Since I'm a very sophisticated perfectionist, I am looking for a way to remove unwanted low frequencies from the audio spectrum, simultaneously keeping its peaks intact.

I have used TDR Nova (Surgical Insane+ settings) and Fruity Limiter, where — as seen on the picture — I've cut the area in the green square, which is 50 Hz, but it doesn't matter. What matters is that the peaks that I've marked in red squares are creating some sort of *peaks*, and it applies to ANY limiter I've used.

I know that nothing is entirely possible, howe ver this event occurs on EVERY limiter I've used (Voxengo Elephant and Maximus), BUT without them the lower spectrum area (lower than 50 Hz mentioned earlier) is completely clear. I also understand that limiters are not designed to make my spectrogram clear, but the waveform.

Likewise, I've tried looping this effect chain, but — in the terms of logic — it's an endless loop.

Is there any solution to my problem that may come as VST plugin? Like hyper-transparent limiter?

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I'm not sure I understand what you are trying to say. A limiter is a compressor with high ratio (above 10:1) with fast attack and fast release.

If you mean you get a louder peak with the filter, are you aware about the boosting of frequencies around the cutoff (at high dB/oct slopes)? Say around 1dB boost because of that 120dB/oct cut.

 

Last edited: Aug 1, 2023

This is a loophole in FFT, a 0 hertz noise that comes and goes (unlike DC offset which stays the same). This is not actually audible in any sense. I repeat, this is a loophole in Fourier transform that makes it mistake non-symmetrical waveforms for a zero hertz noise.
If you try to "filter" it out as you would with DC offset - you just make the waveform more symmetrical, undoing what the limiter just did and getting peaks.

 

Looking at your filter settings, it's also phase shift due to a very steep slope. Dude, relax your hi-passing. DC offset is filtered out just fine by a 6 dB/o hi-pass at 1 hertz, you don't need that.
The only solution to your problem, then, is to look up maths behind all this and to stop calling neuroticism a "perfectionism". It's a mental health issue, not a positive trait. I'm speaking from experience.

 

Last edited: Aug 1, 2023

Either choose (radically) more gentle slopes or fully embrace the creative aspect of 120db/octave filters and try the BusShaper HPF JSFX from Tokyo Dawn Labs' Russian VK page.