| Summary: | 碩士 === 中華技術學院 === 電子工程研究所碩士班 === 96 === ABSTRACT
According to past papers, we find that the algorithm based on Mel-frequency cepstral coefficients (MFCCs) has a better performance than any other algorithms which based on the other feature parameters [1-7]. The Mel-frequency cepstral coefficients are taken by following procedures, including: framing, multiplied by the Hamming Window, taking the fast Fourier transform (FFT), filtered in frequency domain by Mel-frequency triangular filter bank, calculating the logarithmic energy of filter outputs, and taking discrete cosine transform (DCT) to obtain the Mel-frequency cepstral coefficients.
In this paper, for finding the Mel-frequency cepstral coefficients, the conventional frequency domain filtering procedures [1] are replaced by our new directly time domain filtering procedures proposed in this thesis. The simulation results show that the performances between our new method and the previous approach [1] are quite similar.
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