31 band Graphic EQ

Does anyone have any thoughts on the best way to create a 31 band Graphic EQ?

I am using the ADAU1452 and have currently done one with the Second Order, Double Precision, Parametric EQ but this only seems to allow a maximum of 15 filter bands so I have had to cascade 3 of them for each of the two stereo channels.

As a GEQ only needs the gain parameter, the frequency and Q of each band being fixed, I wonder if there is a simpler or more efficient ways of getting the 31 "bell" filters?

thanks for your attention

PhilipJ

Audio Signal Processors

adau1452

SigmaDSP Audio Processors