5. Apparatus according to claim 2 wherein said reference-to-response comparing unit comprises a parameterization unit for extracting audio signal parameters from the reference and repetition audio specimens.
2. Apparatus according to claim 1 wherein the audio specimen scorer comprises: a reference-to-response comparing unit for comparing at least one feature of a user's repetition audio specimen to at least one feature of the reference audio specimen; and a similarity indicator for providing an output indication of the degree of similarity between at least one repetition audio specimen feature and at least one reference audio specimen feature.