In this
study, we investigated the contribution of the multiple regression to robust
noisy speech recognition in improving the recognition rates. When the noisy
speech recognition process is carried out; first of all, an Affine
Transformation is performed in order to map the feature vectors of noisy speech
into those of clean speech. After transforming, the recognition step is
achieved using the Common Vector Approach (CVA). We used several multiple
linear as well as non-linear regression models to improve the recognition rates
by adding non-linear terms into the model during the affine transformation
stage. In the experimental study, the recognition rates of the noisy speech
signals with 0 dB, 5 dB, 10dB, and 20 dB Signal-to-Noise Ratio (SNR) values
have been obtained. Noisy speech which has 20, 10, 5, and 0 dB SNR is obtained using
MATLAB by adding white Gaussian noise on the clean speech taken from the Texas
Instruments (TI) Digit Database. Improvements are observed when non-linear
terms are introduced into the model.
Journal Section | Articles |
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Authors | |
Publication Date | October 1, 2014 |
Published in Issue | Year 2014 Special Issue of XIV. International Symposium on Econometrics, Operations Research and Statistics |
Dergimiz EBSCOhost, ULAKBİM/Sosyal Bilimler Veri Tabanında, SOBİAD ve Türk Eğitim İndeksi'nde yer alan uluslararası hakemli bir dergidir.