A superframe audio track parameter smoothing and extract vector quantification method |
Title： |
| A superframe audio track parameter smoothing and extract vector quantification method |
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Application Number： |
200410096618 |
Application Date： |
2004/12/03 |
Announcement Date： |
2005/06/29 |
Pub. Date： |
2006/11/08 |
Publication Number： |
1632863 |
Announcement Number： |
1284136 |
Grant Date： |
2006-11-8 |
Granted Pub. Date： |
2006-11-8 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G10L 19/00, H03M 7/30 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Cui Huijuan, Tang Kun, Zhao Yonggang |
Key Words： |
superframe audio track, parameter smoothing, extract vector, quantification method |
Abstract： |
This invention relates to superframe track parameter quantifying method, which comprises the following steps: to frame the input voice signal sample as time sequence; to extract each frame voice track A parameter from the current superframe and then to convert it into line spectrum parameter for flatness; to extract unvoiced and voiced syllables parameters from the current super frame for vector quantifying; to minus direct current from the important frame line spectrum and to minus prediction values from the important frame off-direct current spectrum parameters; to use the importable frame line spectrum to get non-importable quantified line spectrum parameters; to convert the quantified parameters into voice track A parameters. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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