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ADAU1761 calculating coefficients on a PC

Question asked by cforster1965 on May 21, 2018
Latest reply on May 22, 2018 by cforster1965

Hello,

 

I'm using an STM32F103 acting as mass storage flash and a FatFS file system on board which allows me to take a hex file so I can upload this to a ADAU1761. Looking at the output from the SigmaStudio I see that when I use Graphic EQ eight order shelving I get what seems to be 20 parameters per band. The filter is described as a Holters/Zolser's. I want to calculate the values using the PC so I have a few questions.

 

Quetions:-

1) What is the structure of the filters as it seems to be using four sets of coefficients 

2) What calculations apply (how to calculate on PC)

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