What I know is that slopes near Nyquist will sound different from 48 Khz to 96 Khz for example, because the filter - in layman's terms - "needs to go to zero amplitude response" at Nyquist, and it has less samples to do so when there's only 48 Khz instead of the 96 Khz. Do I need math, or can I go around math? The exp/log stuff is hard for me, everything in math is. The biquad slopes should sound kind of the same with 48 and 96 Khz, but I'm not sure if they do with low Q values. APO with the biquads uses the sample rate that has been requested from the device, by the application, and that has been Firefox, requesting 44.1 Khz. ***Īnother thing is, now that I have chosen RBJ biquads, I'm bound to the sample rate, I believe. And post-ringing-only in my mind would sound wet, because it's post, like a response, resembling a reverb-system, a bit. My (?) idea was (back then) that pre-ringing plus post-ringing sounds dry, because it's symmetric. But I'm not sure what I heard (FIR just sounded a bit dryer), and it's been long ago, and now I have this 560s headphone and am getting used to it. Do you hear such things? I heard it when I tried IIR vs FIR. does anyone mix them or am I overthinking it already?Īnother thing is the ringing types. Biquads for low frequencies, FIR / fftwf_execute for high frequencies? There the filter kernel can be smaller, right? So. But maybe I could mix filter types, each corner of the spectrum gets the adequate filters? Like. I thought, RBJ Biquad would give not as much latency when making music and using APO. But I actually just wanted to see round things in the graph in APO and thought that it also had less computations than the graphical straight-line-tool-EQ (it uses fftwf_execute, so FFT in general, correct?). I remembered I could use biquad filters, because. I used RBJ biquad filters to get better sound out of my headphones. I didn't go the standard route in APO I guess. What kinds of artefacts can be heard, which cannot?
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