Dear Duka,You really, really need to do some searching yourself. The formulas you need can be found in any electronics textbook - or in five seconds by using Google..Best,Jakob E.
Radio Designers Handbook? Someone recently posted a link to complete scans of that - if you don't have it, it's worth a download. I'm pretty sure it describes stuff like that in more detail than newer works...Jakob E.
Started by TobWen The Lab
Started by Gurusound The Lab
Started by EmRR The Lab
Started by weiss Filters/Equalizers