State of the Art

In this Chapter, we provide an overview of the most popular objective speech and video quality measures. We give a brief description and the main features of each one; but we provide a comparative analysis for them in Chapters 5 and 6. We also highlight the basic multimedia transport protocols. The challenges and some solutions, including error concealment techniques for audio and video streams, of transferring real-time multimedia over packet networks are presented. Then, we introduce both speech and video compression algorithms. We also describe some of the standard speech and video codecs. In This thesis, we use two types of neural networks (NN); namely, Artificial NN (ANN) and Random NN (RNN). We give in this Chapter a general description of both of them.