Báo cáo hóa học: " Research Article Perceptual Coding of Audio Signals Using Adaptive Time-Frequency Transform" pot

... pages doi:10.1155/2007/51563 Research Article Perceptual Coding of Audio Signals Using Adaptive Time-Frequency Transform Karthikeyan Umapathy and Sridhar Krishnan Department of Electrical and Computer ... novel ATFT coding technique for wideband audio signals. The proposed approach demon- strated the application of adaptive time-frequency transform for audio...

Ngày tải lên: 22/06/2014, 19:20

... multichannel audio codec dedicated to coding signals consisting of a dense series of transient-type events. These signals of which applause is a typical example are known to be problematic for such audio ... up-mix signals, where decorrelators are employed to enable the increase in the number of signals. Finally, the energy of the up-mix signals is matched to that of...

Ngày tải lên: 22/06/2014, 19:20

... Advances in Signal Processing Volume 2007, Article ID 19260, 8 pages doi:10.1155/2007/19260 Research Article Classification of Crystallographic Data Using Canonical Correlation Analysis M. Ladisa, 1 A. ... X-ray diffraction pattern ofascaffold volume element, called voxel. From the two- dimensional diffraction images of the grid in Figure 1 uni- dimensional signals were obtained by...

Ngày tải lên: 22/06/2014, 19:20

... the effect of oversmoothing. For this reason, the radius of a circle must be selected adaptively, based on local shapes of a curve. In this sec tion, we will first formulate the problem of selecting ... adjusting the radius adaptively, we observe that the precision of curvature estimation is significantly improved. Figure 5 depicts the estimation errors of using fixed radii and ada...

Ngày tải lên: 21/06/2014, 08:20

... Lee, “Design of digital hardware system for pulse signals, ” Journal of Medical Systems,vol.25,no.6,pp. 385–394, 2001. [7]W.Ran,J.I.Jae,andH.P.Sung,“Estimationofcentral blood pressure using radial ... an average classification rate of 91.74%, which is higher than or comparable with those of other state -of- the-art pulse waveform classification methods. One potential advantage of t...

Ngày tải lên: 21/06/2014, 08:20

... Processing Volume 2010, Article ID 695237, 9 pages doi:10.1155/2010/695237 Research Article Enumerative Encoding of TMTR Codes for Optical Recording Channel Hui-Feng Tsai Department of Computer Science ... method needs one bit of memory for encoding, but no memory is required for decoding. An enumerating algorithm is used for encoding/decoding, and a look-up table is not required....

Ngày tải lên: 21/06/2014, 08:20

... a nontrivial σ-algebra of subsets of Ω.LetP be a δ-ring of subsets of Σ, such that E ∩ A ∈Pfor any E ∈Pand A ∈ Σ. Let us assume that there exists an increasing sequence of sets K n ∈Psuch that ... the National Academy of Sciences of the United States of America, vol. 53, no. 6, pp. 1272–1276, 1965. 8 F. E. Browder, “Nonexpansive nonlinear operators in a Banach s pace,” Proce...

Ngày tải lên: 21/06/2014, 20:20

... state some condition and many lemmas which we need in the proof of the main theorem. In Section 3, we give the proof of the main result of the paper. 2. Preliminaries Let F  x, t    t 0 f  x, ... problem I α 0  has a solution. This obviously completes the proof of case i and also provides the proof of case ii. By virtue of Lemma 2.5, I β  I ∞ λ−β is continuous for β ∈...

Ngày tải lên: 21/06/2014, 20:20

... Publishing Corporation Journal of Inequalities and Applications Volume 2007, Article ID 10725, 15 pages doi:10.1155/2007/10725 Research Article Stability Problem of Ulam for Euler-Lagrange Quadratic ... Hyers, “On the stability of the linear functional equation,” Proceedings of the National Academy of Sciences, vol. 27, pp. 222–224, 1941. [5] Th. M. Rassias, “On the stability...

Ngày tải lên: 21/06/2014, 22:20

... 2009, Article ID 184618, 16 pages doi:10.1155/2009/184618 Research Article Unsupervised Mo deling of Objects and Their Hierarchical Contextual Interactions Devi Parikh and Tsuhan Chen Department of ... object? The definition of an object is blurry, and the hSO exploits this to allow incorporation of semantic information of the scene layout. The leaves of the hSO are a collect...

Ngày tải lên: 22/06/2014, 00:20