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  • Recognition of selected spoken digits

    Creator:
    Simasathien, Phojana
    Abstract:
    This thesis is concerned with the design of a speech recognition system to recognize digits 1, 2, 3 and 4. The system was designed by using the characteristics of the spectral patterns of amplitude vs. time at discrete frequencies. Data obtained for digits 0 to 9 are presented. The outputs...
    Resource Type:
    Masters Thesis

  • Speech deconvolution using Gaussian pulses

    Creator:
    Asadi, Mohammad Ayman O.
    Abstract:
    This dissertation introduces a new idea for frequency domain deconvolution of speech signals. The idea is to approximate a unit sample by a Gaussian pulse. The deconvolution is performed by designing a glottal inverse filter that will estimate the excitation of the vocal tract. Then, the excitation will be used...
    Resource Type:
    Masters Thesis

  • A VHDL description of speech recognition front-end

    Creator:
    Xiao, Xin
    Abstract:
    This thesis investigates an implementation of speech recognition front-end. It is an application specific integrated circuit (ASIC) solution. A Mel Cepstrum algorithm is implemented for the feature extraction. We present a new mixed split-radix and radix-2 Fast Fourier Transform (FFT) algorithm, which can effectively minimize the number of complex multiplications...
    Resource Type:
    Masters Thesis