[DSP] butterworth 4th order High-pass filter requests

[이석태]

Hi guys,

I've been diving into GOLANG less than 1 month.

Now I am looking for the DSP filter for butterworth 4th order High-pass filter for study.

I just found 

github.com/jfcg/butter

but 'butter' package has 1st order and 2nd order filter kernal.

Is there any 4th order for butterworth high-pass filter for GOLANG ?

Thanks in advance, filter kernal desing is too difficult for the newbee for GOLANG :-)

Cheers!

[Brian Candler]

http://www.catb.org/~esr/faqs/smart-questions.html#homework

[Shen Hugh]

hello， I am looking for 8th order low-pass filter,
I found github.com/jfcg/butter too,

Have you made any progress?

Thanks in advance