ITU-T P.840 SPANISH-2003
评估电路倍增设备的主观听力测试方法.系列P:电话传输质量.电话设备.本地线路网络.评定质量的客观和主观方法.12号研究组

Subjective listening test method for evaluating circuit multiplication equipment SERIES P: TELEPHONE TRANSMISSION QUALITY TELEPHONE INSTALLATIONS LOCAL LINE NETWORKS Methods for objective and subjective assessment of quality Study Group 12


 

 

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标准号
ITU-T P.840 SPANISH-2003
发布日期
2003年
实施日期
废止日期
中国标准分类号
M15;M40;M42
发布单位
IX-ITU
引用标准
ITU-T G.703 ITU-T G.704 ITU-T G.711 ITU-T G.726 ITU-T G.728 ITU-T G.729 ITU-T G.732 ITU-T G.733 ITU-T G.761 ITU-T G.762 ITU-T G.763 ITU-T G.764 ITU-T G.765 ITU-T G.766 ITU-T G.767 ITU-T G.768 ITU-T G.769 ITU-T P.50 ITU-T P.59 ITU-T P.830 ITU-T P.800 ITU-T
适用范围
The purpose of this Recommendation is to describea subjective listening test method which can be used to evaluate the speech quality of Circuit Multiplication Equipment (CME). This Recommendation is intended for use with CME systems, such as those described in Recommendations G.763, G764/G.765, G.767, G768 ordescribed in G.769 which use digital speech interpolation (DSI) techniques. For subjective test evaluations of CME systems not using digital speech interpolation techniques, channel transcoder systems described in Recommendations G.761 [General characteristics of a 60-channel transcoder equipment] or G.762 [General characteristics of a 48-channel channel transcoder equipment], use Recommendation P.830.

ITU-T P.840 SPANISH-2003 中可能用到的仪器设备





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