Comparison between measured, analytically estimated and FEM estimated TL_an of flexible plate resonators with t_plate = 1 mm (a), 2 mm (b), 3 mm (c), 4 mm (d) and 10 mm (e). The measured TL_an have been calculated using the multi-microphone method for both terminations. The adjusted frequency fit TL_an value is estimated from a visually guess of the maximum response frequency f_max from the measurements.