help !!!!!

is their any body alife in this place

where is the posts !!?

For active filter selection try:
http://www.discovercircuits.com/A/a-filter.htm
Here is an example of 200Hz low-pass filter selected from the "low-pass" filter section:
http://ourworld.compuserve.com/homep...m#2Ofilter.gif
For sequence "200Hz high-pass" - "2.5KHz low-pass" you can try band-pass configuration..
Regards,
IanP

And one more thing: using big red leters is like shouting .. I don't think it is a good idea in such a friendly environment like this forum !

allright i am sorry about the red shouting but no body posted me and i realy need these filter hay what about this colour :D:D:Dby the way thank you for the sites