【作者】 王晶； 刘鑫； 王泽东； 谢湘；

【Author】 WANG Jing;LIU Xin;WANG Ze-dong;XIE Xiang;School of Information and Electronics, Beijing Institute of Technology;

【机构】 北京理工大学信息与电子学院；

【摘要】 语音质量测试方法对Vo IP技术优化和产品推广具有重要作用,首先通过主观测试与客观测试的对比分析简述了利用PESQ进行Vo IP客观测试的局限性;其次从技术角度提出了分方式、分场景的主观测试方案,在采集式测试或实时通话式测试的方式下,通过设置编解码质量、噪声抑制及回声消除三类测试情形下的七种测试场景,达到对Vo IP话音质量的多角度评价;最后给出了对测试数据的基本分析方法和假设检验对比分析方法。更多还原

【Abstract】 Voice quality test method is of great importance in the optimization and extension of the VOIP technology. The paper first elaborates the limitations of Vo IP objective tests, which is executed with the use of PESQ, through the comparative analysis between the subjective and objective test. Secondly, the subjective test scheme through multiple test scenes and multiple test approaches is proposed from the view of techniques. It is aimed to achieve a multi-angle assessment of VOIP voice quality through seven test scenes at the configuration of codec quality, noise suppression and echo cancellation, in the manner of collecting test and real-time test. In the end, the paper provides the fundamental analytical method and comparative analysis scheme of hypothesis test for the test data.更多还原