I'm currently working on an idea for a game i have that involves beat detction. Th engine im working with is Unity, and I've never had any experience with audio, coding wise, so be gentle :)
I've looked at several articles and tested out several algorithms including some of my own, but none we're really successful nor accurate enough, and i feel like I've been getting something wrong this entire time.
Specifically I've tried implementing the idea's presented here: http://archive.gamedev.net/archive/reference/programming/features/beatdetection/index.html
but with little success, i still think im skipping over something and i cant quite pinpoint it.
If someone could provide an explanation about how to make an actually accurate beat detector i would be very grateful.
EDIT: some people were confused as to what im having trouble with. Here is my latest try at detecting beats, i still dont understand why it's so inaccurate: http://pastebin.com/BD8y9tfz
in this i used (R1) equation in the link i posted above to compute the instant energy from the 1024 samples i took, and then i used (R3) to calculate the local average sound energy from the buffer containing all the previous instant energy calculations, then i checked if there is a significant rise in instant energy compared to the average local sound energy, if there is, it means there is a beat, if there isn't, the program continues as usual.
(stupid reputation system doesnt let me post links and pictures ): ).
Edit 2: added implementation for R4,R5 and R6, still not working though. added a bit of debug, and for some reason the constant is ridicolosely small, numbers like:
Constant: -103416
and Constant: -54793.28, ive got no clue why im getting these numbers, any help?