apparatus for concealing lost frames in the embodiments of the present invention make full use of the received partial signals to recover high-quality voice signals and improve the QoS.
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申请公布号 |
US2011044323(A1) |
申请公布日期 |
2011.02.24 |
申请号 |
US20100913245 |
申请日期 |
2010.10.27 |
申请人 |
HUAWEI TECHNOLOGIES CO., LTD. |
发明人 |
ZHAN WUZHOU;WANG DONGQI |
分类号 |
H04L12/66 |
主分类号 |
H04L12/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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