Abstract: A computer implemented method, system and computer program product for evaluating pronunciation. Known phonemes are stored in a computer memory. A spoken utterance corresponding to a target utterance, comprised of a sequence of target phonemes, is received and stored in a computer memory. The spoken utterance is segmented into a sequence of spoken phonemes, each corresponding to a target phoneme. For each spoken phoneme, a relative posterior probability is calculated that the spoken phoneme is the corresponding target phoneme. If the calculated probability is greater than a first threshold, an indication that the target phoneme was pronounced correctly is output; if less than a first threshold, an indication that the target phoneme was pronounced incorrectly is output. If the probability is less than a first threshold and greater than a second threshold, an indication that pronunciation of the target phoneme was acceptable is output.

Abstract: A method for comparing a first audio data source with a plurality of audio data sources, wherein the first audio data source has an utterance spoken by a first person and the plurality of audio data sources have the same utterance spoken by a second person. The method includes performing a speech recognition function on the first audio data source to isolate at least one element of the first audio data source. The method also includes comparing the isolated element with a corresponding element in the plurality of audio data sources and determining whether the utterance spoken by the first person contained an error based on the comparison.