Telecommunication network speech quality evaluating method

Abstract

The method includes the public switched telephone network, the local MCS test sub-control terminal and the tandem office TMSC test sub-control terminal. The characteristics are that the GSM dialing tester is installed at each end of the network to be tested. Comparing with other methods for evaluating the speech quality of the telecom network, the invented method provides the features of strong autoamtic testing functions, accurate evaluating results and fast speed.

Description

technical field [0001] The invention relates to a method, in particular to a method for evaluating call quality of a telecommunication network. Background technique [0002] In telecommunication network optimization, it is a very important issue to evaluate the call quality of telecommunication network. How to evaluate the call quality of the telecommunication network has also become an important research topic in the field of telecommunication evaluation. Many methods have been proposed for this over the years. In view of the absence of a better evaluation method, a subjective evaluation method has been used now. The subjective evaluation method is the subjective evaluation grade (Subjective Opinion Scale), or the average evaluation score (Mean OpinionScore, abbreviated as MOS). The MOS score adopts a five-level scoring standard. The method is that dozens of listeners audition and score in the same channel environment, and then perform statistical processing on the scores...

AI Technical Summary

Problems solved by technology

They are all built on the basis of measuring the mean square error, which is characterized by a wide frequency range of speech, so it is difficult to directly analyze the speech signal-to-noise ratio and the accuracy is poor

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