Vocoder fundamental tone cycle parameter channel error code resisting method |
Title： |
| Vocoder fundamental tone cycle parameter channel error code resisting method |
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Application Number： |
200610165245 |
Application Date： |
2006/12/15 |
Announcement Date： |
2007/06/06 |
Pub. Date： |
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Publication Number： |
1975861 |
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 19/04, G10L 19/14, G10L 19/00 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Cui Huijuan, Tang Kun, Li Ye, Hong Kan |
Key Words： |
Vocoder, fundamental tone cycle, resisting, channel error code |
Abstract： |
A method for resisting channel bit error of vocoder basic-tone periodical parameter includes obtaining basic-tone period and clear voiced sound parameter of current frame at decoding end, comparing basic-tone parameter with last frame if current frame is not clear voiced sound and judging that basic-tone parameter transmission of current frame is error if D-value of the two is over a set threshold, reversing each bit being presented in binary system of current frame basic-tone parameter separately, solving out corresponding basic-tone parameters, comparing them separately with last frame figures and using compared result with minimum D-value as restoration value. |
Claim： |
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Priority： |
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PCT： |
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