Input admittance measured at the bridge for the Test Violin and the two Control Violins. Black curves indicate the “Before” phase and gray curves indicate the “After” phase; the Pearson correlation coefficient between these two states is provided in the top-left corner of each panel. The bottom panel displays the magnitude difference between the “Before” and the “After” phases for each instrument. Shaded areas represent the measurement uncertainty (minimum and maximum values over 3 repetitions).