Speech Recognition with Viterbi-Decoding

Implementation of Viterbi decoding for the number recognition
(Machine Learning, Korea University)

  • Transition probabilty was pre-trained by Baum-Welch algorithm
  • Observation probability is defined by Gaussian Mixture Model
  • Transition probability within words was defined by unigram and bigram probability.

Results

99.88% accuracy in words and 96.38% accuracy in sentences.