The Audio Measuring&Testing Techniques Of Mobile Phone

With the rapid development of communications technology and services, themobile phone has become an indispensable communication tools in people’s dailywork and life. However, as an important parameter of the quality evaluation of mobilephone audio performance has attracted more and more attention to consumers. Audioquality directly affect the user experience and selection, good audio performanceneeds a set of scientific and strict testing methods to ensure. Therefore, this articlechooses to mobile phone audio test techniques research.The main contents of this paper are as follows:（1） On the basis of referring to domestic and foreign literature, first of all, onthe current domestic and foreign this article introduced the development of mobilephone audio standard, audio evaluation parameters and the theoretical basis for theevaluation parameter measurement.（2） The core content of this article built a suite of mobile audio testequipment. A reference to the ITU standards and the related domestic standards, aftera series of repeated experiments, achieved mobile phone audio performanceevaluation parameters measurements, such as Loudness Rating, Sensitivity/Frequency Characteristics, Side Tone Mask Rating, Distortion.（3） Based on the structures of the device’s accuracy, it is a set of scientificand precision audio test systems. This paper’s innovation discussed the calibration ofmobile phone audio test system, proposed source of core components, Artificial ear,Mouth simulation the calibration program, and analyzed uncertainty of measurementfor the core components of device.（4） We test for mobile phone audio mobile phone audio performanceparameter and acquired experimental measured data, using this data compared withBeijing Taier laboratory testing data, in order to verify the feasibility of the testplatform.The experimental results show that: the paper built mobile audio test system canachieve audio performance testing of mobile phones, and the proposed systemcalibration program is a scientific and reasonable.