Perceptual Quality of Audiovisual Content with Common Video and Audio Degradation Applied Sciences.
Audiovisual quality assessment remains a complex area of research.
Efforts are underway to understand how humans integrate and process the visual and auditory domains. In this work we analyze and compare the results of three psychological experiments that collect quality and content scores given by a group of subjects. The experiments include audiovisual material from a variety of content, such as sports, TV commercials, talk shows, music, documentaries, and cartoons, which are subject to a variety of visual effects (bitrate compression, packet loss, and frame freezing). ) and auditory (background noise). , echoes, clips, cuts) distortion. Each experiment explores a specific area. In Experiment 1, the video component was degraded due to visual artifacts, while the audio component was not degraded at all. In Experiment 2, the audio component is degraded, while the video component remains unchanged. Finally, in experiment 3, both the audio and video components are degraded. As expected, the results confirmed the predominance of the visual component in the overall audiovisual quality. However, a detailed analysis shows that for some types of audio distortion, the audio components play a more important role in building the overall perceptual quality.
