C math libraries for filter coefficients calculations on MCU

https://github.com/hodefoting/lyd/blob/master/lyd/core/biquad.c

Hello Insane,

I suggest you search this forum for some answers. There are a lot of posts on this topic. Try different search terms and you should find what you need. I did a quick search and found this one:

https://ez.analog.com/dsp/sigmadsp/f/q-a/64395/filter-calculation-adau1466-192khz

Keep in mind that the ADAU1452,50,51, and ADAU1462,63,66,67 all have the same core and will function the same for filters. The ADAU1442, aDAU1761 and ADAU1701 are similar but there are a few differences in word size in the DSP which slightly changes the calculations for floating to fixed point but the concepts are all the same.

Dave T

Thanks! i find several topics too. https://ez.analog.com/dsp/sigmadsp/w/documents/5205/calculating-filter-coefficients-to-store-in-a-microcontroller