0

digital data analog signal

DIGITAL DATA TRANSMISSION - I

DIGITAL DATA TRANSMISSION - I

Hóa học - Dầu khí

... Digital Signal Source: The signal sources produce a series of “0”s (about –2.5 V) and “1”s (+2.5 V) at the data rate set by the Master Clock. The time period of each bit is T = 1/fs. This signal ... detection process. This signal is useful in accurately measuring errors in detected data due to a communications channel. Figure 5 A (b) Block parameters digital signal source Summer: Page ... signal source produces equally likely 0’s and 1’s. Figure 5 A (d) Block parameters limiter Error Detector: The processed signal is compared with a sample of the signal source. For each data...
  • 14
  • 344
  • 0
Digital Signal Processors

Digital Signal Processors

Kỹ thuật lập trình

... be taken:Chapter 28- Digital Signal Processors 513ProgramMemory Data Memoryinstructions andsecondary data data onlyAddressPM Data GeneratorAddressDM Data Generator Data RegistersMuliplierALUShifterDM ... theChapter 28- Digital Signal Processors 511Memory data andinstructionsProgramMemory Data Memoryinstructions andsecondary data data onlyProgramMemory Data Memoryinstructions only data onlya. ... Harvard Architecture ( )CPUaddress bus data busPM address busPM data busPM address busPM data busDM address busDM data busCPUDM address busDM data bussingle memorydual memorydual...
  • 32
  • 388
  • 0
The Scientist and Engineer's Guide to Digital Signal Processing Second Edition

The Scientist and Engineer's Guide to Digital Signal Processing Second Edition

Kỹ thuật lập trình

... 35The Sampling Theorem 39 Digital- to -Analog Conversion 44 Analog Filters for Data Conversion 48Selecting the Antialias Filter 55Multirate Data Conversion 58Single Bit Data Conversion 60Chapter ... (Transform Compression) 494MPEG 501Chapter 28. Digital Signal Processors 503How DSPs are different 503Circular Buffering 506Architecture of the Digital Signal Processor 509Fixed versus Floating ... Probability and Noise 11 Signal and Graph Terminology 11Mean and Standard Deviation 13 Signal vs. Underlying Process 17The Histogram, Pmf and Pdf 19The Normal Distribution 26 Digital Noise Generation...
  • 14
  • 1,024
  • 0
Introduction to Digital Signal Processing and Filter Design

Introduction to Digital Signal Processing and Filter Design

Kỹ thuật lập trình

... what are the advantages of digital signal processing insteadof analog signal processing, even though digital signal processing requires morecircuits compared to analog signal processing?x(n)y(n)z−1z−1z−1ΣΣΣΣFigure ... can be considered a bandlimited signal. It is this signal thatis sampled and converted to a discrete-time signal and coded to a digital signal by the analog- to -digital converter (ADC) that was ... discrete-time signals aredescribed. A brief history of analog and digital filter design is given. Then theadvantages of digital signal processing over continuous-time (analog) signal pro-cessing...
  • 440
  • 1,018
  • 4
Analog-to-Digital Conversion

Analog-to-Digital Conversion

Kỹ thuật lập trình

... to hear. Theprocess to convert digital signals to analog signals is completed by a DAC. The most commonlyused technique to convert digital signals to analog signals is the summation method ... Quantization. ANALOG- TO -DIGITAL CONVERSION 553.3.2 IntegrationThe integration technique uses an integrator, a comparator, and a controller to convert analog signals to digital signals. A sampled analog signal ... v1/21/41/81/2nAdderQuantized Analog Signal ScalarMultipliersFIGURE 3.11: A summation method to convert a digital signal into a quantized analog signal. Comparators are used to clean up incoming signals, and...
  • 24
  • 387
  • 0
Introduction to Digital Signal Processing and Filter Design - Introduction

Introduction to Digital Signal Processing and Filter Design - Introduction

Kỹ thuật lập trình

... (VLSI) technology. The analog signals were con-verted to sampled data signals by these filters and the signal processing wastreated as analog signal processing. But later, the signals were transitioned ... called the digital signal. Although there is a difference betweenthe discrete-time signal and digital signal, in the next few chapters we assumethat the signals are discrete-time signals and ... output data decrease.For example, data on a few ADCs currently available are given in Table 1.3 [3].Hence digital signal processing is restricted to approximately one megahertz,and analog signal...
  • 31
  • 638
  • 0
Digital Signal Processing

Digital Signal Processing

Tin học văn phòng

... abgetasteten Signal nur die Werte zu den Abtastzei-ten, gibt das Abtasttheorem Auskunft,ob alle Signalinformationen in denabgetasteten Werten enthalten sindoder nicht:Enthält ein Signal nur Signalanteile ... sind lediglich niedrigere Töne66 Digital Signal ProcessingKursteil 2: Abtastenund digitale FiltertechnikNachdem wir in der letzten Folge das Abtasten von Signalen erklärthatten, kommen wir ... Ausgangssignalsanzusehen. Dazu muß man aber ersteinmal die Möglichkeit kennenlernen,Spektren von Signalen zu berechnenund zu betrachten.SPEKTRUMS-ANALYSERWas wäre ein Kurs über digitale...
  • 5
  • 607
  • 1
Digital Signal Processing Handbook P52

Digital Signal Processing Handbook P52

Cơ khí - Chế tạo máy

... methods.52.1.1 Signal ChainWe assume a model where the input signal is properly bandlimited and digitized by an appropriate analog- to -digital converter. All subsequent processing in the encoder will be digital. ... The decoder isalso digital up to the digital- to -analog converter, which is followed by a lowpass reconstruction filter.Under idealized conditions, the interconnection of the signal chain excluding ... encoded/decoded signal and the original signal. Usually, distortion is measured by a single number for a given coder and bit rate. There arenumerous ways of mapping an error signal onto a single...
  • 29
  • 480
  • 0
Digital Signal Processing Handbook P3

Digital Signal Processing Handbook P3

Cơ khí - Chế tạo máy

... func-tions on a fixed-point digital signal processor,IEEE Trans. Industr. Electron.,41, 70–78, Feb.1994.[17] Ebert, P.M., Mazo, J.E. and Taylor, M.G., Overflow oscillations in digital filters,Bell ... ConsiderationsLinear-phaseFIR digital filters can generally be implementedwith acceptablecoefficient quantizationsensitivity using the direct convolution sum method. When implemented in this way on a digital signal ... second-order state-space digital filter structures,IEEE Trans. Circuits Syst. II,39, 90–98,Feb. 1992.[3] Proakis, G.J. and Manolakis, D.J.,Introduction to Digital Signal Processing,NewYork,...
  • 19
  • 601
  • 1
Digital Signal Processing P1

Digital Signal Processing P1

Phần cứng

... Afifth-orderelliptic analoganti-aliasingfilterusedinthetelecommunications industrywith an 8-kHz sampling rate.FIGURE 1.17: Analog pre- and postfilters required at the analog to digital and digital to analog interfaces.forms ... BruceW.BomarIntroduction•NumberRepresentation•Fixed-PointQuantizationErrors•Floating-PointQuan-tizationErrors•RoundoffNoise•LimitCycles•OverflowOscillations•CoefficientQuantizationError•RealizationConsiderationsTHESTUDYOF“SIGNALSANDSYSTEMS”hasformedacornerstoneforthedevelopmentofdigitalsignalprocessingandiscrucialforallofthetopicsdiscussedinthisHandbook.Whilethereaderisassumedtobefamiliarwiththebasicsofsignalsandsystems,asmallportionisreviewedinthischapterwithanemphasisonthetransitionfromcontinuoustimetodiscretetime.Thereaderwishingmorebackgroundmayfindinitanyofthemanyfinetextbooksinthisarea,forexample[1]-[6].Inthechapter“FourierSeries,FourierTransforms,andtheDFT”byW.KennethJenkins,manyimportantFouriertransformconceptsincontinuousanddiscretetimearepresented.ThediscreteFouriertransform(DFT),whichformsthebackboneofmoderndigitalsignalprocessingasitsmostcommonsignalanalysistool,isalsodescribed,togetherwithanintroductiontothefastFouriertransformalgorithms.In“OrdinaryLinearDifferentialandDifferenceEquations”,theauthor,B.P.Lathi,presentsadetailedtutorialofdifferentialanddifferenceequationsandtheirsolutions.Becausetheseequationsarethemostcommonstructuresforbothimplementingandmodellingsystems,thisbackgroundisnecessaryfortheunderstandingofmanyofthelatertopicsinthisHandbook.Ofparticularinterestareanumberofsolvedexamplesthatillustratethesolutionstotheseformulations.c1999byCRCPressLLCFIGURE1.1:CTmodelofasampledCTsignal.FIGURE1.2:DTmodelofasampledCTsignal.1.2.1 ... 1986.[6] Oppenheim, A.V. and Schafer, R.W., Digital Signal Processing, Englewood Cliffs, NJ: Prentice-Hall, 1975.[7] Blahut, R.E.,Fast Algorithms for Digital Signal Processing, Reading, MA: Addison-Wesley,1985.[8]...
  • 40
  • 524
  • 0

Xem thêm