Anywhere-Anytime Signals and Systems Laboratory From MATLAB to Smartphones Synthesis Lectures on Signal Processing Editor JoséMoura,CarnegieMellonUniversity SynthesisLecturesinSignalProcessingpublishes80-to150-pagebooksontopicsofinterestto signalprocessingengineersandresearchers.eLecturesexploitindetailafocusedtopic.eycan beatdifferentlevelsofexposition-fromabasicintroductorytutorialtoanadvanced monograph-dependingonthesubjectandthegoalsoftheauthor.Overtime,theLectureswill provideacomprehensivetreatmentofsignalprocessing.Becauseofitsformat,theLectureswillalso providecurrentcoverageofsignalprocessing,andexistingLectureswillbeupdatedbyauthorswhen justified. LecturesinSignalProcessingareopentoallrelevantareasinsignalprocessing.eywillcover theoryandtheoreticalmethods,algorithms,performanceanalysis,andapplications.SomeLectures willprovideanewlookatawellestablishedareaorproblem,whileotherswillventureintoabrand newtopicinsignalprocessing.Bycarefulreviewingthemanuscriptswewillstriveforqualitybothin theLectures’contentsandexposition. Anywhere-AnytimeSignalsandSystemsLaboratory:FromMATLABtoSmartphones NasserKehtarnavazandFatemehSaki 2016 Smartphone-BasedReal-TimeDigitalSignalProcessing NasserKehtarnavaz,ShaneParris,andAbhishekSehgal 2015 AnIntroductiontoKalmanFilteringwithMATLABExamples NarayanKovvali,MaheshBanavar,andAndreasSpanias 2013 SequentialMonteCarloMethodsforNonlinearDiscrete-TimeFiltering MarceloG.S.Bruno 2013 ProcessingofSeismicReflectionDataUsingMATLAB™ WailA.MousaandAbdullatifA.Al-Shuhail 2011 iii Fixed-PointSignalProcessing WayneT.PadgettandDavidV.Anderson 2009 AdvancedRadarDetectionSchemesUnderMismatchedSignalModels FrancescoBandiera,DaniloOrlando,andGiuseppeRicci 2009 DSPforMATLAB™andLabVIEW™IV:LMSAdaptiveFiltering ForesterW.Isen 2009 DSPforMATLAB™andLabVIEW™III:DigitalFilterDesign ForesterW.Isen 2008 DSPforMATLAB™andLabVIEW™II:DiscreteFrequencyTransforms ForesterW.Isen 2008 DSPforMATLAB™andLabVIEW™I:FundamentalsofDiscreteSignalProcessing ForesterW.Isen 2008 eeoryofLinearPrediction P.P.Vaidyanathan 2007 NonlinearSourceSeparation LuisB.Almeida 2006 SpectralAnalysisofSignals:eMissingDataCase YanweiWang,JianLi,andPetreStoica 2006 Copyright©2017byMorgan&Claypool Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedin anyformorbyanymeans—electronic,mechanical,photocopy,recording,oranyotherexceptforbriefquotations inprintedreviews,withoutthepriorpermissionofthepublisher. Anywhere-AnytimeSignalsandSystemsLaboratory:FromMATLABtoSmartphones NasserKehtarnavazandFatemehSaki www.morganclaypool.com ISBN:9781627059015 paperback ISBN:9781627055031 ebook DOI10.2200/S00727ED1V01Y201608SPR014 APublicationintheMorgan&ClaypoolPublishersseries SYNTHESISLECTURESONSIGNALPROCESSING Lecture#14 SeriesEditor:JoséMoura,CarnegieMellonUniversity SeriesISSN Print1932-1236 Electronic1932-1694 Anywhere-Anytime Signals and Systems Laboratory From MATLAB to Smartphones Nasser Kehtarnavaz and Fatemeh Saki UniversityofTexasatDallas SYNTHESISLECTURESONSIGNALPROCESSING#14 M &C Morgan &cLaypool publishers ABSTRACT A typical undergraduate electrical engineering curriculum incorporates a signals and systems course.ewidelyusedapproachforthelaboratorycomponentofsuchcoursesinvolvestheuti- lization of MATLAB to implement signals and systems concepts. is book presents a newly developedlaboratoryparadigmwhereMATLABcodesaremadetorunonsmartphones,which most students already possess. is smartphone-based approach enables an anywhere-anytime platform for students to conduct signals and systems experiments. is book covers the labo- ratory experiments that are normally covered in signals and systems courses and discusses how to run MATLAB codes for these experiments on smartphones, thus enabling a truly mobile laboratory environment for students to learn the implementation aspects of signals and sys- tems concepts. A zipped file of the codes discussed in the book can be acquired via the website http://sites.fastspring.com/bookcodes/product/SignalsSystemsBookcodes. KEYWORDS smartphone-based signals and systems laboratory; anywhere-anytime platform for signalsandsystemcourses;fromMATLABtosmartphones vii Contents Preface ............................................................xi 1 IntroductiontoMATLAB ............................................ 1 1.1 StartingMATLAB ................................................1 1.1.1 ArithmeticOperations ........................................1 1.1.2 VectorOperations ............................................5 1.1.3 ComplexNumbers ...........................................6 1.1.4 ArrayIndexing ..............................................7 1.1.5 AllocatingMemory...........................................8 1.1.6 SpecialCharactersandFunctions................................9 1.1.7 ControlFlow...............................................10 1.1.8 ProgramminginMATLAB ...................................12 1.1.9 SoundGeneration...........................................13 1.1.10LoadingandSavingData .....................................14 1.1.11ReadingWaveandImageFiles.................................14 1.1.12SignalDisplay ..............................................15 1.2 MATLABProgrammingExamples ..................................15 1.2.1 SignalGeneration ...........................................15 1.2.2 GeneratingaPeriodicSignal ..................................17 1.3 LabExercises ....................................................18 2 AndroidSoftwareDevelopmentTools ................................. 21 2.1 InstallationSteps .................................................21 2.1.1 JavaJDK ..................................................21 2.1.2 AndroidStudioBundleandNativeDevelopmentKit...............22 2.1.3 EnvironmentVariableConfiguration ............................23 2.1.4 AndroidStudioConfiguration .................................24 2.1.5 AndroidEmulatorConfiguration...............................27 2.2 GettingFamiliarwithAndroidSoftwareTools..........................31 viii 3 FromMATLABCodertoSmartphone ................................ 43 3.1 MATLABFunctionDesign ........................................43 3.2 GeneratingSignalsviaMATLABonSmartphones ......................45 3.2.1 TestBench.................................................46 3.2.2 CCodeGeneration..........................................46 3.2.3 SourceCodeIntegration......................................48 3.3 RunningMATLABCoderCCodesonSmartphones....................52 3.4 References.......................................................56 4 LinearTime-InvariantSystemsandConvolution ........................ 57 4.1 ConvolutionandItsNumericalApproximation .........................57 4.2 ConvolutionProperties ............................................59 4.3 ConvolutionExperiments ..........................................59 4.4 LabExercises ....................................................89 4.4.1 EchoCancellation...........................................89 4.4.2 NoiseReductionUsingMeanFiltering ..........................90 4.4.3 ImpulseNoiseReductionUsingMedianFiltering..................91 4.5 RunningMATLABCoderCCodesonSmartphone ....................91 4.6 RunninginReal-TimeonSmartphones ...............................95 4.6.1 MATLABFunctionDesign...................................95 4.6.2 TestBench.................................................95 4.6.3 ModifyingaRealTimeShell ..................................99 4.7 References......................................................105 5 FourierSeries .................................................... 107 5.1 FourierSeriesNumericalComputation...............................108 5.2 FourierSeriesandItsApplications ..................................109 5.3 LabExercises ...................................................123 5.3.1 RLCircuitAnalysis ........................................123 5.3.2 eDopplerEffect .........................................124 5.3.3 SynthesisofElectronicMusic.................................124 5.4 References......................................................127 6 Continuous-TimeFourierTransform................................. 129 6.1 CTFTandItsProperties ..........................................129 6.2 NumericalApproximationsofCTFT ................................130 ix 6.3 EvaluatingPropertiesofCTFT.....................................130 6.4 LabExercises ...................................................159 6.4.1 CircuitAnalysis............................................159 6.4.2 MorseCoding .............................................159 6.4.3 eDopplerEffect .........................................160 6.4.4 DiffractionofLight ........................................162 6.5 References......................................................163 7 DigitalSignalsandeirTransforms ................................. 165 7.1 DigitalSignals ..................................................165 7.1.1 SamplingandAliasing ......................................165 7.1.2 Quantization ..............................................169 7.1.3 A/DandD/AConversions...................................169 7.1.4 DTFTandDFT...........................................173 7.2 Analog-to-DigitalConversion,DTFT,andDFT ......................174 7.3 LabExercises ...................................................193 7.3.1 Dithering.................................................193 7.3.2 ImageProcessing...........................................193 7.3.3 DTMFDecoder ...........................................193 7.4 References......................................................194 Authors’Biographies .............................................. 195 Index ........................................................... 197