Techniques for Audio Loss Concealment
Techniques for Video Loss Concealment
Earlier chapters described how RTP running over UDP/IP provides an unreliable packet delivery service, and how this means an application may have to deal with an incomplete media stream. There are two things the application can do when packet loss occurs: try to correct the error, or try to conceal it. Error correction is discussed in Chapter 9. In this chapter we discuss techniques by which a receiver can conceal the effects of loss.
When an RTP packet containing audio data—whether music or speech—is lost, the receiver has to generate a replacement to preserve the timing of the media stream. This ...