Computational Reduction For G.729’s LSP Quantization

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题名:	Computational Reduction For G.729’s LSP Quantization
作者:	Cheng-Yu Yeh Chang-Zhi Zhuo
贡献者:	Department of Electrical Engineering,National Chin-Yi University ofTechnology, Taichung, Taiwan
关键词:	CS-ACELP LSP vector quantization tree VQ
日期:	2010-06
上传时间:	2010-09-15 09:50:31 (UTC+8)
摘要:	G.729 standard has been widely used in the VoIP system. But the computational complexity is too large to real-time work via software implementation on embedded devices. Even though the G.729A, it is still hard to implement. This paper will focus on the computational reduction of the quantization procedure of LSP coefficients. Thus, the hybrid two-stage VQ is proposed to replace the original structure. Experimental results confirm that more than 80% of computations can be eliminated in comparison with the conventional G.729 as well as the performance of speech quality is still good. The proposed approach can be successfully used in LSP quantization procedure and the efficiency is excellent.
關聯:	第五屆智慧生活科技研討會論文集(上)
显示于类别:	[資訊工程系(所)] 第五屆智慧生活科技研討會

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