I tried Reaper's FIR, but it's not precise enough. I'll sometime give an audio example, but currently looking for the right FIR spectrum filter. Try that with IIR crossovers - result is a big 'meh'.Īlso very good for frequency limiting (think de-esser), or multi-band gating (perfect for cleaning up noisy vocals).
It's brilliant for killing bass below 80 Hz for a bass synth, and using a clean "sub" sine wave, where everything above 80 Hz gets killed - likewise below 20 Hz.
(Same with IIR? Sure, but not when you start messing around with each individual band - be it multi-band: soft-clipping, compression, and hell, what the graphical equalizer you get with that, sounds really clean, unlike if you try the same with IIR crossovers ).Ī FIR and IIR just can't be compared in this situation. When split, then merged, there will be little to no difference (yeah, FIR ringing/echoing :/).
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Rectangular windows take a band out, with close to perfection. I don't want crossovers, because in case of a crossover between 20-40 Hz and 40-80 Hz, there will be something from each band in one-other. Okay, then I'll say for example, I only want to hear what's going on between 20 and 40 Hz. Again, I probably just need to hear your audio examples to understand the applications… But for multi band, the steeper the crossovers the less useful they tend to be in my experience. I would think that a super narrow and deep notch, such as are available in my ColoringEQ, would be all that's necessary to remove something like a feedback squeal in a live recording (had to do that before). What past devices have you used for this application, and do you have any audio examples? What applications would this be for? I can't imagine a musical application for such a thing, but I'm always interested in learning something new! Interesting request, for "perfect isolation and band splitting". Gotta find a sweet spot between accurate isolation - and artifacts it creates, aka how clean it will be.ħ68 kHz, holy! If that can't accurately isolate and follow the waveform of low frequencies, then I don't know what can. I wonder if it will be able to do the rectangular window, cause that's what I need for perfect isolation and band splitting.