【摘要】 对数字水声语音质量估测方法 E-Model进行研究。阐述E-Model语音质量客观评价方法的基本原理,以及模型的客观评价结果与主观评价MOS分值之间的关系;然后研究时频差分OFDM技术在数字水声通信系统中应用;最后采用基于OFDM技术构建数字水声语音通信系统模型,利用E-Model对模型输出的通信语音质量进行评价,并通过仿真实现给出客观评价值和主观MOS值之间的关系曲线。更多还原

【Abstract】 In this paper,the E-Model methods are studied to estimate digital underwater acoustic voice quality. Firstly,the basic principle of speech quality objective evaluation method E-Model and the relationship between the objective evaluation result and the MOS values are studied. Secondly,we studied the OFDM technology applied in the digital underwater acoustic communication system. Finally,we used the OFDM technology to build the digital underwater acoustic voice communication system Model,and use the E-Model to evaluate the quality of voice,then used the simulation experiment to get the relationship curve between the objective values and subjective MOS values.更多还原