In Mela, signals flow left-to-right within a lane and top-to-bottom between lanes. Sometimes, however, you may want to send an Audio signal in the opposite direction to create feedback. The Feedback module allows you to do just that by taking the output of an Audio bus, delaying it by 1 sample, and merging it with the Audio signal passing through the lane. WARNING: Protect your ears and equipment by handling feedback with care. Ensure the feedback does not build up continuously. I plan to add auto-mute or hard limit to prevent such cases. At the moment feedback doesn't work with the Poly signal type, i.e. it auto-collapses it to Audio, but I plan to support it once Audio buses can transmit Poly. Feedback is a Mela Lab module and part of Collection 4.