Báo cáo hóa học: " Permutation Correction in the Frequency Domain in Blind Separation of Speech Mixtures" ppt

... envisaged. They ex- ploit either the continuity of the unmixing filters or the time structure of speech signals. The first idea consists of ensur- ing the continuity of the separation filter frequency ... papers of the authors [6, 7]. First, the spectral continuity of the mixing (and therefore of the unmixing) fi lters is used in the initialization of...

Ngày tải lên: 22/06/2014, 23:20

... small set of particular vectors (FINES vector set) in the estimated noise-only subspace instead of the entire estimated noise-only subspace as in the case of classic MUSIC. In FINES the principal ... originating at other locations. By applying Lagrange multipliers and completing the square (proof in Appendix), one obtains: The filter W(r dip ) is then applied to each...

Ngày tải lên: 19/06/2014, 08:20

... equipotential lines in the vicinity of a dipoleFigure 3 The current density and equipotential lines in the vicinity of a dipole. The current density and equipotential lines in the vicinity of a current ... directions of the anisotropy are limited along the axes of the coordinate system of the headmodel. In this case, the anisotropy is orthotrophic [93...

Ngày tải lên: 19/06/2014, 10:20

... space of measurable functions on Y which is of weak-types (p 0 ,q 0 ) and (p 1 ,q 1 ), then T is of type (p, q). Now, we prove the main theorem. Proof of Theorem 1.1. Under the assumption of the ... complete. Now, filling up next lemma, we finish the proof of Theorem 1.2. Lemma 4.3. Under the same assumption as Theorem 1. 2, if a v is defined in (4.14), then there is a...

Ngày tải lên: 20/06/2014, 22:20

... freezing, since the TCP source remains inactive just during the handoffs and makes the most of the available transmission time. However, standard TCP continues transmitting seg- ments during the ... of a primary user or incumbent in the current band in use. In this case, the CRN must rapidly switch to another channel (perform a frequency handoff), leading to the temp...

Ngày tải lên: 21/06/2014, 11:20

... covering map and Ω is a hyperbolic domain in ℂ, then the Poincaré density on Ω is derived from the equation λ  ( f ( z )) |f  ( z ) | = λ D ( z ), which is independent of the choice of f. Since ... proceeding, we prove the following lemma. Lemma 1. Under the hypotheses of the theorem, w and gwtendtothesameprime end at ∞ , and ∂gΩ ⊂ Ω. Proof. The first asser tion foll...

Ngày tải lên: 21/06/2014, 01:20

... properties of semi-spherical quantum dots considering, on the same footing, the confinement potential of the electron-hole pair and the Coulomb interaction between them. The exciton is confined in a ... =e,h). (2) The angle θ is the usual polar angle in spherical coor- dinates, and ω 0 the oscillator frequency considered in this study the same for the electron...

Ngày tải lên: 21/06/2014, 04:20

... obtained after the acquisition mode since the sampling frequency offset still remains uncompensated. The inaccuracy of the sampling clock frequency causes slow drift of the FFT window giving rise to ... T s is the sampling period, ζ is the damping factor, and f n is the natural frequency of the loop. In order to guarantee the stability of the loop, the d...

Ngày tải lên: 21/06/2014, 22:20

... wavelet coefficients in a certain node indicate the presence of the cor- responding basis in the signal and measure its contribution. Equivalently, they evaluate the content of the signal inside the related frequency ... expected since these bases span the subspace of the correlated com- ponent of the two signals, which is stronger in these nodes such that the...

Ngày tải lên: 22/06/2014, 23:20

... evaluate the performance of the SBA and the pro- posed algorithm in terms of speech quality and noise reduction, the SNR gain and speech distortion index [11,12] were used. The SNR gain, gSNR, is the ... described in Section 3, the proposed algorithm incorporates a fullband gain g 2 (n), which has the purpose of damping noise in longer speech pauses. The ga...

Ngày tải lên: 20/06/2014, 22:20