#$%^&*AU2016200689A120160908.pdf#####14 NARROWBAND ANALOG NOISE CANCELLATION ABSTRACT A method, including receiving an input analog signal containing noise at a specific noise frequency and digitizing the input analog signal to form a digitized signal. The method also includes recovering a first amplitude and a first phase of the noise from the digitized signal, and generating an analog correction signal at the specific noise frequency. The analog correction signal has a second amplitude equal to the first amplitude and a second phase opposite to the first phase. The method further includes summing the input analog signal with the analog correction signal to generate an output analog signal. 2549655vlFIG. 1 60 20 32 28 64 26 22 50 54 26 PROCESSING NOISE-CANCELLATION I - MODULE 46 44/- ECG MODULE SYSTEM PROCESSOR 40
