Hmm-dnn speech recognition techniques: a review

This paper presents a view about the HMM-DNN hybrid approach for speech recognition. Speech recognition is becoming an active research area in the field of computer science. Many researchers have developed a good deal of methods and techniques for speech recognition. A new trend is to use hybrid approaches for this particular task. One of this hybrid approaches is to use a combination of HMM-DNN and the result is found to be quiet successful. From study it has been found that the above approach outperforms the other traditional methods like GMM-HMM. This paper gives a basic idea about HMM and DNN model and then finally the use of HMM-DNN hybrid approach in different speech recognition techniques.