The document describes the development of an electronic esophageal stethoscope to objectively record and analyze heart and lung sounds during surgery. It aims to remove the subjectivity of auscultation by developing software to record high-quality sounds, remove ambient noise, and potentially provide automated diagnosis. The current prototype uses LabVIEW to record sounds but signal subtraction is insufficient for noise cancellation. Wavelet analysis shows promise. Future work will refine the hardware and software, develop sound visualization, and program automated diagnosis of recordings.