发明名称 |
IMPROVED SPECTRAL PARAMETER SUBSTITUTION FOR THE FRAME ERROR CONCEALMENT IN A SPEECH DECODER |
摘要 |
The effects of bad frames received over a communications channel by a speech decoder are concealed by replacing the values of the spectral parameters of the bad frames (a bad frame being either a corrupted frame or a lost frame) with values based on an at least partly adaptive mean of recently received good frames, but in case of a corrupted frame (as opposed to a lost frame), using the bad frame itself if the bad frame meets a predetermined criterion. The aim of concealment is to find the most suitable parameters for the bad frame so that subjective quality of the synthesized speech is as high as possible. |
申请公布号 |
WO0235520(A3) |
申请公布日期 |
2002.07.04 |
申请号 |
WO2001IB01950 |
申请日期 |
2001.10.17 |
申请人 |
NOKIA CORPORATION;NOKIA INC. |
发明人 |
MAEKINEN, JARI;MIKKOLA, HANNU, J.;VAINIO, JANNE;ROTOLA-PUKKILA, JANI |
分类号 |
G10L13/00;G10L19/005;G10L19/04 |
主分类号 |
G10L13/00 |
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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