This Recommendation 1 defines a single algorithm for assessing the speech quality of current and near future telephony systems that utilize a broad variety of coding, transport and speech enhancement technologies.Based on the benchmark results presented within the studies of ITU-T, an overview of the test factors, coding technologies and applications to which this Recommendation applies is given in Tables 1 to 4. Table 1 presents factors and applications included in the requirement specification and which were used in the selection phase of the ITU-T P.863 algorithm. It should be noted that the performance of the ITU-T P.863 algorithm under each individual condition in Table 1 is not reflected in this table. Additional and detailed analysis will be undertaken in the characterization phase of the ITU-T P.863 algorithm. Table 2 presents a list of conditions for which this Recommendation is not intended to be used. Table 3 presents test variables for which further investigation is needed, or for which ITU-T P.863 is subject to claims of providing inaccurate predictions when used in conjunction with these. Finally, Table 4 lists factors, technologies and applications for which the ITU-T P.863 algorithm has not currently been validated. Note that the ITU-T P.863 algorithm cannot be used to replace subjective testing.
ITU-T P.863-2011由国际电信联盟 IX-ITU 发布于 2011-01-01。
ITU-T P.863-2011 在中国标准分类中归属于: M16 信息传输指标。
非常抱歉,我们暂时无法提供预览,您可以试试: 免费下载 ITU-T P.863-2011 前三页,或者稍后再访问。
点击下载后,生成下载文件时间比较长,请耐心等待......
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号