Best practices for multiband processing

[pflugshaupt]

Perfect Crossover Filters

Hello, With a little help from this forum and this post here: I’ve been attempting to build a perfect Multiband crossover network, however I keep seeing issues in the signal when it’s reconstructed. Although audibly it sounds okay, I see distortions in the signal, or perhaps the “perfect crossover” isn’t perfect in this manner? My method is the one described by @danielrudrich in this post: I’m using the makeLowPass, makeHighPass, and makeAllPass functions of the IIR filter classes to cons…