V70II “Blows on the ridge”

From about 80 km/h – depending on the wind direction – comes a sound like “blown on the comb with butterbread paper” from the dashboard area above the glove compartment. If you sit on the right side of the ARmaturenbrett with a flat hand, one from above is hearty, the noise sometimes goes away. Ventilation on / off / adjust, sliding roof on / to bring nothing. Did anyone ever have that?