Besselworth filter

[reneayoroa]

Hi, I am trying to find more information about the besselworth filter, in the internet I only found butterworth and bessel, but not besselworth. Where can I find more information about it?
Greetings from Paraguay

[JohnS]

Typo for Bessel & Butterworth?

John

[reneayoroa]

hi John, thanks for the answer. So does that means it is a combination of both types of filters?

Rene

[JohnS]

Typo = a typographical error

Isn't a web search great!

John

[reneayoroa]

I might have forgotten to explain "besselworth" is the filter used in the olimex emg-eeg-ekg shield schematics.

http://imgur.com/a/n1FQU

So the question is, is it a bessel filter?a butterworth filter? or something else?

[JohnS]

You did!

But a web search got me lots of matches so should for you too...
E.g. http://openeeg.sourceforge.net/doc/modeeg/modeeg_design.html

John