Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.01 vteřin. 
Codec Detection from Speech
Jon, Josef ; Matějka, Pavel (oponent) ; Černocký, Jan (vedoucí práce)
This thesis deals with codec detection from compressed speech signal. The primary goal was to identify which features distinguish selected codecs, and then create an environment facilitating experiments with various types of classifiers and their configurations. Support vector machines and neural networks, modeled using the Keras library, were used. The main contribution of this work is the experimental part, in which the effects of the neural networks parameters are discussed. After tuning the parameters and finding their optimal values, the network achieved accuracy over 98% on a test set comprising data from six different codecs.
Codec Detection from Speech
Jon, Josef ; Matějka, Pavel (oponent) ; Černocký, Jan (vedoucí práce)
This thesis deals with codec detection from compressed speech signal. The primary goal was to identify which features distinguish selected codecs, and then create an environment facilitating experiments with various types of classifiers and their configurations. Support vector machines and neural networks, modeled using the Keras library, were used. The main contribution of this work is the experimental part, in which the effects of the neural networks parameters are discussed. After tuning the parameters and finding their optimal values, the network achieved accuracy over 98% on a test set comprising data from six different codecs.

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