Method and system to detect noise in cardiac arrhythmic patterns

A system for detecting noise in cardiac activity, comprising:

• memory to store specific executable instructions;
• one or more processors configured to execute the specific executable instructions for;
• obtaining a far field cardiac activity (CA) data set that includes far field CA signals for a series of beats;
• overlaying a segment of the CA signals with a noise search window;
• identifying turns in the segment of the CA signals;
• determining whether the turns exhibit a turn characteristic that exceed a turn characteristic threshold;
• declaring the segment of the CA signals as a noise segment based on the determining operation;
• shifting the noise search window to a next segment of the CA signal and repeat the identifying, determining and declaring operations;
• and
• modifying the CA signals based on the declaring the noise segments.