The vertical wires of the aperture grille have a resonant frequency and will vibrate in sympathetic resonance with loud sounds near the display, resulting in fluttering and shimmering of colors on the display.
synthetic aperture radar | Synthetic aperture radar | Cardan grille | ''Aperture'' | Microwave Imaging Radiometer with Aperture Synthesis | Inverse synthetic aperture radar | ''Grille'' | Aperture Foundation | 35 Bar and Grille LLC, et. al. v. The City of San Antonio |