System and method for applying a uniform dynamic gain over cardiac data with the aid of a digital computer

A system for applying a uniform dynamic gain over cardiac data with the aid of a digital computer, comprising:

• at least one computer processor configured to execute code comprising:
• a value module configured to obtain a time series of a plurality of voltage values that comprises a digital representation of a raw electrocardiography (“ECG”) signal recorded by an ambulatory monitor recorder, the time series comprising segments of noise and segments of non-noise;
• an identification module configured to identify the noise segments and the non-noise segments;
• a definition module configured to define a plurality of temporal windows within the non-noise segments;
• an analysis module configured to analyze the segments of non-noise and to determine a single gain factor for all of the values in the analyzed non-noise segments based on the analysis, wherein the analysis comprises analyzing a plurality of the values within each of the temporal windows;
• and
• a gain module configured to apply the single gain factor to all of the values in the non-noise segments.