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Short burst phase keying (SBPK) pulses generated in MATLAB (A) and, (B) and (C) measured at the focus using a polyvinylidene difluoride needle hydrophone. The waveform shown in (C) is a zoomed version of (B), indicated by the red box in (B). (C) shows the characteristics of SBPK exposures at the focus, including inverted pulse pairs and varying resultant magnitudes due to the interference of phase shifted pulses from the two transducers.
