Measured acceleration at collector point L during playing situation on the structure composed of one resonator, one collector (a to d), and with one tuned whisker (e to h). In (g and h), the whisker is moving slowly with large amplitude. On the first line are the acceleration versus time; on the second, line the associated spectrogram. The acceleration amplitude is normalized by the maximum amplitude measured. The fundamental frequency is H ₁ = 191 Hz. The sounds are available in the complementary materials.