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1、MMC 习题讲解,Chapter 7,Chapter 7,Chapter 7,Chapter 7,Chapter 7,Chapter 8,Chapter 9,Chapter 9,Reduction,Reduction,Expansion,Expansion,Only X4,D2,D1 need to encoder and transmit to the decoder side.,Chapter 9,Chapter 9,Chapter 10,Chapter 10,Chapter 10,Chapter 11,Chapter 11,Chapter 11,Chapter 11,Chapter 12
2、,Chapter 12,Chapter 13&14,Chapter 13&14,Chapter 13&14,Draw a diagram of Channel Vocoder and explain the principle of it.,Chapter 13&14,Explain the masking effect illustrated in Fig.14.7,Chapter 15&16,Describe how does TCP and UDP work,respectively.What are the main differences in the type of service
3、s that they can deliver?What is the difference in the transport delay involved?,Chapter 15&16,What is the primary function of the RTP protocol?What is the assumed underlying transport protocol(TCP or UDP)?What does it enable the receiver to accomplish beyond the simple UDP protocol?How does RTP/UDP
4、combination differ from TCP?Transmitting real-time data such as audio and video streamsUDPAdditional ParametersPayload Type,Timestamp,Sequence Number,Synchronization Source(SSRC)ID,Contributing Source(CSRC)IDRTP/UDP combination is better than RTP/TCPTCP is connection-oriented,more difficult to scale
5、 up in a multicast environmentTCP needs to retransmit missing packets,to achieve it reliability,which is less important in multimedia data transmissions.,Chapter 15&16,What is the primary function of the RTCP protocol?What is the primary function of the RTSP protocol?RTCP:Real Time Control ProtocolC
6、ombined with RTPMonitoring QoSHelping synchronization of audio and videoRTSP:Real Time Streaming ProtocolFor communication between clients and media severs Requesting presentation description Session setup Requesting and receiving mediaSession closureDate transmitting using RTP,Chapter 15&16,What is
7、 network jitter?How can a streaming player smooth the jitter?Jitter:A measure of smoothness of the audio/video playback,related to the variance of frame/packet delaysSmooth the jitterLarge bufferHolding enough frames to allow the frame with the longest delay to arriveIncreasing the latency,not good in real-time applicationRate control in source coding,Chapter 15&16,What is meaning of QoS?Collective eect of service performances that determine the degree of satisfaction of the user of that service.It has everything to do with how the user perceives itWhat are the major parameters of QoS?,
