Software requirements for inclusive employment: accessibility, usability and user experience contributions

Abstract

Present-day telecommunication devices are rarely utilized by comfortably seated users who do not perform any other parallel task. The typical communication sce-nario includes walking, driving a car, watching TV, working on a PC, etc., during a conversation. However, transmission quality evaluation has traditionally taken place in ideal laboratory conditions. The authors of this paper have prepared a new standard for subjective transmission quality testing with a parallel task that has been approved as ETSI TR 103 503. The paper summarizes the most widely-used transmission quality testing methods, discusses their disadvantages, and in-troduces a new testing methodology with a parallel task. It also presents two ex-periments performed in parallel task scenarios and highlights some differences in human perception in these scenarios.