I found a player at newgrounds.com time ago (cannot find it now, forgot the url, will comment if i find it) that has two pairs of speakers. The upper pair plays loud sounds or screamy sounds but the lower pair plays the deep sounds, like bass or simillar. I talk about mp3 sounds.
My question is how or what should i search in the sound raw data in order to separate deep from loud sounds?
Dont know what tags to add for this type of question, but suggestions would be good :)