other than the sallen-key filter, notch filter etc i found that the book that i have specified a lot of filter names but said them to be complex.... in which book can i find a complete reference to filters...
A.Anand Srinivasan,
"Filter Theory and Design: Active and Passive" by Abel S Sedra and Peter O Bracket is excellent. ISBN 0-916469-14-2. It's out of print, but readily available used.
Regards,
Kral
Rolf Schaumann & Mac E. Van Valkenburg "Design of Analog Filters"
by Rolf Schaumann, Mac E. Van Valkenburg
Oxford University Press; 2Rev Ed edition (January 15, 2001)