1. LAN Digital Audio
Greg Van Dyne
December 4, 2007

2. Agenda Introduction Technical Overview Protocols Demonstration
Future Trends
References

3. Introduction Local Area Networks (LANs) Small geographic area
Shared resources
Wired – IEEE 802.3
Wireless (Wi-Fi) – IEEE

4. Introduction Cont. MP3 Marketing exploding
Expected to reach 286 million by 2010 (Cadden, 2006).
Technology advances – more features gain edge

5. Scenario
Large collection of digital music and want to share it with roommates and be able to share with each other.
Want to play music with stereo system in living room
Running wire is undesired.

6. Network Attached Storage (NAS)
Data easily shared over LAN.

7. AirTunes Apple’s Airport Express Create/join wireless network
Integrated into iTunes.
Digital audio streamed to remote speakers.
Compresses audio stream on the fly using Apple’s Lossless Compression and encrypts data streams

8. DLNA Digital Living Network Alliance
International, cross-industry collaboration.
Seamless interoperability between network of PCs and consumer electronics.

9. Layout
Airport Express Setup Guide

10. Protocols DHCP – Dynamic Host Configuration Protocol
Assign IP addresses to devices
TCP/IP – Transmission Control Protocol/Internet Protocol
UDP – User Datagram Protocol

11. Demonstration

12. Future Trends Higher data rates (802.11 N) Wi-Fi enabled MP3 players
Other vendors join market

13. References
Cadden, C. (2006) “MP3 Player Market to Reach 286 Million Units by 2010.” In-Stat.com. Retrieved Nov. 23, N ID.
Snell, J. (2004) “How AirTunes Works” Macworld.com. Retrieved Nov. 23, ves/ php.
Wikipedia. (2007) “Digital Living Network Alliance.” _Alliance