EVO: The Game



Evo is a first-person shooter game in which the player has the ability to choose 
(supply) the background music, and the music that is chosen will dictate the visual
complexity of the environment as well as cue dynamically generated events, creating 
an interesting and new experience every time the game is played. It is an evolutionary 
approach to gaming where the player is given an unrivaled place as the 3D world editor 
without needing to know anything more than simply what kind of music he or she likes. 




EVO: Beat Detection

With mp3 input, when the mp3 is played back, it is converted into generic samples 
(left right alternating signed integers) that is eventually sent to the sound card.  
Our beat detection engine will essentially be a DSP hook that is installed in the 
sound pipeline between sample conversion and playback. Given any number of samples 
(normally 32 samples in the buffer), we can perform a Fast-Fourier Transform to give 
us a snapshot of the frequency spectrum for that slice of time (We're aiming for an 
FFT size of 512 and will most likely be focusing on the lower end of the spectrum anyway). 
At this point, we have a pretty high level picture of the signal and we can begin extracting 
and collecting information.