Enhancement automatic speech recognition by deep neural networks

Automatic Speech Recognition with Deep Neural Networks for Impaired Speech

Automatic Speech Recognition has reached almost human performance in some controlled scenarios. However, recognition of impaired speech is a difficult task for two main reasons: data is (i) scarce and (ii) heterogeneous. In this work we train different architectures on a database of dysarthric speech. A comparison between architectures shows that, even with a small database, hybrid DNN-HMM mode...

An Automatic Dysarthric Speech Recognition Approach using Deep Neural Networks

Transcribing dysarthric speech into text is still a challenging problem for the state-of-the-art techniques or commercially available speech recognition systems. Improving the accuracy of dysarthric speech recognition, this paper adopts Deep Belief Neural Networks (DBNs) to model the distribution of dysarthric speech signal. A continuous dysarthric speech recognition system is produced, in whic...

Binary Deep Neural Networks for Speech Recognition

Deep neural networks (DNNs) are widely used in most current automatic speech recognition (ASR) systems. To guarantee good recognition performance, DNNs usually require significant computational resources, which limits their application to low-power devices. Thus, it is appealing to reduce the computational cost while keeping the accuracy. In this work, in light of the success in image recogniti...

Deep segmental neural networks for speech recognition

Hybrid systems which integrate the deep neural network (DNN) and hidden Markov model (HMM) have recently achieved remarkable performance in many large vocabulary speech recognition tasks. These systems, however, remain to rely on the HMM and assume the acoustic scores for the (windowed) frames are independent given the state, suffering from the same difficulty as in the previous GMM-HMM systems...

Neural Networks in Automatic Speech Recognition