Abstract: A concept, method and apparatus for detecting and correcting an accent by means of sound morphing is provided. The input audio signal is analyzed for finding pre-specified unwanted speech patterns, i.e. phonemes or groups of phonemes that are to be corrected, for instance because they represent a foreign accent. These unwanted sounds are then modified or completely replaced by the pre-stored replacement audio patterns, adjusted to the current pitch and voice timbre of the user. The degree of speech modification, i.e. the set of phonemes to be modified, can be set at a desired level. The system works in two modes: first, learning, i.e. storing the unwanted and the replacement phoneme patterns, and second, the correction mode which performs phoneme modification based on the stored information. The implementation is both in software and hardware.