ABSTRAK – Teknologi biometrik sedang menjadi tren teknologi dalam berbagai bidang kehidupan. memanfaatkan bagian tubuh manusia sebagai alat ukur sistem yang memiliki keunikan disetiap individu. Suara merupakan dan cocok dijadikan mengadopsi biometrik. Sistem pengenalan suara adalah salah satu penerapan fokus kepada manusia. memerlukan metode ekstraksi fitur klasifikasi, MFCC. MFCC dimulai dari ...

The existing approaches to detecting synthesized speech, based on the current issues of synthesizing voice sequences, are considered. stages algorithm for spoofing attacks biometric systems described, and its final workflow is presented. research focuses mainly as it most dangerous type attacks. authors designed a software application an experimental study, present structure propose detection s...

Mel-frequency cepstral coefficients (MFCCs) are efficient audio descriptors providing spectral energy measurements over short time windows of length 23 ms. These measurements, however, lose non-stationary spectral information such as transients or time-varying structures. It is shown that this information can be recovered as spectral co-occurrence coefficients. Scattering operators compute thes...

The asymptotic covariance matrix of the empirical cepstrum is analyzed. We show that for Gaussian processes, cepstral coefficients derived from smoothed periodograms are asymptotically uncorrelated and their variances multiplied by the sample size T tend to unity. For an autoregressive process and its autoregressive cepstrum estimate, somewhat weaker results hold.

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In this paper, we propose a peak-weighted cepstral lifter (PWL) for enhancing the spectral peaks of an all-pole model spectrum in the cepstral domain. The design parameter of the PWL is the degree of pole enhancement or pole shifting toward the unit circle. The optimal pole shifting factor is chosen by considering the sensitivity to spectral resonance peaks, the variability of cepstral variance...