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The detection of human and spoofing (synthetic or converted) speech has started to receive an increasing amount of attention. In this paper, modified relative phase (MRP) information extracted from a Fourier spectrum is proposed for spoofing speech detection. Because original phase information is almost entirely lost in spoofing speech using current synthesis or conversion techniques, some phase information...
In speech processing, speech signal is usually processed frame by frame due to the non-stationary characteristic of speech. In this paper, a frequency-domain averaging based frame smoothing method is proposed. Besides the conventional frame shift, we introduce a short time shift to create several frames around current frame. Then we take the average of power spectrum for these frames. The average...
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