[PDF] cepstrum pitch determination

  • How is pitch detection using cepstrum?

    Among them, cepstrum-based pitch detection as a frequency domain method has often been used in practice. Cepstrum is calculated as the inverse Fourier transform of the logarithm of signal spectrum.
    The fundamental frequency and pitch in this way is estimated as the maximum value of cesptrum in the defined segment.

  • What is the cepstrum method?

    The method is a tool for investigating periodic structures in frequency spectra.
    The power cepstrum has applications in the analysis of human speech.
    The term cepstrum was derived by reversing the first four letters of spectrum.

  • What is a cepstral analysis of speech?

    The cepstrum is a common transform used to gain information from a person's speech signal.
    It can be used to separate the excitation signal (which contains the words and the pitch) and the transfer function (which contains the voice quality).

  • What is a cepstral analysis of speech?

    One group of pitch detection methods uses the detection and timing of some time domain feature.
    Other time domain methods use autocorrelation functions or difference norms to detect similarity between the waveform and a time lagged version of itself.

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