My Beats Karen Tipping Dylan Barrett Mike Smith

Overview Goal: To dynamically create tracks for guitar hero using any song as input. Terminology for our project  Song  Track  Button  Segment

Technology Frets on Fire (FoF)‏ Analyze by The Echo Nest Java

Timeline: Sept. 17 – Oct. 1 Mike: Create functions to gather data from Analyze, which outputs an XML description file  Uses description to create list of song notes Dylan: Reverse engineer the MIDI file format used by Frets on Fire  Generate our own FoF tracks Karen: Convert MP3 to OGG  Embed conversion within Java tool

Using Analyze's XML File Parse XML to:  Locate song segments Each segment corresponds to a note  Find common song structures Create Musical Data Structure  Linked List Sequential nodes define note progression

Segment XML File 0 Success TRLFPPE11C3F10749F segmentslt;/method> Example

MIDI Format in Frets on Fire SuperEasy Easy Medium Hard

Timeline: Oct. 1 – Oct. 8 Dylan, Karen, Mike: Integration Generate preliminary simple test track  Each song note mapped to a single button Timing test

Timeline: Oct. 8 – Oct. 22 Two weeks Karen: Mapping notes to buttons  Different for each song Mike: Build a Suffix Tree  Way to identify common sequences

SuperEasy, Easy, Medium, and Hard Easy Difficulty  Common repetitive structures  Low frequency of notes Harder Difficulties  Includes more notes and less common structures  Building on what's already in the lower difficulties

Timeline: Oct. 22 – Nov. 12 All of us: Making better tracks you'd like to play Heuristics remove notes from song for track  Note frequency, and concurrency  Remove more for easier difficulties Curve Sampling

Mathematical Curve Sampling Determines which notes are needed to get across the same basic musical structure

Timeline: Nov. 12 – End of Semester Karen, Mike, Dylan: Final integration Play our dynamically created tracks on FoF Tweak heuristics Fix bugs

Questions?