15. The at least one non-transitory computer-readable storage medium of claim 12 , wherein the determining, based at least in part on phrase characteristics of an audio phrase, comprises determining whether an audio phrase corresponds to each one text phrase based at least in part on at least two of a gender of a speaker, an age of a speaker, a native language of a speaker, a region of childhood residence of the speaker, at least one environmental characteristic of the audio phrase, at least one audio capture characteristic of the audio phrase, and a signal to noise ratio (SNR) present in the audio phrase.
16. The at least one non-transitory computer-readable storage medium of claim 15 , wherein the method further comprises: specifying at least one constraint for the determining, wherein said at least one constraint specifies a value for at least one of the phrase characteristics, wherein determining, for each one text phrase, whether there is an audio phrase that corresponds to the one text phrase, based at least in part on the phrase characteristics, comprises identifying, from the plurality of stored audio phrases, audio phrases having an associated phrase characteristic value matching the at least one constraint and reviewing the identified audio phrases to determine whether the audio phrases having the associated phrase characteristic correspond to the one text phrase.