how to reduce the nasal sound of a voice in a sound take

[Krakatau]

I quickly tried to reduce nasal sound on a voice stem, using cumulatively both neutron sculptor and nectar deEsser with relative success

But I assume it should exist a specific plugin on that task ?

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[Krakatau]

...the related song that deserves a voice correction, ...though its her natural sounding voice, the sound takes seems to exaggerate the nasal character of her voice

[Vortifex]

You can't really try to process someone's innate vocal character away without making it sound like shit. De-essing and EQ will only get you so far. If the voice is bad then use another voice.

[Krakatau]

okay

[Dirk Diggler]

EQ would be the traditional route.
Perhaps a little spectral analysis to determine optimal center frequency.

[Krakatau]

thank you

[BBFG#]

...the related song that deserves a voice correction, ...though its her natural sounding voice, the sound takes seems to exaggerate the nasal character of her voice

There are vocal exercises to achieve that "nasal" sound. It is one of the basics with throat singing. Trying to effect that out is completely missing the point of the performance.
Thank you for sharing the video though.

[Krakatau]

glad you appreciate it,i think this is a very touching melody , builded up in a subtle manner

[fisherKing]

not at my workspace, but you could try a de-esser, and tune it to affect the eq area where that tonality is most noticeable... an eq (like fabfilter's pro-eq4) can also do this with dynamic eq...

[Uncovered Pitch]

I would go for a spectral resonance suppressor. My favourite for this kind of job is Three-Body Technology SpecCraft, but I also have TB Pro Audio DSEQ3 and Mastering The Mix RESO. These tools make the most sense when the resonances shift according to the pitch of the melody.

If the frequency is constant then yes a simple dynamic or even static EQ will suffice. Pro Q4 has all three options so if you have it maybe go with that one first.

[osiris]

Add body with an EQ boost at 150-300Hz before making any cuts as this alone can correct more subtle nasal vocals.
Cut between 1-2k as this is a core range for nasally vocals. Overtones also exist around 4k. Saturate or use a tape plugin, possibly a chorus.

[sandandpaint]

...the related song that deserves a voice correction, ...though its her natural sounding voice, the sound takes seems to exaggerate the nasal character of her voice

There are vocal exercises to achieve that "nasal" sound. It is one of the basics with throat singing. Trying to effect that out is completely missing the point of the performance.
Thank you for sharing the video though.

100%

[kraster]

As others have said trying to remove nasal resonances where it's a feature will most likely sound pretty terrible.

Having said that for more general nasal resonance treatment the primary resonances (honky or boxy tones) are in the 250 to 500 hz range. A resonance suppressor set to those ranges can mitigate that. DSEQ 3 is very good for getting very specific as is baby audio's smooth operator pro.

Secondary nasal formants are higher up (around 1k) and are what are responsible for the more pinched sound that's associated with higher nasal resonances.

The problem is that with a lot of trying to change these things is that they can interfere with other parts of the voice. The nasal cavity also contributes anti-resonances (spectral voids).

Messing around too much with these things just leaves you with weird, hollow, phasey and artificial sounding vocals.

Any correction that's usually done to correct would be more about taming specific room or mic resonances that are excited by nasal resonances and even then it should be used very sparingly.

[Ah_Dziz]

Yeah. Just a bit of EQ to pull back any frequencies that "poke out" too much. The vocal will still be "nasal" but should get easier on The ears. In a more general bit of advice, these types of issues can be more easily addressed with microphone selection and placement and then to a smaller extent the preamp used.

[osiris]

You can always try a good Formant Filter.