Patent ID: 9659559
Date: 2017-05-23
CPC Classifications: G06F,G10L

Claim:
1. A method of generating a phonetic distance matrix comprising: determining, for each of a plurality of phonemes occurring in the reference file, a plurality of phoneme error occurrences by comparing a recognized speech file with a reference file, the recognized speech file generated by processing at least one audio file of recorded speech with a speech recognition engine, the reference file representing the actual contents of the recorded speech; determining, for each of the plurality of phonemes occurring in the reference file, a plurality of phoneme error rates corresponding to the plurality of phoneme error occurrences; generating a plurality of phonetic distances as a function of the plurality of phoneme error rates, the plurality of phonetic distances being inversely proportional to the plurality of phoneme error rates; and outputting a phonetic distance matrix based on the generated plurality of phonetic distances, the phonetic distance matrix including generated phonetic distances between each of the plurality of phonemes; wherein generating the plurality of phonetic distances and outputting the phonetic distance matrix includes normalizing the generated phonetic distances to minimize a total separation between the outputted phonetic distance matrix and an existing phonetic distance matrix not generated based on the recognized speech file.