16. The computer system of claim 15 wherein the speech recognition engine generation module is further adapted to: (a) create a first speech recognition engine based on a first one of the speech corpuses; and (b) apply the first speech recognition engine to produce a recognized version of a second one of the speech corpuses, and wherein the comparison module is further adapted to calculate the distance as a first edit distance between the recognized version of the second one of the speech corpuses and the transcription of the second one of the speech corpuses.
16. The computer system of claim 15 wherein the speech recognition engine generation module is further adapted to: (a) create a first speech recognition engine based on a first one of the speech corpuses; and (b) apply the first speech recognition engine to produce a recognized version of a second one of the speech corpuses, and wherein the comparison module is further adapted to calculate the distance as a first edit distance between the recognized version of the second one of the speech corpuses and the transcription of the second one of the speech corpuses. 18. The computer system of claim 16 wherein the speech recognition engine generation module is further adapted to: (c) create a second speech recognition engine based on the second one of the speech corpuses; and (d) apply the second speech recognition engine to produce a recognized version of the first speech corpus, and wherein the comparison module is further adapted to calculate a second edit distance between the recognized version of the first speech corpus and the transcription of the first one of the speech corpuses.