FIG. 9.

(Color online) Field reconstruction errors (top) for the focused source as a function of the uncertainty in temperature at which the field measurements were made. This uncertainty is presumed to comprise a constant bias in the sound speed used in reconstructing the source hologram. The measurement region is located at $z_{\mathrm{h}}=50$ mm with aperture $2a_{\mathrm{h}}=150$ mm. Bottom images illustrate reconstructed source holograms for the indicated temperature biases.