Towards a rapid-distortion theory model of turbulent flow for wind noise within an impermeable windscreen

• DOI: 10.1121/10.0027005
• Publication Date: 2024-07-03T12:20:30Z
• Authors: Gordon M. Ochi; Carl R. Hart
• Keywords: Distortion (music)

Current models for the wind noise reduction (WNR) of microphone windscreens in atmospheric turbulence generally work under assumption a homogeneous surface pressure averaging theorem. Under this theorem, pressures should average such way that spectrum at low wavenumbers relative to windscreen dimension approach an unscreened microphone. Contrasting this, experiments have actually observed significant WNR these wavenumbers. In work, we examine Rapid Distortion Theory model linking turbulent distortion unsteady received inside windscreen. The theoretical background and underlying assumptions are examined detail [R. Zamponi, et al., J. Fluid Mech. 915:A27 (2021)], then results case impermeable cylinder presented. Future on project involving both development experimental verification discussed.