A hearing prosthesis for delivering stimuli to a hearing-impaired recipient is disclosed, the hearing prosthesis comprising: a sound transducer for converting received sound signals into electric audio signals; a sound processor for converting said electric audio signals into stimuli signals; a stimulator for delivering said stimuli to the recipient; a memory for storing data representative of sound signals; and a controller configured to cause selected sound data to be retrieved from said memory and processed by said sound processor.