A digital filter and filtering method uses a rate of change limit and an acceleration limit to significantly attenuate high bandwidth noise signals with minimal phase lag, while simultaneously passing low bandwidth signals substantially uncorrupted. The filter uses two memory states making it computationally efficient.

 
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> Fast computation of multi-input-multi-output decision feedback equalizer coefficients

> Cardiac magnetic field diagnozer for atrial flutter and atrial fibrillation and method for identifying electric turning path of atrial flutter and atrial fibrillation

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