Download Advances in Nonlinear Speech Processing: International by Jordi Sole-Casals, Vladimir Zaiats PDF

By Jordi Sole-Casals, Vladimir Zaiats

This booklet constitutes the lawsuits of the foreign convention on Advances in Nonlinear Speech Processing, NOLISP 2009, held in Vic (Barcelona), Spain in the course of June 25-27, 2009. the amount bargains with new principles, concepts and effects on the topic of substitute techniques in speech processing.

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Additional resources for Advances in Nonlinear Speech Processing: International Conference on Nonlinear Speech Processing, NOLISP 2009, Vic, Spain, June 25-27, 2009, Revised Selected

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Then, as described in [12], we define two 30 ms windows: one at the beginning and the other one at the end of the zero-padded signal. As we shift both windows sample-by-sample towards the center, we calculate their squared difference function in each step. After down-sampling each difference function to 125 Hz (so that there are only 5 values remaining for each 40 ms long signal), the minimum value is taken at each time point. After dropping the first and the last value, these minimums are averaged to obtain the aperiodicity measure for the frame.

Determination of radius R (dashed line) for ZCZT computation by detecting, 50π ) (dotted lines), a discontinuity (indicated by rectangles) within the bounds exp(± 17L in the sorted root moduli (solid line) 4 Experimental Results This Section gives a comparative evaluation of the following methods: – the traditional ZZT-based technique: R = 1, – the proposed ZCZT-based technique: R is computed as explained at the end of Section 3 (see Fig. 2), – the ideal ZCZT-based technique: R is computed from Equation 3 where the real GCI location t∗ is known.

C). 4 Shift-Difference Amplitude (SDA) This cue estimates the irregularity of the glottal pulses. After preprocessing, two 10 ms windows are employed: one of them is initially shifted 2 ms to the left, while the other one is shifted 2 ms to the right of the center of the 30 ms frame [1]. In each step, both of the windows are shifted one sample away from the frame center and the squared difference signal of the two windowed waveforms is calculated. Then, the minimum of the difference signals is computed in each time point over all the window shifts.

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