Digging deeper into Error Correction

Hans Polak read with great interest Giovanni Stochino’s articles addressing active feedback and error correction in LA Vol 7 and 8. Several implementations were given, illustrating how to translate a mathematical scheme into a practical solution, and exactly in the implementations it where Hans has a different view on things. He in particular feels that Balanced Error Feedback (BEF) is a version of Active Error Feedback and not a separate concept that stands on its own; also, using two resistors in the context of Stochino’s article to form an adder is not at all a 1:1 replacement for a mathematical adder. This extended letter has led to an article, with a reply from Stochino in this same issue.