2. Intro Alexei Miagkov: researching GUI networking sound aspects of Java Walter Kammerer: researching networking concepts documenting real-time media concepts general project planning Researching, documenting, implementing GUI, networking, and sound aspects of Java

4. Java Easier GUI application development Provides a higher-level interface to networking than C++ Cross-platform compatibility

5. How SAIM works

6. Decisions Java vs. C++ XML vs. clear text Polling vs. interrupts Multicast UDP vs. TCP sockets

7. SAIM Demo

8. Streaming Media What is streaming audio? –Eliminates waiting - the sound plays as it is delivered –User control over the audio stream - pause, move back or forward, stop at any time –File doesn’t take up disk space locally

9. How Streaming Audio Works Types of streaming audio –On-demand –Live Encoding audio –Codec - compression/decompression scheme –Compressed audio is: Much smaller in size Lower quality Protocols used in streaming audio –TCP (Transmission Control Protocol) Error correction can make the stream pause and sound unnatural –UDP (User Datagram Protocol) Dropped packets have noticeable effect on sound but stream continues uninterrupted –RTSP (Real-Time Streaming Protocol) New standard allows for more efficient audio and video streaming

10. Streaming Audio Applications –Live broadcasts of events: news, internet radio, sporting events –Audio on demand : recorded radio shows, interviews –Entertainment: music, radio, audio books –Business applications: Internet (IP) phone and audio conferencing

11. Java Sound Java Media Framework has features not available in Java Sound: –Many more available CODECs –Support for stream synchronization –Supports streaming protocols such as RTSP Java Sound advantages: –Buffering control –Additional command over the control flow –Control over the audio hardware –Capable of processing MIDI files –Easier to extend

12. Java Sound Demo

13. Summary Researched and Implemented: –GUI building with Swing –Threads –Multicast and Unicast socket networking –Custom Java events –Java’s Remote Method Invocation –Basics of Java Sound –Real-time media over the Internet Functional instant messenger