discrete fourier series properties ppt

Ngày tải lên: 24/12/2013, 12:16

Ngày tải lên: 22/06/2014, 23:20

... decomposed. Chapter 8- The Discrete Fourier Transform 145 Type of Transform Example Signal Fourier Transform Fourier Series Discrete Time Fourier Transform Discrete Fourier Transform signals that ... from negative to positive infinity. This class of Fourier Transform is sometimes called the Discrete Fourier Series, but is most often called the Discrete Fourier Transform. You might be thinking that ... Fourier decomposition, the heart of the DFT. The Family of Fourier Transform Fourier analysis is named after Jean Baptiste Joseph Fourier (1768-1830), a French mathematician and physicist. (Fourier...

Ngày tải lên: 13/09/2012, 09:49

... frequency domain multiplexing. The Discrete Time Fourier Transform The Discrete Time Fourier Transform (DTFT) is the member of the Fourier transform family that operates on aperiodic, discrete signals. The ... linear, that is, it possesses the properties of homogeneity and additivity. This is true for all four members of the Fourier transform family (Fourier transform, Fourier Series, DFT, and DTFT). Figure ... are called properties of the Fourier Transform, how a mathematical change in one domain results in a mathematical change in the other domain. Linearity of the Fourier Transform The Fourier Transform...

Ngày tải lên: 13/09/2012, 09:49

... waw w j++ t e a- 22 2 wa a + )2/( 22 s t e - 2/ 22 2 ws ps - e t etu a- )( wa j + 1 t tetu a- )( 2 )( 1 wa j + Ø Trigonometric Fourier Series () å ¥ = ++= 1 000 )sin()cos()( n nn ntbntaatf ww where ò òò = == T n T T n dtnttf T b dtnttf T adttf T a 0 0 0 0 0 0 )sin()( 2 ... Series () å ¥ = ++= 1 000 )sin()cos()( n nn ntbntaatf ww where ò òò = == T n T T n dtnttf T b dtnttf T adttf T a 0 0 0 0 0 0 )sin()( 2 and, )cos()( 2 , )( 1 w w Ø Complex Exponential Fourier Series ò å - ¥ -¥= == T ntj n n ntj n dtetf T FeFtf 0 0 )( 1 where, )( w w Signals & Systems...

Ngày tải lên: 13/12/2013, 12:15

... Refreshing a DataSet Automatically Using Extended Properties Problem You need to automatically refresh a DataSet periodically. Solution Use extended properties and a timer. The sample code contains ... (Convert.ToDateTime(dtRefresh.ExtendedProperties ["RefreshTime"].ToString( )) < now) { // Refresh the table. daRefresh.Fill(dtRefresh); // Update the next refresh time. dtRefresh.ExtendedProperties["RefreshTime"] ... refreshDataGrid.DataSource = dtRefresh.DefaultView; // Set the refresh time for the data. dtRefresh.ExtendedProperties["RefreshTime"] = DateTime.Now.AddSeconds(DATAREFRESH_SECONDS).ToString( );...

Ngày tải lên: 14/12/2013, 18:16

... form's caption. Use properties 1. Start Visual Studio 2005. 2. Open the Properties project, located in the \Microsoft Press\Visual CSharp Step by Step\Chapter 14 \Properties folder in your ... the TextBox.Text properties always displays the current size of the form. 9. Close the form. 10. Display Form1 in the Designer View window. 11. Click Properties to display the properties of ... can modify many of these properties at runtime by using the same syntax you have seen throughout this chapter. In the following exercise, you will use some predefined properties of the TextBox...

Ngày tải lên: 15/12/2013, 00:15

... mm 3 mm 4 mm 3 m 2 v TABLE OF CONTENTS PAGE Dimensions and Section Properties of Rectangular HSS 6 Dimensions and Section Properties of Square HSS 14 Dimensions and Section Properties of Round HSS 19 NOMENCLATURE b Nominal ... 10 3 Meter Inches Millimeters kg kN mm mm 2 mm 4 mm 3 mm mm 3 mm 4 mm 3 m 2 22 Metric Dimensions and Section Properties of Round HSS 5.563 x 0.375 141.3 x 9.5 30.9 0.303 8.9 15.9 3700 8.15 115 46.9 156 16300 ... 1330 1.78 35.1 36.7 43.6 0.855 26.9 25.4 31.5 1740 50.2 0.32 Y Y XX Metric Dimensions and Section Properties of Rectangular HSS 12 Design Torsional Torsional Surface Nominal Size Mass Weight Wall...

Ngày tải lên: 22/12/2013, 16:15

... SQL Server. Red Hat Enterprise Linux, version 3, and Oracle 10G running on a quad- CPU, 96GB, HP Itanium rx -series server delivered world-record performance, beating Windows 2003 with SQLserver and HP/UX (running ... documentation. Migrating to Red Hat Enterprise Linux from Red Hat Linux Benefits and Guidelines 8 Expert Reference Series www.globalknowledge.com 1-800-COURSES Written and Provided by Application Availability Independent...

Ngày tải lên: 17/01/2014, 06:20

... Hat Enterprise Linux v.3 supported architectures Platform X86 Itanium 2 AMD64 IBM zSeries IBM iSeries IBM pSeries Red Hat Enterprise Linux AS 3 Yes Yes Yes Yes Yes Yes Red Hat Enterprise Linux ES ... Itanium2 chip sets. Red Hat Linux to Red Hat Enterprise Linux Migration Overview 15 Expert Reference Series www.globalknowledge.com 1-800-COURSES Written and Provided by and has been expanded to support ... many years, and after 33 revisions, is discontinued as a managed release. The last product in this series, Red Hat Linux 9, will no longer be maintained by Red Hat after April 31, 2004. Red Hat Global...

Ngày tải lên: 17/01/2014, 06:20

Ngày tải lên: 18/01/2014, 05:20

... an unconfigured switch. Instructions are provided for the 2900, 2950, and 1900 Series switches. 2900 and 2950 Series Switches 1. Enter into the privileged EXEC mode by typing enable. If ... Copyright  2003, Cisco Systems, Inc. Lab 6.2.8 Password Recovery Procedure on a Catalyst 2900 Series Switches Objective • Create and verify a basic switch configuration verify it. • Change ... similar to the one in the diagram. The configuration output used in this lab is produced from a 2950 series switch. Any other switch used may produce different output. The following steps are to be...

Ngày tải lên: 24/01/2014, 19:20

... ConvergenceoftheFourierSeries TheFourierseriesrepresentationofaperiodicsignalisanapproximationthatexhibitsmeansquared convergencetothetruesignal.Ifs(t)isaperiodicsignalofperiodT,ands  (t)denotestheFourier seriesapproximationofs(t),thens(t)ands  (t)areequalinthemeansquaresenseif MSE=  T/2 −T/2 |s(t)−s(t)  | 2 dt=0 ... π ∞  k=−∞ [e jφ δ(ω−ω 0 +2πk)+e −jφ δ(ω+ω 0 +2πk)] 1.4.1 PropertiesoftheDiscreteTimeFourierTransform BecausetheDTFTisacloserelativeoftheclassicalCTFouriertransformitshouldcomeasnosurprise thatmanypropertiesoftheDTFTaresimilartothosepresentedfortheCTFouriertransforminthe previoussection.Infact,formanyofthepropertiespresentedearlierananalogouspropertyexists fortheDTFT.ThefollowinglistparallelsthelistthatwaspresentedintheprevioussectionfortheCT Fouriertransform,totheextentthatthesamepropertyexists.AmorecompletelistofDTFTpairsis giveninTable1.4.(Notethattheprimednotationonω  isdroppedinthefollowingtosimplifythe notation,andtobeconsistentwithstandardusage.) 1.Linearity(superposition):DTFT{af 1 [n]+bf 2 [n]}=aDTFT{f 1 [n]}+bDTFT{f 2 [n]} (aandb,complexconstants) 2.Indexshifting:DTFT{f[n−n 0 ]}=e −jωn 0 DTFT{f[n]} 3.Frequencyshifting:e jω 0 n f[n]=DTFT −1 {F(e j(ω−ω 0 ) )} 4.Timedomainconvolution:DTFT{f 1 [n]∗f 2 [n]}=DTFT{f 1 [n]}DTFT{f 2 [n]} 5.Frequencydomainconvolution:DTFT{f 1 [n]f 2 [n]}=(1/2π)DTFT{f 1 [n]}∗DTFT{f 2 [n]} 6.Frequencydifferentiation:nf[n]=DTFT −1 {dF(e jω )/dω} Notethatthetime-differentiationandtime-integrationpropertiesoftheCTFTdonothaveanalogous counterpartsintheDTFTbecausetimedomaindifferentiationandintegrationarenotdefinedforDT c  1999byCRCPressLLC FIGURE1.11:RelationshipsamongDTconcepts. trialanderrorprocedure,thequalityoftheresultdependstosomedegreeontheskillandexperience ofthedesigner.Table1.7listsseveralwell-knownwindowfunctionsthatareoftenusefulforthistype ofFIRfilterdesignprocedure. 1.7.3 ... analogous to the classical Fourier (CT) transform, and the DFT is analogous to the classical (CT) Fourier series. 1.7 Selected Applications of Fourier Methods 1.7.1 Fast Fourier Transform in Spectral...

Ngày tải lên: 27/01/2014, 03:20

... • GAAP SERIES TABLES • B.2 & B.3 | 111 Forecast Statement of Cash Flows (continued) for the year ... 39,902 The accompanying Notes and Accounting policies are an integral part of these Statements. • GAAP SERIES TABLES • B.2 & B.3 | 127 Notes to the Forecast Financial Statements 2003 2003 2002 ... Equipment By Type Gross Carrying Value Land (valuation) 7,443 3,859 6,072 6,219 6,306 6,384 6,451 Properties intended for sale (valuation) 486 442 435 423 414 412 412 Buildings (valuation) 19,014...

Ngày tải lên: 18/02/2014, 01:20

... c 552 from Escherichia coli K12anditspropertiesasa nitrite reductase. Eur. J. Biochem. 154, 457–463. 5. Rehr, B. & Klemme, J.H. (1986) Metabolic role and properties of nitrite reductase of ... (1991) Dissimilatory hexa- heme c nitrite reductase of ÔSpirillumÕ strain 5175: purification and properties. Arch. Microbiol. 156, 70–74. 9. Murillo, M.F., Gugliuzza, T., Senko, J., Basu, P. & ... Sulfurospirillum deleyianum is a tetraheme protein: new aspects of the molecular composition and spectroscopic properties. Biochem. Biophys. Res. Commun. 205 (1), 911–916. 14. Einsle, O., Messerschmidt, A.,...

Ngày tải lên: 21/02/2014, 00:20

Ngày tải lên: 06/03/2014, 17:20

... files) should be addressed to the authors. M. Grey et al. An Hb fusion protein with antioxidative properties FEBS Journal 276 (2009) 6195–6203 ª 2009 The Authors Journal compilation ª 2009 FEBS ... lM SOD–Hb (solid line). Cp, heat capacity. M. Grey et al. An Hb fusion protein with antioxidative properties FEBS Journal 276 (2009) 6195–6203 ª 2009 The Authors Journal compilation ª 2009 FEBS ... serum albumin was determined as described by Benesch [19] and An Hb fusion protein with antioxidative properties M. Grey et al. 6200 FEBS Journal 276 (2009) 6195–6203 ª 2009 The Authors Journal compilation...

Ngày tải lên: 07/03/2014, 00:20

Ngày tải lên: 15/03/2014, 07:20

Ngày tải lên: 16/03/2014, 02:20

Ngày tải lên: 22/03/2014, 14:20