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account executive  Salesperson who visits local merchants to sell them broadcast advertising.
addressable converter  Device that allows pay-per-view cable subscribers to receive their programs.
adjacency  Commercial placement that immediately precedes or follows a specific television, cable, or radio show.
advanced television (ATV)  Improved resolution TV that is compatible with existing TV receivers.
affiliate  Local radio or TV station that has a contractual relationship with a network.
aftermarket  Alternative markets for TV series after they run on the major networks; syndication and overseas markets are examples.
alternator  Device that generates continuous radio waves; necessary for the broadcasting of voice and music.
American Society of Composers, Authors and Publishers (ASCAP)  Group that collects and distributes performance royalty payments to various artists.
amplifier  Device that boosts an electrical signal.
amplitude  Height of a wave above a neutral point.
amplitude modulation (AM)  Method of sending a signal by changing the amplitude of the carrier wave.
analog signal  Transduced signal that resembles an original sound or image; for example, a phonograph record contains analog signals.
area of dominant influence (ADI)  In ratings terminology, that region of a market where most of the viewing or listening of that market’s TV and/or radio stations occurs.
ARPANET  Early version of the Internet.
average quarter-hour persons  In radio, average number of listeners per 15-minute period in a given daypart.
audience flow  Movement of audiences from one program to another.
audimeter  Nielsen rating device that indicates if a radio or TV set is in use and to what station the set is tuned. See also Storage instantaneous audimeter.
audio board  See Mixing console.
audion  Device invented by Lee De Forest that amplified weak radio signals.
auditorium testing  Research technique that tests popularity of records by playing them in front of a large group of people who fill out questionnaires about what they heard.
barter  Type of payment for syndicated programming in which the syndicator withholds one or more minutes of time in the program and sells these time slots to national advertisers.
beam splitter  Optical device that dissects white light into its three primary colors: red, green, and blue.
bicycle network  A network that distributes programs physically by shipping tapes to various stations.
blacklist  List of alleged Communists and Communist sympathizers circulated in the 1950s; contained the names of some prominent broadcasters.
blanket rights  Music licensing arrangement in which an organization pays BMI or ASCAP a single fee that grants the organization the right to play all of BMI’s or ASCAP’s music.
blanking pulse  Signal carried inside the TV camera that shuts off the scanning beam to allow for persistence of vision.
block programming  In radio, programming to one target audience for a few hours and then changing the format to appeal to another group. Used by many community radio stations.
browser  Type of software that allows people to find information on the World Wide Web.
bumper  Segment that transitions a newscast to or from a commercial break.
burnout  Tendency of a song to become less popular after repeated playings.
Buying Power Index (BPI)  A weighted measurement of describing a specific geographic market’s ability to goods, based on population, effective income, and retail sales.
cable TV  Distributing television signals by wire.
call-out research  Radio research conducted by telephone to evaluate the popularity of recordings.
carrier wave  Basic continuous wave produced by a radio or TV station; modulated to carry information.
catharsis theory  Theory that suggests that watching media violence relieves the aggressive urges of those in the audience. There has been little scientific evidence for this position.
cathode ray tube (CRT)  Picture tube in a TV set.
C band  Satellite that operates in the 4–6-gigahertz frequency range.
channel  Frequency on which a station broadcasts.
channel capacity  In cable, the number of channels that can be carried on a given system.
charge-coupled device (CCD)  Solid-state camera that uses computer chips instead of tubes.
chromakey  Process by which one picture is blended with another in TV production.
clandestine radio services  Unauthorized broadcasts, usually political in nature, conducted by groups in opposition to the current government.
claw  In a motion picture projector, the device that grabs each frame of film by the sprocket holes and holds it in place in front of a light.
clearance  Process in which an affiliate makes time available for a network program. In syndication, refers to the number or percentage of TV markets in which a program is carried.
clone  Digital copy made from a digital master.
clutter  Commercials and other nonprogram material broadcast during program breaks.
CODEC  Technology that allows compression and decompression of large amounts of data.
coincidental telephone interview  Method of audience research in which a respondent is asked what radio or TV station he or she is listening to at the time of the call.
common carrier  Communication system available for public use such as the telephone or postal service.
community-service grants  Money given by the government to public TV stations to support programming of special interest in the station’s broadcast area.
compensation  Fee paid by networks to their affiliates for carrying the network fed program. Compensation rates are based on market size, ratings, and affiliate strength.
compulsory license  Fees paid by cable systems that use distant nonnetwork signals from other markets.
condenser microphone  Microphone that uses an electrical device to produce the equivalents of sound waves.
cooperative advertising  Arrangement in which national advertisers assist local retailers in paying for ads.
cooperative advertising (co-op)  A commercial where the cost is shared by the manufacturer of the product and the local retail outlet.
corporate video  Usually done in a business setting, video production intended for a specific audience and usually not for public use.
cost per thousand (CPM)  One measure of efficiency in media. Defined as the cost to reach one thousand people.
coventuring  Arrangement by which a TV station's news department shares its newscasts with other local TV stations, cable systems, or radio stations.
cross-licensing agreement  Agreement made between or among companies that allows all parties to use patents controlled by only one of the parties.
cultivation theory  Theory suggesting that watching a great deal of stereotyped TV content will cause distorted perceptions of the real world.
cumulative audience  In ratings, the number of different households that watch or listen to a program in a specified time period. Also called the unduplicated audience.
dayparts  A way of dividing up the broadcast day to reflect standard time periods for setting advertising rates.
deflection magnet  Device that directs the scanning beam inside a TV camera.
demographics  Science of categorizing people based on easily observed traits. Age and sex, for example, are two common demographic categories.
dichroic mirror  Mirror that separates white light into red, green, and blue light. Used inside a color TV camera.
dielectric  Insulated middle portion of a coaxial cable.
digital audio broadcasting (DAB)  Broadcasting a radio signal using a binary code (Os and 1s).
digital audio tape (DAT)  High-quality audio tape that uses the same digital technology as a CD.
digital compact cassette (DCC)  Digital audio tape packaged in a cassette format.
digital signal  Transduced signal that consists of binary codes (Os and 1s) that represent the original signal.
direct-broadcast satellite (DBS)  Satellite transmission designed to be received directly by the home.
distance learning  Process in which educational material is distributed by video to students in different locations.
downconverter  Device that decodes microwave signals.
drop  In cable, that part of the system that carries the signal from the feeder cable into the house.
duopoly  1. System of broadcasting in which two systems, one public and one private, exist at the same time, as in Canada. 2. Owning more than one AM or FM station in the same market.
dynamic microphone  Microphone that uses a diaphragm and electromagnets to change sound energy into electrical energy.
effective radiated power (ERP)  Amount of power a radio station is permitted to use.
electroencephalogram (EEG)  A physiological measure of brain waves used in broadcasting and cable research.
electroluminescence (EL)  Method of providing a flatscreen TV receiver.
electron gun  Device in a TV camera that produces a stream of electrons that scans the image to be televised.
electronic news gathering (ENG)  Providing information for TV news with the assistance of portable video and audio equipment. Also called electronic journalism (EJ).
encoder  Device that combines the red, green, and blue information in a color TV signal with the brightness component.
equalizer  Electronic device that adjusts the amplification of certain frequencies; allows for fine tuning an audio signal.
erase head  The part of a tape recorder that returns the metal filings to a neutral position, thus erasing any signal on the tape.
evening drive time  In radio, a peak listening period that extends from 3:00 to 7:00 P.M. when many people are commuting home from work or school.
exclusivity deal  In cable, an arrangement whereby one premium service has the exclusive rights to show the films of a particular motion picture company.
exit poll  Survey in which voters are asked about their voting decisions immediately after they leave the voting booth; used to predict the outcomes of elections before the polls close.
expanded sample frame  In ratings, a technique by which a sample is increased to include more minority groups.
fair use  In copyright law, a small portion of a copyrighted work that can be reproduced for legitimate purposes without the permission of the copyright holder.
fairness doctrine  Currently defunct policy of the Federal Communications Commission that required broadcast stations to present balanced coverage of topics of public concern.
false light  A type of invasion of privacy in which media coverage creates the wrong impression about a person.
feeder line  In cable, that part of the system that transfers the signals from trunk lines to house drops.
fiber optic  Cable used for transmitting a digital signal via thin strands of flexible glass.
fidelity  Degree of correspondence between a reproduced signal and the original.
field  Half of a complete TV picture; one field is scanned every sixtieth of a second.
financial interest and syndication rules (fin-syn)  FCC regulations limiting network participation in ownership and subsequent syndication of programs produced for the network.
focus group  Small group of people who discuss predetermined topics, such as a TV newscast.
Food and Drug Administration (FDA)  Federal commission that is responsible for overseeing prescription drug advertising on TV.
footprint  Coverage area of a communications satellite.
format  The type of music or talk that a radio station chooses to program. Formats are usually targeted at a specific segment of the population. See also Demographics.
formative evaluation  In corporate video, testing the storyboard, script, and rough cut of the program to determine if these elements are designed as originally planned.
frame  Two fields or one complete TV picture; one frame is scanned every thirtieth of a second.
franchise agreement  A contract between a local government and a cable company that specifies the terms under which the cable company may operate.
frequency  Number of waves that pass a given point in a given time period, usually a second; measured in hertz (Hz).
frequency modulation (FM)  Method of sending a signal by changing the frequency of the carrier wave.
frequency response  Range of frequencies that a radio set is capable of receiving.
future file  Collection of stories to be used in upcoming newscasts.
galvanic skin response (GSR)  Measure of the electrical conductivity of the skin. Used in broadcast and cable research.
geosynchronous orbit  A satellite orbit that keeps that satellite over one spot above the earth.
globalization  Tendency for mass media firms to have interests in countries all over the world.
grazing  Method of TV viewing in which the audience member uses a remote-control device to scan all available channels during commercials or dull spots in a program.
gross Impressions  The total number of advertising impressions made during a schedule of commercials. GIs are calculated by multiplying the average persons reached in a specific time period by the number of spots in that period of time.
gross rating point (GRP)  In broadcasting/cable, the size of the audience during two or more dayparts. GRPs are determined by multiplying the specific rating by the number of spots in that time period.
headend  In cable, the facility that receives, processes, and converts video signals for transmission on the cable.
height above average terrain (HAAT)  Measurement of the height of a transmitter tower; used to classify FM stations.
helical-scan tape recording  Method of videotape recording in which the signal is recorded in diagonal strips.
high-definition television (HDTV)  Improved resolution TV system that uses approximately 1100 scanning lines.
holography  Three-dimensional lensless photography.
homes passed  Number of homes that have the ability to receive cable TV; that is, homes passed by the cable.
hook  Short, easily identifiable segment of a recording.
households using television (HUT)  Number of households that are watching TV at a certain time period.
hypertext markup language (HTML)  Language used to create documents for the World Wide Web
hue  Each individual color as seen on color TV.
hypodermic needle theory  Early media effects theory stating that mass communicated messages would have a strong and predictable effect on the audience.
independent  Station not affiliated with a network.
integrated services digital network (ISDN)  A telephone circuit that is completely digital at both ends. ISDN provides higher speed connections between users than standard telephone circuits.
interactive television  System in which TV viewers respond to programs by using a special keypad.
international broadcasting  Broadcast services that cross national boundaries and are heard in many countries.
International Telecommunications Union (ITU)  Organization that coordinates the international broadcasting activities of its members.
internet  A global network of interconnected computers.
inventory  the amount of advertising time a media outlet has to sell. Unsold time.
ISP  Internet Service Provider; A company that connects subscribers to the Internet.
keying  Process by which one video signal is electronically cut out of or into another.
kinescope  Early form of recording TV shows in which a film was made of a TV receiver.
Ku band  Communications satellite that operates in the 12–14-gigahertz frequency range.
LAN (Local Area Network)  A group of computers that are linked together over a small area.
license agreement  Arrangement between a syndicator and a TV station specifying the number of times a movie or TV show may be shown in a given time period.
limited-effects theory  Media effects theory suggesting that media have few direct and meaningful effects on the audience.
liquid crystal display (LCD)  Flat-screen display system being developed for use in TV receivers.
live assist  Form of radio production where local announcers and DJs are used in conjunction with syndicated programming.
local market agreement (LMA)  Arrangement whereby a company that owns one radio station can manage assets of another station without violating FCC ownership rules.
local origination  Program produced by a local TV station or cable system.
lowband  That part of the cable occupied by channels 2 to 6 and FM radio.
low-power television (LPTV)  Television stations that operate with reduced coverage and have a coverage area only 12–15 miles in diameter.
luminance  Degree of brightness of a TV picture.
market  Specific geographic area served by radio and TV stations. The United States is divided into approximately 210 different markets.
metanalysis  Research technique that summarizes the findings of many separate studies about a single topic.
midband  That part of the cable signal occupied by TV channels 7 to 13 and cable channels 14 to 22.
minidisc (MD)  A more compact version of the CD, about one-fourth the size of a standard CD.
minidoc  Multipart reports that generally air Monday to Friday on local TV stations. Each minidoc segment may only be three or four minutes long.
mixing console  Master control device in an audio studio that selects, controls, and mixes together various sound inputs.
modem  Device that connects computers to phone lines.
modulation  Encoding a signal by changing the characteristics of the carrier wave.
monopoly  The ability to exercise unrestrained power over a market; the existence of no real or effective competition.
morning drive time  In radio, 6:00 to 10:00 A.M. Monday through Friday when large numbers of people are listening in their cars.
MP3  Recording compression technique that makes it possible to share audio files over the Internet
multichannel, multipoint distribution system (MMDS)  System using microwave transmission to provide cable service into urban areas; also called wireless cable.
multichannel television sound (MTS)  Stereo sound and a second audio channel are multiplexed in the audio portion of the TV signal.
multimedia  System that combines TV set, computer, CD player, and telephone.
multiple-system operator (MSO)  Company that owns and operates more than one cable system.
multiplexing  Sending different signals with the same channel.
must-carry rule  Regulation which stated that cable systems had to carry the signals of all broadcast TV stations seen in the market served by cable.
National Association of Broadcasters (NAB)  Leading professional organization of the broadcasting industry.
National Cable Television Association (NCTA)  Leading professional organization of the cable industry.
national representative (rep)  Organization that sells time on a local station to national advertisers.
national spot sales  Advertising placed on selected stations across the country by national advertisers.
National Television System Committee (NTSC)  Group that recommended the current technical standards for color TV. Also refers to the North American standard for television broadcasting.
network compensation  Money paid by a network to one of its affiliates in return for the affiliate’s carrying network show and network commercials. See also Clearance.
network programming  Programs that are financed by and shown on TV networks.
news consultants  Research companies that advise stations about ways to improve the ratings of their news programs.
news-on-demand  Systems in which TV news service and Internet portal coperate so that viewer can watch only those news stories that he or she is interested in.
noise  Unwanted interference in a video or audio signal.
oligopoly  In economics, a situation in which there is limited or managed competition. In broadcasting, having only limited number of competitors, which assures that every outlet will find some audience
open video system  An arrangement whereby a telephone company can offer television programs.
orbital slot  "Parking place" for a communications satellite in geosynchronous orbit.
oscillation  Vibration of a sound or radio wave.
overbuild  More that one cable system serving a community.
package  1. News story that includes pictures of the newsworthy event, the natural sound, and a reporter’s voice-over. 2. Series of theatrical movies made available by a distribution company for sale to cable and broadcast TV stations.
panel method  Research technique in which the same people are studied at different points in time.
payola  Bribes given to DJs to influence them to play particular records on radio stations.
pay per transaction (PPT)  System of videocassette rental in which the motion picture production company receives a portion of the rental fee whenever one of its movies is rented.
pay per view (PPV)  System in which cable subscribers pay a one-time fee for special programs such as movies and sporting events. See also Addressable converter.
PEG channel  Cable station set aside for public, educational, or government use.
peoplemeter  In ratings, hand-held device that reports what TV show is being watched. Peoplemeters also gather demographic data about who is watching.
persistence of vision  Tendency of perceptual system to retain an image a split second after the image is removed from sight. Makes possible the illusion of motion in film and TV.
personal peoplemeter (PPM)  A device that is carried by an individual to measure radio listening and TV viewing by detecting subaudible tones in the stations' signals.
phi phenomenon  Tendency of perceptual system to "fill in blanks" between two light sources located close to one another. As one light blinks off and the other blinks on, the brain perceives the change as motion.
photon  Packet of light energy.
pilot  Sample episode of a proposed TV series.
pirate station  Unauthorized radio or TV station that generally broadcasts entertainment material.
playback head  In a tape recorder, the device that reproduces the signal stored on the tape.
playlist  List of records that a radio station plays. See also Format.
plug-in  Special type of software that allows Internet browsers to display special audio, video, and graphics files.
plugola  Gifts given to DJs for promoting a product on the air. Listeners are unaware that the DJ is being compensated for these mentions.
pods  A cluster of commercials, promotions, or other announcements.
portal  First page opened by an Internet browser.
preemption  Show that a network affiliate refuses to carry.
prime-time access rule (PTAR)  In general, a regulation that limits the TV networks to three hours of programining during the prime-time period. Exceptions are made for news, public affairs, children’s shows, documentaries, and political broadcasts.
privatization  Trend in which former public or state-owned broadcasting systems are becoming privately owned.
promotional announcement (promo)  Short announcement to remind viewers or listeners about an upcoming program.
psychographic research  Research that uses personality traits to segment the audience.
psychographic variables  Psychological factors that explain audience behavior.
public service announcement (PSA)  Announcement for charitable or other worthwhile endeavor presented free of charge by broadcasters.
puffery  Allowable exaggeration in advertising claims.
pulse code modulation (PCM)  Method used in digital recording and reproduction in which a signal is sampled at various points and the resulting value is translated into binary numbers.
pure competition  In economics, a state where there is sufficient competition in the market place that prices of goods and services move toward actual cost. In broadcasting, having a sufficient number of voices in the marketplace to keep ratings and rates in a state of equilibrium.
Q score  SeeTVQ.
radio broadcast data systems (RBDS)  New generation of radio receivers that can display infromation as well as play music.
rating  In TV, the percentage of households in a market that are viewing a station divided by the total number of households with TV in that market. In radio, the total number of people who are listening to a station divided by the total number of people in the market.
recording head  Device in a tape recorder that stores a new signal on the tape.
retracing  Scanning process that goes on inside a TV set.
right of first refusal  Network’s contractual guarantee to prohibit a production company from producing a specific show for another client.
rotation  Mix or order of music played on a radio station.
rough cut  Preliminary rendition of an ad or a TV show produced so that viewers can get a general idea of the content.
sampling  1. Selecting a group of people who are representative of the population. 2. In digital signal processing, selecting a number of points along an analog signal and converting the signal into binary numbers.
satellite master antenna system (SMATV)  A system in apartment buildings in which a master receiving dish and antenna on top of the building pick up TV signals, which are then transmitted by wire to dwelling units.
satellite news gathering (SNG)  Use of specially equipped mobile units to transmit live and taped remote reports back to a local station.
saturation  Strength of a color as seen on color TV.
scanner  Radio monitor that is tuned to police and fire frequencies.
scanning  Technique by which the beam of electrons inside a TV camera traces its way across an image.
scatter market  In broadcasting, buying commercial time that corresponds to the calendar year. The four quarters in the scatter market reflects the various seasons of the year.
sell-through  A tape designed to be sold directly to consumers as opposed to video rental stores.
sets in use  In ratings, the number of radio or TV sets that are in operation at a given time.
share  In radio, the number of people who are listening to a station divided by the total number of people who are listening to radio at a given time. In TV, the total number of households watching a given channel divided by the total number of households using TV.
sideband  Signals above and below the assigned frequency of a carrier wave at a TV or radio station.
signal-to-noise ratio  Amount of desired picture or sound information that remains after subtracting unwanted interference.
simulcast  Radio program aired in both AM and FM at the same time on two different stations. Also a TV show, usually a concert, carried by an FM station at the same time it is being televised.
single-system operator (SSO)  Company that owns and operates one cable system.
skip  Tendency of radio waves to reflect off the ionosphere and back to earth, then back to the ionosphere, and so on. Makes possible long-distance radio transmission.
SMATV  Satellite master antenna television.
specific-effects theory  Theory that posits there are certain circumstances under which some types of media content will have a significant effect on some audience members.
spot sets  Segments in radio programming, such as commercials and promotions, which interrupt the normal programming content.
standing order  Making a commercial order that gives a certain time in the broadcast schedule to the same customer until the order is rescinded.
stand- up  Reporter standing in front of the camera providing an opening, bridge, or closing for a story. See also Package.
station  Organization that broadcasts TV or radio signals.
station identification  Station announcement broadcast at the top or bottom of the hour telling call letters and location and location or station logo superimposed on the screen.
step deal  Contractual arrangement by which TV series are produced. Production proceeds in a series of defined steps, with the network having the option to cancel after each step.
stimulation theory  Theory suggesting that watching media violence will stimulate the viewer to perform aggressive acts in real life. Opposite of the catharsis theory.
storage instantaneous audimeter (SIA)  Computer assisted TV measurement device that makes possible overnight ratings.
storyboard  Drawings illustrating what a finished commercial or segment of a TV show will look like.
streaming  A technique that allows sound and moving pictures to be transmitted on the World Wide Web.
stripping  Scheduling the same show to run in the same time period from Monday through Friday.
subscription television (STV)  System that sends programs in scrambled form to TV sets equipped with decoders.
subsidiary communications authorization (SCA)  A service provided by FM stations using additional space in their channel to send signals to specially designed receivers.
summative evaluation  In corporate video, research that looks at the effectiveness of a completed program. See also Formative evaluation.
superband  That part of the cable signal that carries channels 23 to 69.
superstation  Local TV station that is distributed to many cable systems via satellite, giving the station national exposure.
survey  Research method that uses questionnaires or similar instruments to gather data from a sample of respondents.
sustaining program  Common in early radio, a program that had no commercial sponsors.
switcher  Device used to switch from one video signal to another. Can also be used to combine more than one video signal.
synchronization pulse  Signal that enables the output of two or more cameras and other video sources to be mixed together and also keeps the scanning process in the camera operating in time to coincide exactly with the retrace process in the TV receiver.
syndicated exclusivity (syndex)  FCC rule stating that local cable systems must black out programming imported from a distant station if it is being carried by a local station in the cable system’s market.
syndication  The sale and and distribution of programming directly to the station. First-run syndication involves products that have been specifically produced for airing in the syndication marketplace.
target audience  Specific group a radio or TV program is trying to attract.
target plate  Mirror-like device inside a TV camera that holds the image while the image is scanned by the electron beam.
teaser  Clever line used to introduce a segment of a newscast.
teleconference  Video link between individuals, frequently used for business conference.
teleports  Facilities that provide uplinks and downlinks with communication satellites.
teletext  Cable service that offers text and graphics displayed on the screen.
television receive-only earth station (TVRO)  Home satellite dish that receives TV programming.
tiering  Process of selling cable subscribers increasing levels of service.
timeshifting  Recording something on a VCR to watch at a more convenient time.
tip sheet  Radio industry publication reporting current musical preferences across the country.
total survey area (TSA)  In ratings, a geographic area where at least some viewing of TV stations in a given market occurs. See also Area of dominant influence.
tradeout  Swapping advertising time for a product or service.
transponder  The part of a communication satellite that receives a signal from an earth station and retransmits it somewhere else.
treatment  Short narrative used to sell an idea for a TV show or series to a production company.
trunk line  Main cable lines connecting the headend to the feeder cables.
turnkey automation  Radio station that is fully automated.
TV Q  Score that measures the popularity of TV celebrities.
TVRO  satellite television receive-only earth station.
ultra high frequency (UHF)  The portion of the electromagnetic spectrum that contains TV channels 14 to 69.
underwriting  Assisting a station in paying for a public radio or TV program in exchange for a mention of the underwriters.
upfront sales  Network television time that is sold in the summer before the actual television season begins. Upfront sales are frequently for dayparts as opposed to actual programs.
uplink  Ground source that sends signals to a communication satellite.
uses and gratifications  Research tradition that examines the reasons people use the media.
V-chip  Device installed in TV sets that blocks out violent programming.
velocity microphone  Microphone that uses a thin metal ribbon and electromagnets to reproduce sound.
vertical blanking interval  Portion of the TV signal that occurs between fields; used to send teletext and closed-captioning.
vertical integration  Process by which a firm has interests in the production, distribution, and consumption of a product.
very high frequency (VHF)  The part of the electromagnetic spectrum that contains TV channels 2 to 13.
video news release (VNR)  In corporate video, a complete video package sent by a company to a news organization in an attempt to get broadcast time.
video on demand  Interactive service that allows customers to order the television programs and services they want when they want them.
videotex  Two-directional information service linking a data bank with computer terminals via cable or telephone lines.
video toaster  A personal computer that generates special video effects.
virtual reality  Computer system that creates three-dimensional images that users interact with by means of special goggles and gloves.
voice tracking  Radio technique in which a disc jockey records his audio for a program and all other elements are added later by a computer. Makes it possible for one DJ to do programs for several different stations.
waveform  Visual representation of a wave as measured by electronic equipment.
wavelength  Distance between two corresponding points on an electromagnetic wave.
World Wide Web  A network service that provides a means of retrieving and displaying documents that are located on Internet computer site by linking users to networks.
zapping  Deleting the commercials when videotaping a program off the air for later viewing.
zipping  Fast-forwarding through the commercials when viewing a program recorded off the air.

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