... PHÒNGKHOA CÔNG NGHỆ THÔNG TINBÁO CÁO MÔN MẠNG MÁY TÍNH ADSLADSL (Asymmetric Digital Subscriber Line )(Asymmetric Digital Subscriber Line )Giáo viên hướng dẫn : Đỗ Xuân Toàn Nhóm sinh viên ... trên Internet một cách nhanh hơn. 4 ADSL có nghĩa như thế nào?ADSL viết tắt của Asymmetric Digital Subscriber Line - đó là đường thuê bao số không đối xứng, kỹ thuật truyền được sử dụng ... tới thuê bao) có thể nhanh gấp hơn 10 lần so với tốc độ của chiều lên (từ thuê bao tới mạng). Digital: Các Modem ADSL hoạt động ở mức bít (0 & 1) và dùng để chuyển thông tin số hoá giữa...
... Electronic Commerce in the Digital Economy Page 1343"GDP and the Digital Economy: Keeping Up With the Changes," Brent R. Moulton, paper presented at Understandingthe Digital Economy Conference, ... Commerce in the Digital Economy Page 1*This chapter was written by Patricia Buckley, senior policy advisor in the Office of Policy Development.CHAPTER IELECTRONIC COMMERCE IN THE DIGITAL ECONOMY*“The ... demand and business imperatives, the digital economy is becoming truly global. TheUnited States continues to lead the world in many measures of the utilization of digital technology.However, this...
... expres-sions are written by using the graphical representations shown in Table 1.4. Note that each operationhas multiple symbolic representations. The choice of representation is a matter of style when ... CHAPTER 1 Digital Logic All digital systems are founded on logic design. Logic design transforms algorithms and processesconceived by people into computing machines. A grasp of digital logic ... ex-plained previously in designing hybrid analog /digital circuits to support a larger digital system.-Balch.book Page xvi Thursday, May 15, 2003 3:46 PM 8 Digital Fundamentals Augustus DeMorgan,...
... PhasePeriodFinite transition time ofreal clock signalFIGURE 1.10 Digital clock signal.-Balch.book Page 18 Thursday, May 15, 2003 3:46 PM24 Digital Fundamentalsmay begin to change. Again, if the input ... One-trillionth10–12pps-Balch.book Page 24 Thursday, May 15, 2003 3:46 PM14 Digital FundamentalsThe majority of digital components adhere to power-of-two magnitude definitions. However,some ... two or three octal digitswere common in earlier times.Because of the inherent binary nature of digital systems, quantities are most often expressed in or-ders of magnitude that are tied to binary...
... CS.Chapter1xAlternative Digital PhotographyChapter 11 Digital Pinhole 153Lesson 11.1—Making Your Own Digital Pinhole Camera 154Lesson 11.2—Using a Commercial Pinhole Attachment 157Gallery of Digital Pinhole ... book is to bring back that fun by suggesting digital reproductionsof the old techniques such as digital pinhole cameras, digital toy cameras, and digital infrared. It also suggests some new ideas ... it looks like in advance.10Alternative Digital PhotographyFigure 1.15 Creating a ChannelMixer layer.Figure 1.16 The Channel Mixer.8Alternative Digital PhotographyFigure 1.11 Picking the...
... 1986.R.E. Ziemer and R.L. Peterson, Digital Communications and Spread Spectrum Systems,New York, Macmillan, 1985.R.E. Ziemer and R.L. Peterson,Introduction to Digital Communications, NewYork, ... sudden bump in the number of timesSpread Spectrum (SS) techniques were mentionedin the amateur digital areas. While QEX hasdiscussed SS in the past, we haven't touched on itin this forum. ... computer science at the Naval PostgraduateSchool in Monterey, California. His areas ofinterest are digital communications, amateursatellites, VHF/UHF contesting, and QRP. Hisresearch area closely...
... MPEG-2 /Audio Multichannel CodingA logical further step in digitalaudio is the definition of a multichannel audio representation sys-tem to create a convincing, lifelike soundfield both for audio- only ... willuse the MPEG-2 /Audio algorithm.40.7 ConclusionsLowbitratedigitalaudioisappliedinmanydifferentfields,suchasconsumerelectronics,professionalaudioprocessing,telecommunications,andbroadcasting. ... stereo presentation will lead tonewproposals. Digital multichannel audio improves stereophonic images and will be of importance both for audio- only and multimedia applications. MPEG-2 /audio offers...
... a frequency domain representation of the audio signal. A block diagram of thisprocessis showninFig.41.2. Thefirststepintheencoding processistotransform therepresentationofaudiofromasequenceofPCMsignalsampleblocksintoasequenceoffrequencycoefficientblocks.Thisisdonein ... G.A. DigitalAudio Coding: Dolby AC-3” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas B. WilliamsBoca Raton: CRC Press LLC, 1999c1999byCRCPressLLCTABLE41.2 AC-3 Audio ... of 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...
... 4.1.4 Digital Content Protection LLC Digital Content Protection LLC is an organization created to license High-bandwidth Digital Content Protection (HDCP), a scheme for protecting video on Digital ... Digital Rights Management (DRM). DRM has attempted to address the issue of licensing and controlling distribution of digital content. In general, all DRM systems allow the distribution of digital ... in digital form. Virtually any information that can be represented by words, numbers, graphics, audio information, or a system of commands and instructions can be formatted into electronic digital...
... contains specific information for thedsPIC30F3014/4013 Digital Signal Controller (DSC)devices. The dsPIC30F3014/4013 devices containextensive Digital Signal Processor (DSP) functionalitywithin ... Module 10317.0 CAN Module 11118.0 Data Converter Interface (DCI) Module 12119.0 12-bit Analog-to -Digital Converter (ADC) Module 13120.0 System Integration 14121.0 Instruction Set Summary 15922.0...
... 207B Online Resources for Digital Photographers . . . . . . . 219Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223vDigPhoto / Shoot Like a Pro! Digital Photography/ King/ ... ways to get pro-quality results with your digital camera. Among other things, you’ll find out how to•Take better advantage of all the options on your digital camera—from resolutionto ISO to ... virtual reality images.•Manipulate colors using traditional and digital filters.xviShoot Like a Pro!DigPhoto / Shoot Like a Pro! Digital Photography/ King/ 2949-7 /P:\010Comp\VirClass\949-7\fm.vpThursday,...
... DAFX (Digital Audio Effects) ScientificCommittee. His interests are centered in audio signal representations, sound synthesis by physicalmodels, digitalaudio effects, spatial audio, audio coding, ... INTRODUCTIONInputsignalDAFXOutputsignalControlparametersAcousticaland visualrepresentationAcousticaland visualrepresentationFigure 1.1 Digitalaudio effect and its control [Arf99].The physical and acoustical phenomena of digitalaudio effects will ... Fundamentals of digital signal processingThe fundamentals of digital signal processing consist of the description of digital signals –inthecontext of this book we use digitalaudio signals –...
... Chuyển đổi và kiểm tra lỗi các tập tin audio với Helium Audio Converter Helium Audio Converter là công cụ miễn phí, hỗ trợ người dùng chuyển đổi qua lại ... Options tương ứng với mỗi định dạng âm thanh xuất ra để thay đổi các tham số nén âm thanh. Helium Audio Converter tương thích mọi Windows, bạn tải về sử dụng miễn phí tại đây. ...
... discretizing matter.1 Digital systemsuse the digital abstraction, which is based on discretizing signal values. Clocked digital systems are based on discretizing both signals and time, and digital systolic ... often used as an abstract representation or a model of a piece of mate-rial with complicated internal behavior. Similarly, a circuit often serves as anabstract representation of interrelated ... abstractionthat simplifies the building of bigger analog systems. The logic gate, the digital memory, the digital finite-state machine, and the microprocessor are themselvesa succession of abstractions...