Protection method for anti channel error code of voice coder in 2.4kb/s SELP low speed |
Title： |
| Protection method for anti channel error code of voice coder in 2.4kb/s SELP low speed |
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Application Number： |
200710062864 |
Application Date： |
2007/01/19 |
Announcement Date： |
2007/07/25 |
Pub. Date： |
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Publication Number： |
101004915 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G10L 19/00G10L 19/14G10L 19/12G10L 13/00G10L 11/06G10L 21/02 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Tang Kun, Cui Huijuan, Peng Tan, Gong Chen, Li Ye, Hong Kan |
Key Words： |
Protection method, anti channel error code, voice coder, low speed |
Abstract： |
A method for protecting channel error code resistance ability of low speed vocoder includes applying improved Chinese plain code and BCH code to separately protect voice parameter in voiceless and voiced sound frames at coding end, using BCH code to recover relevant parameters of voiceless sound frame and using maximum post verification probability rule to recover parameter of voiceless sound accurately for voiced sound frame then using line spectrum to parameter anti-error code algorithm to recover line spectrum to parameter at decoding end. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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