requirement of frequency domain analysis in multimedia

... 120 FREQUENCY- DOMAIN ANALYSIS There is some ambiguity in the published literature regarding the definition of what is called the Nyquist frequency. Most of the books define half the sampling frequency ... sampling frequency of 0.8π , instead of the original frequency of 2π . If the sampling frequency in this example is 10,000 Hz, then the Nyquist fre- quency is 5000 Hz, and therefore the input signal ... between 1500 and 2000 Hz. Since the maximum frequency in the output signal is 2000 Hz, one might think of reconstructing the continuous-time signal using a sampling frequency of 4000 Hz. But this is...

Ngày tải lên: 29/09/2013, 21:20

... accompanying text, and typically hinges on a host of machine-learning methodolo- gies to handle the inherent variability and complexity of the ensuing features. The computational efficiency of the ... use of a broader spectrum of multimedia information, comple- menting video with audio or text information as well as other types of sensor signals, whenever available. The first group of papers in ... original work is properly cited. Many important applications in multimedia revolve around the detection of humans and the interpretation of their be- havior. These include surveillance and intrusion...

Ngày tải lên: 22/06/2014, 19:20

... Morosi was born in Firenze, Italy, in 1968. He received the Dr. Ing. degree in electronics engineering in 1996 and the Ph.D. degree in informat ion and telecom- munication engineering in 2000 from ... corresponding time domain processing. In this paper, an original frequency domain detector (FDD) for UWB impulse radio (UWB-IR) short-range down- link communications will be proposed and simulated in ... have to be taken into account. Frequency domain equalization (FDE) [8], proposed and studied for a single-carrier single-user environment, is sim- ply the frequency domain analog of conventional...

Ngày tải lên: 22/06/2014, 22:20

... benefit, since CPs add overhead and reduce the spectral efficiency. Furthermore, in the FSE case, frequency- domain filtering with a filter bank is quite effective in suppressing strong interfering spectral ... filter banks (FBs) for frequency- domain equalization (FDE) in single-carrier systems. The key aspect is mildly frequency- selective subband processing instead of a simple complex gain factor per subband. ... is absent since it can be realized together with the equalizer in the frequency domain [1]. In the case of SSE, the folding is carried out before equal- ization, where the folding frequency is...

Ngày tải lên: 22/06/2014, 23:20

... 15000-17000  Fig.8. Frequency distribution of chlorineions(Cl - ) in dryseason of Holoceneaquifer. Accordingly, probability distribution of chlorineions in dryseason of Holoceneaquifer is ... characterized by a fine grain size and coarsegrainsize[4,5].Finesedimentscompos ed mainly of sand in thelowerpartandweathered clay in  the upper part of VinhPhuc Formation (Q 1 3 vp). ... In this paper, by processing 760 analysis results of groundwater samples issued by Department of GeologyandMinerals of Vietnam, andbyusing frequency analysis techniques,the authors...

Ngày tải lên: 22/03/2014, 12:20

... spectral continuity of the mixing (and therefore of the unmixing) fi lters is used in the initialization of the joint di- agonalization algorithm. The exploitation of the continuity of the unmixing filters ... Makino, “Es- timating the number of s ources for frequency- domain blind source separation,” in Proceedings of the 5th International Con- ference on Independent Component Analysis and Blind Signal Separation ... Processing, vol. 8, no. 3, pp. 320–327, 2000. [2] P. Smaragdis, “Blind separation of convolved mixtures in the frequency domain, ” in Proceedings of the International ICSC Workshop on Independence...

Ngày tải lên: 22/06/2014, 23:20

... Compensation of Delay in the Discrete Frequency Domain 2049 Theoretical frequency domain SNR Experimental time domain SNR Experimental frequency domain SNR 0 5 101520253035 Ratioofnumberofbinstodelay 0 5 10 15 20 25 30 35 SNR ... and 1 That is, the number of bins in the frequency domain implementation is equal to the number of time domain taps. On the Compensation of Delay in the Discrete Frequency Domain 2051 of perfect delay ... ability of a DFT filterbank frequency domain filter to effect time domain delay is examined. This is achieved by comparing the quality of equalisation using a DFT filterbank frequency domain filter...

Ngày tải lên: 23/06/2014, 01:20

... many proteins involved in apoptosis, including the expression profiles of proteins involved in the mito- chondrial (bcl-2, bax, and bcl-x, etc.) and stress reac- tion-related pathways of apoptosis ... identify key molecules in the course of hy- poxia-induced apoptotic pathways. Such analysis of trophoblastic cells will, in the near future, yield in- sights into the mechanisms of preeclampsia and ... trend of protein changes for the experimental sample to control detected by using the Odyssey Infrared Imaging System. (+) means an increase of signal intensity, and (-) means a decrease of signal...

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Ngày tải lên: 05/09/2013, 14:59

... - Ministry of Mining and Energy of Republic of Serbia. Strategy of development of energy industry of Republic of Serbia until 2015, draft report, 2005. [6] EPS – Electric Power Industry of ... International Business and Cooperation, 2009. [17] Ministry of Energy and Mining. Renewable Energy in Serbia. Ministry of Energy and Mining, 2009. [18] Statistical Office of the Republic of Serbia. ... aiming in the reform and stabilization in all sectors, also including the energy sector. Within this framework, in 2004 the country adopted the Energy Law, while in 2005, the Ministry of Mining...

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Ngày tải lên: 26/11/2013, 13:31

... turn-taking and speaking time distribution. In the following, the construct of turn-taking behaviors is reviewed. Turn-taking is the ordering of moves that involve any organized interplay of speech acts. A ... duration) in small-group decision-making meetings. The findings of the current study add value to a very extensive literature on cross-cultural communication in examining whether and how individuals communicate ... of turn taking and speaking time in group decision- making meetings. As for Research Question 3, it first examines the impact of cultures on the distribution of turn-takings and speaking time....

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