语音编码方案客观评价

Objective evaluation of speech coding schemes

选用语音信号特征参数LPCC、Mel谱、Bark谱以及时域点对点欧氏距离四组参数,通过比较原始信号与经过编码解码后的信号之间的欧氏距离,反映了两组信号的相似程度,对ITU-T Rec.G.722.1、G.722.2和Speex Codec三种语音编码方案作出了客观评价,同时对三种方案的编解码计算量进行了评估,为语音编码研究领域研究者提供参考和借鉴。

This paper maked objective evaluation of speech coding schemes ITU-T Rec. G. 722.1, G. 722.2 and Speex Codec by calculating Euclidean distance of LPCC, Mel spectrum, Bark spectrum and a time domain point-to-point parameter between the original signal and the decoded signal. Calculation on processors was also assessed. We hope our work can provide reference for related people on related fields.