The research of computation improvement on G.729's fixed codebook
| Autor: | Sheng-Chih Chang, 張勝致 |
|---|---|
| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 The computation improvement on G.729’s fixed codebook is researched and implemented. Moreover then 20% computation of G.729 is paid on the fixed codebook search. In this thesis, an preprocessing algorithm is employed to limit the search domain of fixed codebook’s space. In the experimental results, more than 98.54% of computation is reduced. The speech quality is still good in this approach. The MOS of original G.729 is 4.5 and the new approach is about 3.8. It is reasonable good and the performance of this approach is confirmed. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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