By Graham A. Jones
Very important Updates! This 3rd version has been reorganized and up to date all through. It encompasses new criteria and identifies and explains rising electronic applied sciences presently revolutionizing the undefined. Additions contain: ."Broadcast fundamentals" - first ideas when you quite are ranging from scratch .ATSC PSIP (Program and approach info Protocol) and knowledge Broadcasting .More details on ATSC electronic tv criteria and implementation .Current television studio operations - HD and SD platforms, video servers, non-linear modifying, digital information rooms, closed captioning, and compressed bitstreams .Station and community preparations, centralcasting, and multicasting .IBOC electronic HD radio and techniques for implementation .Current radio studio operations - electronic audio workstations, application automation, and voice monitoring .and even more! * study from specialist Graham Jones of the nationwide organization of Broadcasters--the such a lot depended on identify in broadcast * Covers tv and radio, analog and electronic * filled with jargon-busters
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Additional resources for A Broadcast Engineering Tutorial for Non-Engineers, Third Edition
Compression techniques for reducing the bit rate and size of audio files are covered later in the book. For more on bits and bytes, see Chapter 7. Audio A/D and D/A Converters The process described previously is carried out in an analog-todigital (A/D) converter. The process can be reversed in a digital-toanalog (D/A) converter, which then re-creates an analog audio waveform from the digital bitstream. These converters may be stand-alone units or may be inside other equipment. It is common for equipment that uses digital signals internally, such as a digital audio tape (DAT) recorder, to have A/D and D/A converters inside the unit.
These VBI line periods are referred to by their line numbers but contain no picture information. There are 21 VBI lines transmitted before the beginning of each field of video information, 42 in total—hence 38 5 ANALOG COLOR TELEVISION the 483 active video lines in a 525-line NTSC signal. Because there is no picture information on the VBI lines, some of them can be used to carry additional, nonvideo information, as listed on page 227 in Chapter 14. 4. Vertical Blanking The previous explanation of blanking relates to tube-type picture displays, which have been used since the early days of television.
HD signals use trilevel sync, with three levels, rather than the usual two, showing where the different parts of the signal start and finish. The RGB or YPbPr signals are referred to as component video because the three colors, or the luminance and color difference signals, are kept separate. This is an important concept, both for analog and digital video. High definition video is always component; there is no such thing as high definition composite video. CHAPTER 6 Digital Audio and Video This chapter discusses the basics of baseband digital audio and video as typically used in studio facilities.
A Broadcast Engineering Tutorial for Non-Engineers, Third Edition by Graham A. Jones