filter -butterworth I need information for digital filter

[vead]

filter -butterworth
tpe low pass, high pass, band pass, band stop
transform type - Z transform

specification for filter

passband cut off frequency
stopband- cut off frequency
passband ripple
stopband attenuation
sampling frequency

Q1) does cut off frequency edge frequency and corner frequency same or different ?

 

[willis...]

There are a variety of online tools and calculators that can help you perform the calculations for creating the correct filter. Here is one that seems relatively comprehensive.


Regards,
Willis

 

[sabouras]

if you like to make a digital filtering program you could use that little program
http://www.winfilter.20m.com/
It convert the filter equation into C code.

 

[vead]

how to identify by the given specification that its low pass, high pass,band pass or band stop filter