Most Transparent Multiband Splitter – Effects Forum

Aesaire wrote: ↑

Sat Sep 25, 2021 5:36 am

rafa1981 wrote: ↑

Fri Sep 24, 2021 6:04 pm

It is only possible with FIR/FFT crossovers, but you should expect them to have latency.

So it is either phase shift (not a problem if you aren’t mixing with the dry signal) or latency.

Could you recommend any FIR / FFT multiband splitters? Also, don’t FFT crossovers have trouble accurately rendering transients on top of the latency?

I don’t know of any, just multiband plugins that use it internally. It doesn’t mean that they don’t exist.

By FIR/FFT I wanted to mean a FIR filter doing the convolution by using a FFT. As the number of FIR filter coefficients grow after some point it’s more efficient to use a FFT instead of naive convolution. But that doesn’t mean that the filtering itself is done on the frequency domain, the results are the same, it’s just an implementation detail/optimization. This is how e.g. r8brain does it.

I don’t know if the phase shifts of a Linkwitz Riley crossover can be heard on an A/B test on most cases/material. If mixing the original signal is desired, you can apply the same crossover in parallel to the Dry signal and sum it back, this way both the dry and wet signal will have the phase shift (there are more efficient ways to do it inside a plugin).

I’m almost ready to release a version of MixMaxtrix that can be used as a Linkitz Riley crossover with selectable band slope, but there is a bug on the Windows version (Win/Linux only) that I have to catch and very little free time to do it.

I have been toying with the idea of adding a crossover based on forwards-backwards filtering (as ljkb QRange does), but I don’t think I’d use it a lot.