How to export coefficients of IIR filter from Filter Designer Tool?

Hi,

I need to get a two matrixes (numerator and denumerator) of IIR filter that I designed in FilterDesigner, so I could use them with filter() function or to export them to C header for later using with some other things. But unfortunately, the export option gives two different matrixes (SOS and G). How to solve it? Some day I saw someone do this, but he changed a lot of things in interface etc., if I remember correctly.

Answer 1

[Jonas]

go to Edit -> Convert to single section

and then you can export them as numerator and denumerator