I know there is a lot of information already on the web, I finally came upon the color organ project, and assembled 3 filters as per schematic.
The issue here is, I would like to build a 10 band per channel analyzer, and are currently stuck on the filter calculation because the availability for ceramic capacitors is limited (so is my knowledge of bandpass filters), I can get capacitors of the following ratings .001, .0022, .0047, .01, .022, .047, .1, .22 uf. and Resistors I have lots of different values. Does anyone have some sort of calculator to design bandpass filters where I can fiddle with my allowed ratings and make whatever combination of resistors/capacitors to get the desired frequency? and if is not too much to ask, a little enlightenment as to how to choose which frequencies to pick.