The purpose of this program is to A.) Provide some basic background for those who are investigating the principles of electronics, and filters in particular for the first time, or to provide a review for those who studied it sometime ago Potential problems are covered, to make it easier to get what you want B.) To aid those who need a good bandpass filter design for some audio application, and would like the computer to generate a schematic, and compute values C.) To help those who need a filter, to choose components that will perform as desired, or atleast to help make a sensible compromise This includes guidelines and suggestions as totheoperational amplifierchoices available