Browsing by Subject "Hyperbolic functions"

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    Time-scale wavelet scattering using hyperbolic tangent function for vessel sound classification
    (IEEE, 2017-08-09) Can, Gökmen; Akbaş, Cem Emre; Çetin, A. Enis
    We introduce a time-frequency scattering method using hyperbolic tangent function for vessel sound classification. The sound data is wavelet transformed using a two channel filter-bank and filter-bank outputs are scattered using tanh function. A feature vector similar to mel-scale cepstrum is obtained after a wavelet packed transform-like structure approximating the mel-frequency scale. Feature vectors of vessel sounds are classified using a support vector machine (SVM). Experimental results are presented and the new feature extraction method produces better classification results than the ordinary Mel-Frequency Cepstral Coefficients (MFCC) vectors. © EURASIP 2017.