Patent ID: 8574163

Claim:
A system for noninvasively determining a source sound pressure of a source located inside of a body, the source transmitting a generally periodic acoustic signal including at least one signal component to a surface of the body, the system comprising: means for receiving the signal component at the surface of the body; means for estimating an initial phase-inverted signal component responsive to the signal component received at the surface, the phase-inverted signal component approximating a phase-inverted version of the received signal component; means for transmitting the phase-inverted signal component advanced by a predetermined time increment toward the source via the surface, the predetermined time increment corresponding to a distance of the signal component within the body; means for adjusting at least one feature of the transmitted signal component until a further received signal approximates a minimum value; means for setting the adjusted signal component as the phase-inverted signal component corresponding to the signal component at the distance, whereby the system determines the phase-inverted signal component that corresponds to the signal component being proximate to the source.