ADAU1452, how to design Butterworth/Linkwitz-Riley/Bessel LP or HP Bypass/6dB/Oct, 12dB/Oct, 18dB/Oct, 24dB/Oct, etc.

Hello fish,

There are a few good posts that talk about these filters.

https://ez.analog.com/dsp/sigmadsp/f/q-a/117778/how-to-use-basic-second-order-filter-to-implement-the-linkwitz-riley-filter?ReplySortBy=CreatedDate&ReplySortOrder=Ascending

https://ez.analog.com/dsp/sigmadsp/f/q-a/64769/how-to-design-shelf-and-butterworth-hp-or-lp-6db-oct-12db-oct-filter/168052#168052

Also, the butterworth and Bessel filters are included in the General 2nd order filters in the library:

Then you could use the crossover blocks as you did in your other post.

Dave T