| 基于Chebyshev法实现LPC与LSF相互转换 |
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| 引用本文： | 袁晓勇,唐建红,曲志昱. 基于Chebyshev法实现LPC与LSF相互转换[J]. 信息技术, 2009, 0(5) |
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| 作者姓名： | 袁晓勇 唐建红 曲志昱 |
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| 作者单位： | 哈尔滨工程大学信息与通信工程学院,哈尔滨,150001 |
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| 摘 要： | 在语音信号的处理中,常需要将线性预测系数(LPC)与线谱对频率参数(LSF)相互转换.利用余弦函数特性改进的Chebyshev多项式求根算法,将余弦函数转换为高次幂函数再进行搜索求根来实现语音特征的LPC参数与LSF参数的转化.
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| 关 键 词： | 语音信号处理 Chebyshev多项式求根法 线性预测系数(LPC) 线谱频率(LSF) |
Transformation between LPC and LSF based on Chebyshev algorithm |
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| YUAN Xiao-yong,TANG Jian-hong,QU Zhi-yu. Transformation between LPC and LSF based on Chebyshev algorithm[J]. Information Technology, 2009, 0(5) |
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| Authors: | YUAN Xiao-yong TANG Jian-hong QU Zhi-yu |
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| Affiliation: | School of Information and Communication Engineering;Harbin Engineering University;Harbin 150001;China |
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| Abstract: | In speech processing,transformation between LPC and LSF is usually needed,Chebyshev polynomial root algorithm is adopted in the paper.According to characteristic of cosine function,the algorithm transforms cosine function into high power function and searches the roots.Transformation of LSF parameter and LPC parameter has been realized. |
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| Keywords: | speech signal processing method of Chebyshev polynomial root finding linear prediction coefficients linear spectral frequency |
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