Impossible to answer.
It is not only the design & construction of the helmet that determines how loud it is.
Your height & sitting position, the bike you ride & the shape & design of any screens and/or fairings fitted play a major role. What works for you may not work for someone else who is a few inches shorter or taller wearing the same helmet on the same bike.
Fairings do not always result in a lack of noise. My fully faired K100LT & Shoei was noisier with the visor down than up? The windnoise on my GSX-R was quieter at 110mph than my K100 was at 85mph.
If you can reduce any buffeting present, then you may well also reduce wind noise at the same time.
What bike are you riding?
Steve
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