in with an encoder and you also encode a future audio chunk we call you can call it as a target and you encode the target at the same encoder so now our goal is to maximize the mutual information between the context and target don't really worry about like what mutual information well why does it come out of nowhere that's not really the objective here the goal is we want to make sure that we learn a representation the encoder sits that its maximally predictive of the actual future when contrasted with with some fake futures