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VoIP voice quality objective evaluating method based on network parameter

A technology of network parameters and voice quality, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of inability to evaluate VoIP voice quality, expensive measurement tools, etc., and achieve relatively accurate and real-time objective evaluation, The effect of improving accuracy and simplifying the testing process

Inactive Publication Date: 2017-06-06
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0006] In order to solve the problem that the existing objective voice quality evaluation method cannot make an accurate and real-time evaluation of the VoIP voice quality, and the existing measurement tools are expensive and need to input the original voice as a reference, the present invention discloses a Objective Evaluation Method of VoIP Voice Quality Based on Network Parameters

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  • VoIP voice quality objective evaluating method based on network parameter
  • VoIP voice quality objective evaluating method based on network parameter
  • VoIP voice quality objective evaluating method based on network parameter

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Embodiment 1

[0032]The present embodiment has described the operation process based on the method of the present invention, as figure 1 shown.

[0033] From figure 1 As can be seen, the operation process of the present invention and the embodiment is as follows:

[0034] Step 1: Connect to VoIP software to make a call and collect network parameters, corresponding to figure 1 1 in

[0035] Depend on figure 1 It can also be seen that the network parameters collected by the present invention and this embodiment are mainly packet loss rate, jitter value and delay value;

[0036] The collection of network parameters in this embodiment adopts the VoIP call software designed based on webRTC. This VoIP call software can collect network parameters and voice signals in real time.

[0037] In this embodiment, network parameters are recorded every second during a call. In order to test the accuracy of VoIP voice evaluation in different network environments, in the process of network parameter c...

Embodiment 2

[0067] This example describes the objective evaluation results based on the method of the present invention.

[0068] From image 3 It can be seen in the scatter plot between the objective prediction results of the present invention and the embodiments and the actual POLQA evaluation results.

[0069] In the present invention and embodiment, adopt VoIP measured data to evaluate prediction result: adopt this algorithm to predict objective score value for each group of network parameters, and compare with the MOS value (POLQA evaluation result) of actual voice, image 3 It is the scatter diagram of the prediction result of this algorithm, the abscissa is the prediction result of the evaluation model, i.e. the prediction score of the model used in the present invention; the ordinate is the actual measured objective MOS score that POLQA obtains, and the middle slash is the contour line, representing the prediction value It is equal to the actual value, and the upper and lower lin...

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Abstract

The invention discloses a VoIP voice quality objective evaluating method based on network parameters, and belongs to the voice quality evaluation research field. The method includes the following steps: obtaining network parameters during VoIP conversation; pre-processing the acquired network parameters, pre-processing including obtaining basic main statistics such as mean value, variance, extreme value, mode and median, wherein the network parameters mainly refer to a packet loss ratio, a jitter value and a time-delay value; performing PCA dimensional reduction on the preprocessed data; and finally inputting the data undergoing dimensional reduction to a multivariable linear regression model, and obtaining a voice quality objective evaluation score through calculation. In this way, evaluation of the VoIP voice quality based on the network parameters is conducted. The invention brings forward the new VoIP voice quality objective evaluating method, which can accurately evaluate the voice quality only by monitoring network parameter values with no need of obtaining voice signals.

Description

technical field [0001] The invention relates to an objective evaluation method of VoIP voice quality based on network parameters, is an objective evaluation method of VoIP voice quality suitable for a real-time call scene, and belongs to the technical field of voice quality evaluation. Background technique [0002] With the rapid development of Internet technology, IP telephony has been widely used by virtue of its huge price advantage. But as we all know, the transmission criterion of IP network is "best effort", which means that he cannot have high reliability like those networks specially designed for real-time voice communication. The network characteristics (such as packet loss, jitter, and delay) of the IP network will greatly affect the voice quality during the call. Therefore, how to accurately evaluate the voice quality of VoIP is particularly important. VoIP is the pioneer of the next-generation packet-based converged service network, and the measurement of voice...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26
CPCH04L41/5009H04L43/08H04L43/0829H04L43/0852H04L43/087
Inventor 王晶费泽松刘鑫赵晓涵
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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