摘要
针对高效低速率语音编码,以LBG矢量量化码书设计算法为基础,研究了M-L搜索多级矢量量化(VQ)的码书设计算法和M-L搜索多级矢量量化编解码算法,同时对整个算法进行了全面的测试和性能分析。设计结果表明:该方法可有效提高LSF参数压缩的效率,改善谱失真指标。
The M - L VQ code book design algorithm and coding algorithm focus on high efficiency and low bit rate speech coding are studied, which is based on the LBG - VQ code book design algorithm. The comprehensive testing and perform- ance analysis perform are also performed for this M - L VQ algorithm in this paper. Design result shows this algorithm can improve the compression efficiency of LSF parameters and improve spectral distortion indicator.
出处
《电声技术》
2014年第6期53-56,71,共5页
Audio Engineering
关键词
语音编码
线性预测
矢量量化
码书设计
speech coding
linear prediction
vector quantization
code book design
