LMMS/lmms — pull request #1400 by diizy (2014-12-04 18:45:50+00:00)
Title: Transposed form of Linkwitz-Riley

I just noticed that since the Linkwitz-Riley works the same way as the basic BiQuad (just has 2x more poles and different coeffs), it can be transposed the same way, (theoretically) making it both faster and better-performing.