Method for increasing base-sound period parameter quantified precision of 0.6kb/s voice coder |
Title： |
| Method for increasing base-sound period parameter quantified precision of 0.6kb/s voice coder |
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Application Number： |
200710065403 |
Application Date： |
2007/04/13 |
Announcement Date： |
2007/09/05 |
Pub. Date： |
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Publication Number： |
101030377 |
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 19/00H03M 7/30 |
Applicant(s)： |
Tisinghua Univ. |
Inventor(s)： |
Cui Huijuan, Tang Kun, Li Ye, Hong Kan |
Key Words： |
base-sound period, quantified precision, voice coder, parameter |
Abstract： |
A method for raising parameter quantization accuracy of vocoder fundamental tone cycle includes inputting signal sample point sub-frame at coding end, picking up parameter vectors of fundamental tone and voiced-voiceless sound, quantizing voiced-voiceless sound parameter vector to obtain its quantization index value, carrying out quantization on certain scope to obtain relevant quantization index value being coded and outputted, decoding to obtain united quantization index value, carrying out counter quantization, setting fundamental tone cycle of voiceless sound to be 50 and using set cycle to make voice synthesis. |
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