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A ringtone quality detecting method of CRBT

A quality detection method and ringtone technology, applied in monitoring/monitoring/test arrangement, speech analysis, instruments, etc., can solve problems such as complicated transmission process and unpredictable ringtone quality

Inactive Publication Date: 2008-07-09
CHINA MOBILE GROUP ZHEJIANG
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AI Technical Summary

Problems solved by technology

From the beginning as a value-added service to the current basic service of mobile operators like SMS, the CRBT system has been paid more and more attention to the quality of service it provides to users through network transmission. Judging whether the sound quality of the source ring tone uploaded to the CRBT platform is clear, but due to the complexity of the transmission process, the quality of the ring tone after transmission through the communication network is unpredictable

Method used

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  • A ringtone quality detecting method of CRBT
  • A ringtone quality detecting method of CRBT

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Experimental program
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Embodiment Construction

[0009] A preferred embodiment of the present invention will now be described in detail in conjunction with the accompanying drawings.

[0010] Referring to Figure 1, use the recording mobile phone to dial and record the custom-made CRBT source ringtone, and the subjective evaluator of the CRBT sound quality will listen to the CRBT ringtone, and at the same time, the ringtone can be recorded locally through the recording computer in Figure 1. During trial listening, the ring tone reaches the user terminal from the CRBT platform through the communication network, and the target ring tone file is recorded on the user terminal through the PC, and the MOS value of the user's subjective feeling at the time is recorded at the same time, which most truly reflects the experience of the ring tone to the user .

[0011] Referring to the method for testing the quality of CRBT ringtones shown in Figure 2, in step 10, the review of CRBT ringtones is mainly carried out through manual auditio...

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Abstract

The invention discloses a color-ring back tone (CRBT) quality detection method, belonging to CRBT quality detection technical field. The CRBT tone quality detection method comprises the steps that a CRBT to be tested is dialled through a subscriber terminal and recorded as an object ring tone file; the object ring tone file is compared with a source ring tone file on a CRBT platform by a PESQ (Perceptual Evaluation of Speech Quality) algorithm, a MOS (Man Option Score) value is output and a CRBT effect class is obtained. The CRBT quality detection method is objective and effective and reaches more than 95% of correlation between the judgement of ring tone class and the subjective judgement.

Description

technical field [0001] The invention belongs to the technical field of CRBT sound quality detection, and in particular relates to a CRBT ringtone quality detection method. Background technique [0002] At present, the objective evaluation methods of sound quality that can provide high subjective and objective correlations all take into account the auditory characteristics of the human ear and use auditory perception models to simulate the listening process. Therefore, the current mainstream is to use perceptual models to evaluate nonlinear and error-prone audio communication systems. At present, the main perceptual model used is the PESQ (Perceptual Evaluation of Speech Quality) algorithm proposed by the ITU. The PESQ algorithm was originally applied to the system for evaluating the speech quality, and achieved good results in evaluating the speech quality. There has been no system for evaluating the quality of CRBT music. From the beginning as a value-added service to the...

Claims

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Application Information

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IPC IPC(8): H04Q7/34H04Q7/22H04M3/22G10L11/04G10L25/90
Inventor 祝瑾华李立奇杨川刘宏倪萍林大庆林建洪马峰
Owner CHINA MOBILE GROUP ZHEJIANG
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