A system and method for enhancement and management of streaming audio is disclosed. A judging unit detects motion vectors from the correspondence information to determine variation of a field of view between the key frames. By way of example, the two walls are described herein as the abdominal and gastric walls, although it will be recognized that any two bodily walls may be fastened together utilizing the medical device and the methods described herein. Turning force of the screwing body is transmitted to the upper body. The diaphragm is used in a flush valve diaphragm assembly and a flush valve. The phase-locked loop circuit includes a digital control circuit configured to generate a curve select signal using a closed loop curve search operation to select one of the operating curves in the multi-curve VCO, the selected operating curve being used by the VCO to generate an output signal with an output frequency being equal or close to a target frequency of the phase-locked loop.