2. Mobile Agents Using Sound Daniel Hägglund danhag-7@student.luth.se

3. Agenda Background System concept Design Implementation Summary Questions

4. Background Mobile agents Audio analysis

5. Mobile Agents Mobile code Autonomous Reactive

6. Audio Analysis Sound matching Speech recognition

7. System Concept Track a moving sound source by listening to the sounds it emits and migrate through the network in order to always stay close to it.

8. System Concept

11. Record sounds Identify a particular sound Determine the closest listener Activate listeners on adjacent hosts

12. Design Activate Report sound Nearest Adjacent Sound

13. Implementation Java Grasshopper 2 IBM ViaVoice

14. Implementation

15. Graphical display Start button Selected Adjacent

16. Implementation Status bar Current Region Hosts Nearest host

17. Implementation Manual set-up Recognises predefined words Distributed identification of sounds Uses volume to choose nearest host Migrates through the network What It Does

18. Implementation Cannot handle dynamic networks Does not recognise anything but words Unable to send audio data over network Inaccurate estimation of nearest host What It Doesn’t

19. Implementation 20 classes and interfaces 2,000 lines of code

20. Summary Possible Somewhat limited functionality

21. Questions?