Báo cáo hóa học: " Research Article Time-Frequency-Based Speech Regions Characterization and Eigenvalue Decomposition Applied to Speech Watermarking" pptx

... to (21)foreach time-frequency region SM(n, k)(obtained by using the S- method). Then, the eigenvalue decomposition is applied to R SM according to (23), resulting in eigenvalues and eigenvectors. ... routine is applied to the S-method), the eigenvalues and eigenvectors are obtained by using the Matlab built-in function (eigs). Twenty eigenvectors are selected, weighted by...

Ngày tải lên: 21/06/2014, 08:20

... 0, (13) where F k c = (F k−1 +F k )/2andF k Δ = (F k −F k−1 )/2. Parameters F k c and F k Δ correspond to the center frequency of the passband and the half of bandwidth, respectively. Convolution ... to frequency contour of the analyzed component. This approach is quite applicable to analysis of voiced speech since rough harmonic frequency trajectories can be estimated from the pi...

Ngày tải lên: 21/06/2014, 08:20

... condition to guarantee the existence of five or six solutions together with their sign properties to 1.1 is obtained. And this paper offers, to the best of our knowledge, a new method to deal with ... Corporation Boundary Value Problems Volume 2011, Article ID 172818, 19 pages doi:10.1155/2011/172818 Research Article Existence of Positive, Negative, and Sign-Changing Solutio...

Ngày tải lên: 21/06/2014, 05:20

... approach to extract features such as octave max and mean, energy ratio and length, and frequency ratio from the speech signals. This method was applied on continuous speech samples, and it resulted ... factors W and H to be nonnegative. In a previous study [15], we demonstrated that NMF decomposed factors promise a higher TF representation and localization compared to...

Ngày tải lên: 21/06/2014, 19:20

... basic factors related to speech intelligibility in noise. The signals were split into i third octave bands where the SNR (in dB) was calculated for each band i,asshownin(8) for the input and output of ... the subscripts S and N denoting the speech and noise components, respectively. As different frequency bands do not contribute equally to the intelligibility of speech, each ban...

Ngày tải lên: 21/06/2014, 08:20

... 0.1%. It might be due to the fact that the ITU-R prediction procedure is considered to be valid for frequencies up to at least 40 GHz and for path lengths up to 60 km, and the minimum path length ... combined (i.e., due to R, RS, S, F, FR, FS, and FRS together) over the 6-year period of observation on the FSO and RF paths are given in Figures 2 and 3. The large month -to-...

Ngày tải lên: 21/06/2014, 05:20

... Bu  t  , y  t   Cx  t  , 2.8 where x ∈ R n , u ∈ R m ,andy ∈ R p are the state, input and output vectors of the system and A ∈ R n×n , B ∈ R n×m , C ∈ R p×n ,andr r 1 ,r 2 , ,r n  T are the fractional ... 1 sec, h  0.0005, and v  1in3.8. where 0 <q 1,2 ≤ 1,x≥ 0,y≥ 0 are prey and predator densities, respectively, and all constants r, α, β, γ, δ are positive. For r...

Ngày tải lên: 21/06/2014, 05:20

... differential-operator equations and applications,” Integral Equations and Operator Theory, vol. 35, no. 4, pp. 485–506, 1999. 14 S. Yakubov and Y. Yakubov, Differential-Operator Equations: Ordinary and Partial ... operator Q is complete in L p G; E. Proof. Let IE 0 ,E denote the embedding operator from E 0 to E.FromResult2, there exists a resolvent operator Q  d −1 which is b...

Ngày tải lên: 21/06/2014, 05:20

... additive zero- mean complex noise and independent to all signals. x m,n (t) and w m,n (t) refer to the measurement and the noise corre- sponding to the mth vector sensor’s nth component, respec- tively; ... electromagnetic vector- sensor subarray averaging, and combine it with the propaga- tor method to estimate the DOA and polarization of coher- ent sources without eigen -d...

Ngày tải lên: 21/06/2014, 05:20

... Corporation Journal of Inequalities and Applications Volume 2011, Article ID 741095, 13 pages doi:10.1155/2011/741095 Research Article Littlewood-Paley g-Functions and Multipliers for the Laguerre ... hypergroup, and we denote this hypergroup by K. In this paper, we will consider the Littlewood-Paley g-functions on K and then we use it to prove the H ¨ olmander multipliers on...

Ngày tải lên: 21/06/2014, 06:20