Designing Intelligent Systems The Mood Agenda

A system that uses music to prepare you for certain activities.

The Mood Agenda Creates a more active mood when the user has an upcoming activity. Gives the user an indication of the time he or she has left, until the activity starts.

The Mood Agenda Music BPM Pitch Volume User Heartbeat Blood preassure Brain activities

The intelligent system Input: Heartbeat Output: BPM

The intelligent system Music affects different people on a different way. People listen to different musical styles and they have individual music libraries.

The intelligent system Example Moment of relaxationMoment of activity

The intelligent system Example Stable relaxationIncreasing active moodActivity 1 hour before the activity 2 hours before the activity

Part 1: stable relaxation Uses random start bmp (Bs) Uses a pre defined optimal heartbeat state (Ho) Play random songs from the library with similar bpm’s (max Δ 5bpm) If heartbeat input (Hi) moves towards Ho, the song will rank +1, else -1. If Hi (endsong) – Ho < Hi (beginsong) – Ho Rank + 1 Else Rank - 1 After all numbers have been ranked, the system will only play the songs with an +1 rank and rank them again.

Part 2: Increasing active mood Uses the optimal found bpm from part 1 as start bpm (in this example 40). Uses a pre defined optimal heartbeat (Ho) Uses a start bpm increase configuration. Works in an hour time

Part 2: Increasing active mood Song 1 Song 2 Song 3 A Song 1 Song 2 Song 3 B Song 1 Song 2 Song 3 C Song 1 Song 2 Song 3 D Ho 40 +i60 +i+j 80 +i+j+k 100 +i+j+k+l 120 +i+j+k+l+m Bpm Song are chosen randomly: Song 1 with a similar bpm of the start of the stage Song 2 with a similar bpm of the start bpm+ end bpm 2 Song 3 with a similar bpm of the end of the stage

Part 2: Increase active mood Example for stage A If Hi(end stage) – Hi(begin stage) = 15 i= 0 Save song combinations + try new random combination next time ElseDon’t save + try a new random song combination next time Song 1 Song 2 Song 3 A Song 1 Song 2 Song 3 B Song 1 Song 2 Song 3 C Song 1 Song 2 Song 3 D Ho 40 +i60 +i+j 80 +i+j+k 100 +i+j+k+l 120 +i+j+k+l+m Bpm

Part 2: Increase active mood Song 1 Song 2 Song 3 A Song 1 Song 2 Song 3 B Song 1 Song 2 Song 3 C Song 1 Song 2 Song 3 D Ho If Δhi < 0 i=i i60 +i+j 80 +i+j+k 100 +i+j+k+l 120 +i+j+k+l+m Bpm