1. Musicster: A Location-Aware Music Player
David Zhao
Kevin West

2. Project Review What does it do? What is it good for? Who will care?
Plays different music at different locations
Adjust the speed of the music so it ends when you reach your destination.
What is it good for?
Listen to music between classes
Automatically switch the type of music
Who will care?
Students walking between classes
People want a smart music player

3. Related Work Other location-aware applications
Location-Aware To-Do List
Location-Aware Reminder

4. Demonstration What will the demo be like? Original Scenario:
Show the two different aspects of the project
Selection of playlist based on location (building accuracy)
Alter the speed of music according to velocity of movement
Simulate user moving with Placelab log file
Original Scenario:
Aimed for room-accuracy.

5. Implementation - Components
Placelab
Gives us coordinates of current location
PocketPlayer
Music player core that decodes and provides basic UI
Plugin architecture to allow DSP/Control modifications

6. Implementation

7. Implementation What is done? What is not done? Placelab Analyzer
Playlist selection
Speed adjustment by pitch shift
What is not done?
Frequency independent speed adjustment
Database for locations
UI for creating location entries

8. Implementation What issues remain?
Accuracy of Placelab: velocity estimates jump a lot
Better integration of components

9. Pictures

10. Evaluation
Criteria:
How accurate is the velocity and location detection
Is there audible difference when the music is sped up?
Will people find this to be useful?

11. Future Work Make a nice UI for controlling the system
Using accelerometer or other sensors to detect velocity more accurately
Using other sensors to control music playback