Exploiting variable length segments with coarticulation effect in online speech recognition based on deep bidirectional recurrent neural network and context-sensitive segment

2021 ◽  
Author(s):  
Song-Il Mun ◽  
Chol-Jin Han ◽  
Hye-Song Hong
Keyword(s):  
Neural Network ◽  
Speech Recognition ◽  
Recurrent Neural Network ◽  
Variable Length ◽  
Context Sensitive

scholarly journals Fast and accurate recurrent neural network acoustic models for speech recognition

2015 ◽  
Author(s):  
Haşim Sak ◽  
Andrew Senior ◽  
Kanishka Rao ◽  
Françoise Beaufays
Keyword(s):  
Neural Network ◽  
Speech Recognition ◽  
Recurrent Neural Network ◽  
Acoustic Models

scholarly journals Research on Speaker Recognition of DRNN in Different Noise Environment

2020 ◽  
Author(s):  
chaofeng lan ◽  
yuanyuan Zhang ◽  
hongyun Zhao
Keyword(s):  
Neural Network ◽  
Speech Recognition ◽  
Recurrent Neural Network ◽  
Speaker Recognition ◽  
Signal To Noise Ratio ◽  
Recognition Rate ◽  
Noisy Environment ◽  
Signal To Noise ◽  
Noise Ratio ◽  
Improved Model

Abstract This paper draws on the training method of Recurrent Neural Network (RNN), By increasing the number of hidden layers of RNN and changing the layer activation function from traditional Sigmoid to Leaky ReLU on the input layer, the first group and the last set of data are zero-padded to enhance the effective utilization of data such that the improved reduction model of Denoise Recurrent Neural Network (DRNN) with high calculation speed and good convergence is constructed to solve the problem of low speaker recognition rate in noisy environment. According to this model, the random semantic speech signal with a sampling rate of 16 kHz and a duration of 5 seconds in the speech library is studied. The experimental settings of the signal-to-noise ratios are − 10dB, -5dB, 0dB, 5dB, 10dB, 15dB, 20dB, 25dB. In the noisy environment, the improved model is used to denoise the Mel Frequency Cepstral Coefficients (MFCC) and the Gammatone Frequency Cepstral Coefficents (GFCC), impact of the traditional model and the improved model on the speech recognition rate is analyzed. The research shows that the improved model can effectively eliminate the noise of the feature parameters and improve the speech recognition rate. When the signal-to-noise ratio is low, the speaker recognition rate can be more obvious. Furthermore, when the signal-to-noise ratio is 0dB, the speaker recognition rate of people is increased by 40%, which can be 85% improved compared with the traditional speech model. On the other hand, with the increase in the signal-to-noise ratio, the recognition rate is gradually increased. When the signal-to-noise ratio is 15dB, the recognition rate of speakers is 93%.

Recurrent neural network-based speech recognition using MATLAB

2020 ◽  
Vol 7 (1/2/3) ◽  
pp. 56 ◽  
Author(s):  
Praveen Edward James ◽  
Mun Hou Kit ◽  
Chockalingam Aravind Vaithilingam ◽  
Alan Tan Wee Chiat
Keyword(s):  
Neural Network ◽  
Speech Recognition ◽  
Recurrent Neural Network
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