Optimising wall-turbulence spectra for noise control

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The key idea for this project is to work backwards to optimisewall-turbulence noise reduction technologies. Usually the forwardapproach requires generating an idea then observing how it altersthe wall pressure spectrum and thus the radiated noise (currentexample include finlets, canopies, structured roughness). Thisproject would flip that idea on its head; what wall pressurespectrum produces the lowest radiated noise (subject to it stillbeing turbulent), and can we generate with designs that create thatspectrum? In doing so, an optimal wall covering could be developedthat minimises wall-turbulence noise.