Speech Recognition Using HMM with MFCC-An Analysis Using Frequency Specral Decomposion Technique
Ibrahim Patel, Y. Srinivas Rao · Signal & Image Processing An International Journal · 2010
This paper presents an approach to the recognition of speech signal using frequency spectral information with Mel frequency for the improvement of speech feature representation in a HMM based recognition approach.A frequency spectral information is incorporated to the conventional Mel spectrum base speech recognition approach.The Mel frequency approach exploits the frequency observation for speech signal in a given resolution which results in resolution feature overlapping resulting in recognition limit.Resolution decomposition with separating frequency is mapping approach for a HMM based speech recognition system.The Simulation results show an improvement in the quality metrics of speech recognition with respect to computational time, learning accuracy for a speech recognition system.