Figure 5.

(a–d) are normalized signals for i = j = 8 corresponding to the full matrix, $h_{i,j}(t)$, $d_{i,j}(t)$, $g_{i,j}(t)$, and $f_{i,j}(t)$ with a 1.0 MHz excitation frequency and 16 elements. (e–h) are normalized signals for i = j = 16 corresponding to the full matrix, $h_{i,j}(t)$, $d_{i,j}(t)$, $g_{i,j}(t)$, and $f_{i,j}(t)$ with a 2.5 MHz excitation frequency and 32 elements.