1. An auditory training system, comprising: a user interface; and a processor configured to: present an initial set of auditory training sound tokens to a recipient of a hearing prosthesis; receive recipient feedback in response to presented sound tokens from the initial set of auditory training sound tokens, wherein the feedback indicates the recipient's perception of the presented sound tokens; and execute an interactive augmented genetic algorithm to automatically increase the difficulty of the auditory training based on the recipient's perception of the presented sound tokens to create a second set of auditory sound tokens for presentation to the recipient.