digital audio broadcasting ppt

Ngày tải lên: 23/12/2013, 04:17

Ngày tải lên: 03/07/2014, 23:38

... PHÒNG KHOA CÔNG NGHỆ THÔNG TIN BÁO CÁO MÔN MẠNG MÁY TÍNH ADSL ADSL (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...

Ngày tải lên: 11/12/2013, 18:15

... Electronic Commerce in the Digital Economy Page 13 43 "GDP and the Digital Economy: Keeping Up With the Changes," Brent R. Moulton, paper presented at Understanding the 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 I ELECTRONIC COMMERCE IN THE DIGITAL ECONOMY * “The ... demand and business imperatives, the digital economy is becoming truly global. The United States continues to lead the world in many measures of the utilization of digital technology. However, this...

Ngày tải lên: 21/12/2013, 03:15

... CHAPTER 1 Digital Logic All digital systems are founded on logic design. Logic design transforms algorithms and processes conceived 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, ... sharpen their skills in modern digital system design. Engineers who have spent years outside the design arena or in less-than-cutting-edge areas often find that their digital design skills are behind...

Ngày tải lên: 22/12/2013, 20:18

... Phase Period Finite transition time of real clock signal FIGURE 1.10 Digital clock signal. -Balch.book Page 18 Thursday, May 15, 2003 3:46 PM 24 Digital Fundamentals may begin to change. Again, if the input ... One-trillionth 10 –12 pps -Balch.book Page 24 Thursday, May 15, 2003 3:46 PM 14 Digital Fundamentals The majority of digital components adhere to power-of-two magnitude definitions. However, some ... two or three octal digits were 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...

Ngày tải lên: 22/12/2013, 21:18

... CS. Chapter 1 x Alternative Digital Photography Chapter 11 Digital Pinhole 153 Lesson 11.1—Making Your Own Digital Pinhole Camera 154 Lesson 11.2—Using a Commercial Pinhole Attachment 157 Gallery of Digital Pinhole ... book is to bring back that fun by suggesting digital reproductions of 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. 10 Alternative Digital Photography Figure 1.15 Creating a Channel Mixer layer. Figure 1.16 The Channel Mixer. 8 Alternative Digital Photography Figure 1.11 Picking the...

Ngày tải lên: 22/12/2013, 23:15

... to automobiles—have successfully gained an edge with digital components and production methods supported by digital devices. The drive to digital is apparent in wireless voice and data communications, ... of Distributing Wireless Coverage and Capacity Digital RF Transport Digital RF transport stands for flexibility The relative noise immunity of digital RF transport systems delivers wider dynamic ... not spur limited signals. The Advantage of Digital RF Transport Page 7 The Advantage of Digital RF Transport Page 3 Unlike analog RF transport systems, digital RF transport solutions involve digitization...

Ngày tải lên: 17/01/2014, 11:20

... On the other hand, digital signals have discrete values in both time and amplitude. In this book, we design and implement digital systems for processing digital signals using digital hardware. ... term `discrete-time' and `digital& apos; inter- changeably. Digital signal processing (DSP) is concerned with the digital representation of signals and the use of digital hardware to analyze, ... REAL-TIME DIGITAL SIGNAL PROCESSING 1 Introduction to Real-Time Digital Signal Processing Signals can be divided into three categories ± continuous-time (analog) signals, discrete-time signals, and digital...

Ngày tải lên: 18/01/2014, 20:20

... 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, New York, ... sudden bump in the number of times Spread Spectrum (SS) techniques were mentioned in the amateur digital areas. While QEX has discussed SS in the past, we haven't touched on it in this forum. ... computer science at the Naval Postgraduate School in Monterey, California. His areas of interest are digital communications, amateur satellites, VHF/UHF contesting, and QRP. His research area closely...

Ngày tải lên: 21/01/2014, 04:20

... ISO/MPEG -audio codec: A generic standard for coding of high 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 ... will use the MPEG-2 /Audio algorithm. 40.7 Conclusions Lowbitratedigitalaudioisappliedinmanydifferentfields,suchasconsumerelectronics,professional audioprocessing,telecommunications,andbroadcasting. ... MPEG-2 /Audio Multichannel Coding A 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...

Ngày tải lên: 22/01/2014, 12:20

... G.A. Digital Audio Coding: Dolby AC-3” Digital Signal Processing Handbook Ed. Vijay K. Madisetti and Douglas B. Williams Boca Raton: CRC Press LLC, 1999 c  1999byCRCPressLLC TABLE41.2 AC-3 Audio ... of the six Audio Blocks depending on audio signal bit demand. This feature is particularly useful when the audio signal is non-stationary over the 1536-sample synchronization frame. Audio Blocks ... in a perceptual audio coder, presented at the 97th Convention of the Audio Engineering Society, Preprint 3921, November 1994. [9] Schroeder, M., Atal, B. and Hall, J., Optimizing digital speech...

Ngày tải lên: 22/01/2014, 12:20

... 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...

Ngày tải lên: 24/01/2014, 00:20

... ideas and new methods are endless. The concepts of digital library, digital valley, digital home, digital enterprise, digital economy and even digital earth’, which is the common framework used ... the Digital Manufacturing Process and System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320 8.3.1 Digital Management in Digital Manufacturing . . . . . . . . 321 8.3.2 The Digital ... and market competi- tion environment. The characteristics of digital equipment embody the digitali- zation of movement, including the digital modeling of the driving process, motion planning under...

Ngày tải lên: 21/02/2014, 22:20

Ngày tải lên: 23/02/2014, 11:20

... in the political process in a different way. Television is MEDIA OWNERSHIP and DEMOCRACY in the DIGITAL INFORMATION AGE Promoting Diversity with First Amendment Principles and Market Structure ... AMENDMENT 4 TV, in particular, is the primary vehicle for political advertising. At the same time, digital media are at the center of the information economy and the emerging multimedia environment ... citizens, consumers and the nation are huge – no less than the viability of democratic discourse in the digital information age. Some of the limitations on ownership were reviewed because the Appeals...

Ngày tải lên: 05/03/2014, 22:20

... contains specific information for the dsPIC30F3014/4013 Digital Signal Controller (DSC) devices. The dsPIC30F3014/4013 devices contain extensive Digital Signal Processor (DSP) functionality within ... Module 103 17.0 CAN Module 111 18.0 Data Converter Interface (DCI) Module 121 19.0 12-bit Analog-to -Digital Converter (ADC) Module 131 20.0 System Integration 141 21.0 Instruction Set Summary 159 22.0...

Ngày tải lên: 06/03/2014, 22:20

Ngày tải lên: 11/03/2014, 19:20

Ngày tải lên: 14/03/2014, 13:20

Ngày tải lên: 16/03/2014, 11:20