The present disclosure relates to an echo controller, for use with a microphone and a device comprising a loudspeaker, the echo controller comprising: a sensor with sensing capabilities configured to provide displacement-signalling representative of a displacement of a diaphragm of the loudspeaker, wherein the sensing capabilities of the sensor are isolated from an external environment of the device; and a cancellation block configured to determine a cancellation-signal based on the displacement-signalling; wherein the cancellation-signal is for adapting a received-signal provided by the microphone to determine an echo-cancelled-signal.