hello everyone....this sem we had a course on analog filter design....i understood the concept of higher order filters design using op amps(that means hoe to increase the order by adding more and more capacitors and resistors)....but in theory this subject went over my head....all that poles and zeroes thing....please suggest any book for it friends.....i have 20 days time(holidays)and i wanna improve in this topic...(AAC hasnt included this in Ebook)