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adau1761. Need help to make speakerphone without microphone effect

Question asked by arm_dev on Jan 11, 2016
Latest reply on Jan 14, 2016 by DaveThib

Input signal form mic goes to the adau1761. From output of adau1761, boosted signal goes to speakerphone. Sometimes I listen self-excitation. How can I supress self-excitation in the adau1761?

I mean, that in same time I speak to mic, listen boosted signal from speaker, but without mic effect.