digital audio broadcasting block diagram ppt
Tài liệu Power Supply Block Diagram ppt
... Block Diagram of SwitchBlock Diagram of Switch Mode RegulatorMode RegulatorIt converts an unregulated dc input...
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Tài liệu Digital Signal Processing Handbook P69 ppt
... for the first data block (beginning at time t = 0). Except for the first data block, the EMalgorithm was initialized with the estimate of H obtained with the last adjacent data block. Noticethat ... we are processing blocks of data with time length Tduring which the geometry remains, for all practical purposes, unchanged. Also, the changes ingeometry between adjacent blocks are small. ... of a wireless digital communication system.69.4 MMSE Beamformer for Mobile CommunicationsIn this section, we discuss the implementation of the MMSE beamformer in the context of a digital wireless...
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Tài liệu Digital Signal Processing Handbook P63 ppt
... selection matrices that might be nonzero. The shaded areasillustrate how to choose the appropriate subblocks of the selection matrices for reduced dimensionprocessing, i.e., how to form (B)1and ... 1,and 2.radar tracking scheme described by Zoltowski and Lee [26], the corresponding 2× 3 subblock of theselection matrices 1and 2is shaded in Fig. 63.3 (a).5Notice that the first and ... B = 3 beams in estimating theDOAs of two closely spaced signal arrivals, the corresponding subblocks of the selection matrices 1and 2are shaded in Fig. 63.3 (b).65Here, the first row...
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Tài liệu Digital Signal Processing Handbook P62 ppt
... Pc1999 by CRC Press LLCGonen, E. & Mendel, J.M. “Subspace-Based Direction Finding Methods” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas B. WilliamsBoca Raton: CRC ... in array signal process-ing,Signal Processing,25(2), 147–169, Nov. 1991.[18] Marple, S.L., Digital Spectral Analysis with Applications,Prentice-Hall, Englewood Cliffs, NJ,1987.[19] Mendel,...
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Tài liệu Digital Signal Processing Handbook P18 pptx
... context of thediscussion.18.2 The Adaptive Filtering ProblemFigure 18.1 shows a block diagram in which a sample from a digital input signal x(n) is fed into adevice, called an adaptive filter, that ... small audio loudspeaker in a room is estimated. AGaussian-distributed signal with a flat frequency spectrum over the usable frequency range of theloudspeakeris generated and sent through an audio ... mathematically asy(n) =Ni=1ai(n)y(n − i) +Nj=0bj(n)x(n − j),(18.6)although the block diagram does not explicitly represent this system in such a fashion.1We couldeasily write...
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Tài liệu Digital Signal Processing Handbook P16 pptx
... detection, estimation, filtering,and classification, and in a wide variety of applications such as digital communications, automaticcontrol, radar and sonar, and other engineering disciplines and ... NBsamples so that N = KNB.LetX(i)(ω) denote the discrete Fouriertransform (DFT) of the ith block {x(t + (i − 1)NB), 1 ≤ t ≤ NB} (i = 1, 2,···,K)given byX(i)(ωm) =NB−1l=0x(l ... Bxxx(ωm,ωn) at bifrequency (ωm=2πNBm, ωn=2πNBn) asBxxx(m, n), given by averaging over K blocksBxxx(m, n) =1KKi=11NBX(i)(ωm)X(i)(ωn)X(i)(ωm+ ωn)∗,(16.17)where...
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Tài liệu Sistema de Módulos de Monitoração Digital Interconexão de 75 Ohm pptx
... 3/02 • 100346BP Sistema de Módulos de Monitoração Digital 6www.adc.com • +55-11-3040-0666Sistema de Módulos de Monitoração Digital Configuração de alta densidadeD3C-0016HDVista frontalRecursos• ... lateral3/02 • 100346BP Sistema de Módulos de Monitoração Digital 5www.adc.com • +55-11-3040-0666Sistema de Módulos de Monitoração Digital Configuração padrãoD3C-0024TVista frontalRecursos• ... frontalwww.adc.com • +55-11-3040-06663/02 • 100346BP Sistema de Módulos de Monitoração Digital 2Sistema de Módulos de Monitoração Digital AplicaçãoO sistema DMM é usado principalmente em ambientes de hospedagem...
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Tài liệu Digital Signal Processing Handbook P32 pptx
... Flanagan, J.L., Surendran, A.C., and Jan, E E.,Spatially selective sound capture for speech and audio processing, Speech Commun., 13: 207–222,1993. With kind permission of Elsevier Science - ... stable solution to a system of simultaneous equations.Traditional least squares methods need a block of data to calculate the estimate. Most of thesemethods demand a lot of memory and processing ... traditional methods used to solve Eq. 32.20 are not robust to errors such as round-off errors in digital computers, measurement inaccuracies, and noise corruption. In the least squaressolution...
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Tài liệu Digital Signal Processing Handbook P26 pptx
... (26.15)isevaluatedforthe resulting xj, then it will match exactly the ith measurement. Other variants will use a block ofmeasurements in one iterative step and will update the xjin different ways to ensure...
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Tài liệu Digital Signal Processing Handbook P25 pptx
... Press LLC25.6 Block- Based MethodsA generalization of the Kaczmarz algorithm introduced in the previous section has been suggestedby Eggermont [35] which can be described as a block, iterative ... HTHf(k).(25.63)Another interesting approach that is similar to the generalized block- Kaczmarz algorithm, with the block size L equal to the number of equations M, is the method of alternating ... IEEE,October 1993.c1999 by CRC Press LLCmeasuring system to an impulse at coordinate a.1A block diagram illustrating the general one-dimensional signal degradation system is shown in Fig....
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Tài liệu Digital Signal Processing Handbook P42 ppt
... shows a more detailed block diagram of the monophonic PAC algorithm, and illustratesthe flow of data between the algorithmic blocks. There are five basic parts.FIGURE 42.4: Block diagram of monophonic ... of audio quality [4] PAC was shown to be the best available audio qualitychoice [4] for audiocompression applications concerning 5-channelaudio. This testevaluatedbothbackwardcompatibleaudio ... of standardization is digital audio radio (DAR). Inthe U.S. this may have one of several realizations: a terrestrial broadcast in the existing FM band,with the digital audio available as an...
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Tài liệu Digital Signal Processing Handbook P41 ppt
... the six Audio Blocksdepending on audio signal bit demand. This feature is particularly useful when the audio signal isnon-stationary over the 1536-sample synchronization frame. Audio Blocks ... inaudible. Digital audio compressionisusefulwhereverthereisaneconomicbenefitrealizedbyreducingthebit-rate. Typical applications are in satellite or terrestrial audio broadcasting, delivery of audio ... parties, including the broadcasting and computer industries.The audio technology used in the ATSC digital audio compression standard [1] is Dolby AC-3.Dolby AC-3 is an audio compression technology...
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Tài liệu Digital Signal Processing Handbook P40 pptx
... MPEG-2 /Audio Multichannel CodingA logical further step in digital audio is the definition of a multichannel audio representation sys-tem to create a convincing, lifelike soundfield both for audio- only ... ISO/MPEG -audio codec: A generic standard for coding ofhigh quality digital audio, J. Audio Eng. Soc. (AES), 42(10), 780–792, Oct. 1994.[31] van de Kerkhof, L.M. and Cugnini, A.G., The ISO/MPEG audio ... LLCMPEGDigitalAudioCodingStandardsPeterNollTechnicalUniversityofBerlin40.1Introduction40.2KeyTechnologiesinAudioCodingAuditoryMaskingandPerceptualCoding•FrequencyDomainCoding•WindowSwitching•DynamicBitAllocation40.3MPEG-1/AudioCodingTheBasics•LayersIandII•LayerIII•FrameandMultiplexStructure•SubjectiveQuality40.4MPEG-2/AudioMultichannelCodingMPEG-2/AudioMultichannelCoding•Backward-Compat-ible(BC)MPEG-2/AudioCoding•Advanced/MPEG-2 /Audio Coding(AAC)•SimulcastTransmission•SubjectiveTests40.5MPEG-4/AudioCoding40.6Applications40.7ConclusionsReferences40.1...
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Tài liệu Digital Signal Processing Handbook P39 ppt
... Coding Applications” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas B. WilliamsBoca Raton: CRC Press LLC, 1999c1999byCRCPressLLC[19] Johnston, J.D., Audio coding with ... ConclusionsNotwithstanding the successes obtained to date with perceptualcodersfor speech and audio [16, 19,27,36],thereisstillagreatdealofroomforfurtheradvancement. Themostwidelyappliedperceptualmodelstodayapplyanenergy-based ... Moore,B.C.J.andGlasberg,B.R.,Suggestedformulaeforcalculatingauditory-filterbandwidthsand excitation patterns,J. Acoust. Soc. Am., 74: 750-757, 1983b.[27] Noll, P., MPEG /Audio coding standards.[28] Reynolds, G.S. and Stevens, S.S., Binaural summation of loudness,J....
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