基于预测编码和矢量编码的语音信号编码算法Speech signal encoding algorithm based on predictive coding and vector coding
杨超,刘云飞,徐向旭,朱弘,刘传辉
摘要(Abstract)：
为了在保证译码恢复的语音质量良好的前提下,减小编码的压缩率,以减小语音信号的存储空间,文中提出一种将线性预测编码、SOM神经网络矢量编码以及Huffman编码相结合的语音信号编码算法,并利用Matlab软件编程进行了语音信号编解码实验。实验结果表明,该算法既保留了波形编码算法具有的译码语音质量较好和算法简单的优点,又具有较一般的波形编码算法更小的压缩率,该编码算法的码率达到12.8 kbit/s,小于采用ADPCM编码算法的波形编码标准G.721的码率32 kbit/s(波形编码的最小码率)。
关键词(KeyWords)： 编码算法;预测编码;矢量编码;语音质量;波形编码;码率
基金项目(Foundation): 国家自然科学基金:基于椭圆球面波函数的非正弦波调制与解调技术研究(61701518)~~
作者(Author): 杨超,刘云飞,徐向旭,朱弘,刘传辉
DOI: 10.16652/j.issn.1004-373x.2018.24.032
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