针对信道差异引起语音发生畸变的问题, 基于概率统计和图像比对的方法, 对目前常用几种录音工具在实验室环境下录制的音频进行了听觉分析和声学分析。通过提取不同信道下不同话者的特征图谱和数据, 分析信道差异对语音的本质差异与非本质差异的影响。结果表明, 信道差异会导致所录语音信号之间存在一定的非本质差异。即使信道同种, 当录音器材之间存在差异时, 同样也会导致差异的产生。

Aiming at the problem of speech distortion caused by channel difference, based on the methods of probability statistics and image comparison, the auditory and acoustic analysis of the audio recorded by several recording tools in the laboratory environment are carried out. By extracting the characteristic maps and data of different speakers in different channels, the influence of channel differences on the essential and non-essential differences of speech is discussed. The results show that the channel difference will lead to some non-essential differences between the recorded speech signals. Even if the same kind of channel, when there are differences between recording equipments, the same will lead to differences.