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ETSI TS 103 106
M00002941
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ETSI TS 103 106 Speech and multimedia Transmission Quality (STQ); Speech quality performance in the presence of background noise: Background noise transmission for mobile terminals-objective test methods
standard by European Telecommunications Standards Institute, 11/01/2016
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Full Description
The present document describes testing methodologies which can be used to objectively evaluate the performance ofnarrowband and wideband mobile terminals for speech communication in the presence of background noise.Background noise is a problem in mostly all situations and conditions and needs to be taken into account in both,terminals and networks. The present document provides information about the testing methods applicable to objectivelyevaluate the speech quality of mobile terminals with AMR and AMR-WB codecs in the presence of background noise.
The present document includes:The method which is applicable to objectively determine the different parameters influencing the speechquality in the presence of background noise taking into account:the speech quality;the background noise transmission quality;the overall quality.The description of the adaptation of the test method described in ETSI ES 202 396-1 [i.2].The model results in comparison with the underlying subjective tests used for the retraining of the objectivemodel.The model validation results:Additional validation results are provided for cases which include some conditions outside the scope ofETSI ES 202 396-1 [i.2]. These include music as background noise, and user holding a handset in otherthan nominal position, as defined in Recommendation ITU-T P.64 [i.24]. In addition, validation resultsare provided for Chinese language.The present document is to be used in conjunction with:ETSI ES 202 396-1 [i.2] which describes a recording and reproduction setup for realistic simulation ofbackground noise scenarios in lab-type environments for the performance evaluation of terminals andcommunication systems.ETSI EG 202 396-2 [i.3] which describes the simulation of network impairments and how to simulate realistictransmission network scenarios and which contains the methodology and results of the subjective scoring forthe data forming the basis of the present document.ETSI EG 202 396-3 [i.4] which describes the basic objective model underlying to the Model described in thepresent document.American English speech sentences as enclosed in the present document.