Analysis of the relationship between quality of experience and service attributes for 3D future internet multimedia

Seeing is Believing and Vice Versa: Investigation of the Altered Perception during Subjective Assessment of Streaming Multimedia

“…At higher levels (4 and 5), the common preconception was that TC1 needs to be at least as good as TC2, and TC3 cannot be better than TC2. On lower levels (1 and 2), the opposing concepts appeared in several cases, similarly to our earlier finding regarding the connection to the access network [8] and network security [11].…”

“…An interesting finding here was the preconception of quite some participants, stating that transmission power acts similarly to sound volume; too high can be just as disadvantageous as insufficiently low. Even though test cases without IPsec network security were faintly better in the different aspects of quality, a high portion of participants on the lower levels of LoC clearly favored secure test cases in their evaluation scores [11]. A common conception was that the secure nature of network communication protects the data stream from everything, including the possible QoS degradation in wireless transfer.…”

What your phone makes you see: Investigation of the effect of end-user devices on the assessment of perceived multimedia quality

“…The way it affects assessment sturdily depends on the specific user [16], and it correlates with one's prior experience and knowledge regarding service technology [17]. Results in the topic [18] show that most of this distortion is originated to environmental information about the servicesince preconception is usually one of the conflicting cognitions -but some are simply hard to hide from measurement participants [3], thus bound to take effect if present.…”