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美利体育登录入口官网:ETSI EG 202 396-3-2015
语音和多媒体传输质量（STQ）；存在背景噪音时的语音质量表现；第3部分：背景噪声传输 客观测试方法（V1.5.1）

Speech and multimedia Transmission Quality (STQ); Speech Quality performance in the presence of background noise; Part 3: Background noise transmission - Objective test methods (V1.5.1)

被代替

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标准号

ETSI EG 202 396-3-2015

发布

2015年

总页数

82页

发布单位

欧洲电信标准协会

替代标准

ETSI EG 202 396-3-2017

当前最新

ETSI EG 202 396-3-2018

 

 

引用标准

ETSI EG 202 396-2 ETSI ES 202 396-1 ETSI TS 103 106 ITU-T G.160 ITU-T G.722 ITU-T G.722.2 ITU-T P.501 ITU-T P.56 ITU-T P.57 ITU-T P.800 ITU-T P.830 ITU-T P.831 ITU-T P.835 ITU-T P.862 ITU-T P.862.1 ITU-T P.862.2

适用范围

The present document aims to identify and define testing methodologies which can be used to objectively evaluate the performance of narrowband and wideband terminals and systems for speech communication in the presence of background noise. Background noise is a problem in mostly all situations and conditions and need to be taken into account in both, terminals and networks. The present document provides information about the testing methods applicable to objectively evaluate the speech quality in the presence of background noise. The present document includes: ? The description of the experts post evaluation process chosen to select the subjective test data being within the scope of the objective methods. ? The results of the performance evaluation of the currently existing methods described in Recommendations ITU-T P.862 [i.16] and P.862.1 [i.17] and in TOSQA2001 [i.19] which is chosen for the evaluation of terminals in the framework of ETSI VoIP speech quality test events [i.8], [i.9], [i.10] and [i.11]. ? The method which is applicable to objectively determine the different parameters influencing the speech quality in the presence of background noise taking into account: - the speech quality; - the background noise transmission quality; - the overall quality. ? The present document is to be used in conjunction with: - ETSI ES 202 396-1 [i.1] which describes a recording and reproduction setup for realistic simulation of background noise scenarios in lab-type environments for the performance evaluation of terminals and communication systems. - ETSI EG 202 396-2 [i.2] which describes the simulation of network impairments and how to simulate realistic transmission network scenarios and which contains the methodology and results of the subjective scoring for the data forming the basis of the present document. - French speech sentences as defined in Recommendation ITU-T P.501 [i.13] for wideband and English speech sentences as defined in Recommendation ITU-T P.501 [i.13] for narrowband.

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