cepstrum

[′sep·trəm]

(acoustics)

The Fourier transform of the logarithm of a speech power spectrum; used to separate vocal tract information from pitch excitation in voiced speech.

cepstrum

(mathematics)

(Coined in a 1963 paper by Bogert, Healey, and Tukey) The Fourier transform of the log-magnitude spectrum:

fFt(ln( | fFt(window . signal) | ))

This function is used in speech recognition and possibly elsewhere. Note that the outer transform is NOT an inverse Fourier transform (as reported in many respectable DSP texts).

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

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References in periodicals archive

The method is based on properties of the cepstrum domain, described in the chapters to come.

GENERAL PSF RETRIEVAL AND IMAGE DEBLURRING USING THE CEPSTRAL DOMAIN

The performance of the latent image is evaluated by gradient cepstrum analysis.

An Adaptive Iterative Algorithm for Motion Deblurring Based on Salient Intensity Prior

During the coding procedure 39 coefficients for each signal frame were computed consisting of 12 Mel-frequency cepstrum coefficients (MFCC) and the energy plus the delta coefficients and the acceleration coefficients [5].

Advanced Recognition of Lithuanian Digit Names Using Hybrid Approach

MFCC is an acronym for Mel Frequency Cepstrum Coefficient (MFCC), which is based on human auditory properties and is nonlinearly related to Hz frequency.

Beijing Opera Synthesis Based on Straight Algorithm and Deep Learning

Zhu, "Feature extraction of underwater target signal using Mel frequency cepstrum coefficients based on acoustic vector sensor," Journal of Sensors, vol.

Open-Lake Experimental Investigation of Azimuth Angle Estimation Using a Single Acoustic Vector Sensor

Los metodos mas explorados son los espectrales, en los cuales se realizan transformaciones basadas en la transformada de Fourier para mejorar la deteccion de la frecuencia fundamental, tales como las funciones de retardo de grupo, la transformada Cepstrum, la transformada Chirplet polinomica y la transformada Hilbert-Huang.

TECHNIQUES FOR DETECTING VOICE FUNDAMENTAL FREQUENCY IN REAL ENVIRONMENTS/TECNICAS DE DETECCION DE LA FRECUENCIA FUNDAMENTAL DE LA VOZ EN ENTORNOS REALES/TECNICAS DE DETECCAO DA FREQUENCIA FUNDAMENTAL DA VOZ EM ENTORNOS REAIS