Site hosted by Angelfire.com: Build your free website today!

Main Page
General

  • Dictionary
  • Books
  • Websites
  • Showtimes
  • Timeline

    Personal
    Contact

  • Communications Media Dictionary

    A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
    Numbers Abbreviations

    PA
    Production Assistant

    PA system
    Public address (loudspeaker) system. Often used as part of a studio talkback system.

    package news package
    A completed news segment containing all needed audio and video components, ready for insertion (rolling into) a news production.

    packing the tape
    Completely fast-forwarding a videotape to the end and then rewinding it. It is recommended that this is done to equalize tension, dislodge loose tape oxide and reduce recording problems before videotapes are used for the first time.

    Pages
    In a character generator or computer graphics system, on full screen of information that can be displayed at a time.

    paint pots
    Controls that adjust video color.

    paint program
    A computer program designed create and modify graphics.

    PAL (phase alternate line)
    1)The TV color standard used in most of western Europe and other parts of the world, including Australia, India, China, Argentina, Brazil and most of Africa.
    2) The European color television system using a 50 cycle power source, 625 scan lines per frame and 25 frames per second.
    3) A color television system that was designed in Germany to overcome some of the problems of NTSC; it uses 625 scanning lines with 50 fields and 25 frames per second. This system is used in western Europe and many other parts of the world.

    PAL-M
    A color television system that is the same as PAL except that it is designed for countries that use a 60-Hz frequency for their AC power supply and therefore has 60 fields and 30 frames per second.

    palette
    The total number of colors a computer graphic system is capable of creating.

    pan
    1)The movement of the camera horizontally from the pan head.
    2)The rotational movement of the camera around a fixed point as on a tripod.

    pan handle
    The handle attached to the pan head of a camera that enables the cameraperson to pan or tilt the camera.

    pan head
    Device connecting the camera to the camera mount which allows the camera head to be tilted vertically and to be panned horizontally.

    pan pot
    An attenuator-based device which can "place" a sound to varying degrees in a left or right stereo channel by raising or lowering the volume of the sound.

    pan stick
    A grease-based foundation makeup commonly used to cover a beard or skin blemishes.

    pan-and-scan
    A type of aspect ratio conversion where the smaller area of a new display is electronically moved left and right across the original source's wider area aspect ratio in order to follow action occurring at the sides of the original picture.

    Panaglide
    A brand-name for a body camera mount which uses a system of counterbalanced springs to keep a camera reasonably steady, even when the camera operator is walking or running.

    pancake
    A type makeup base. Pancake makeup is usually water based and applied with a sponge.

    panning
    Moving the camera left or right on the pan head.

    pantograph
    Expandable device for hanging lighting instruments and TV monitors from a studio lighting grid.

    paper and pencil editing
    Logging time codes by hand on an editing log as opposed to entering the decisions directly in a videotape editing system.

    parabolic microphone
    A highly directional microphone assembly that uses a reflector in the shape of a parabola to focus sound into a microphone.

    parallel action
    See intercutting.

    parallel cutting
    The alternate intercutting of two related stories so that each is regularly updated and both reach a conclusion at about the same time. The stories are generally related in some way.

    parallel port
    Typically, a computer interface (connection) that sends and receives information eight bits at a time. PCs have parallel and serial ports.

    parallel stories
    See parallel cutting.

    Parametric Equalizer
    In addition to controlling bass and treble, it has the ability to raise and lower the level of a certain frequencies above the noise in a tape.

    parity
    A simple form of data error detection based on adding an extra bit to each digital word. This extra bit is derived by a counting of the zeros or ones in a word. Data losses during transmission can thereby be detected.

    patch cord
    The cord on a patch panel used to complete a connection between various audio or video sources and desired pieces of equipment. See patch panel.

    patch panel
    1)Patch bay. Traditionally, a master controlling device in which patch cords were used to route various audio and video sources to appropriate pieces of production equipment. Today, patch panels rely on solid-state or computer-based switching.
    2)A device that allows flexible routing of signal from one place to another.

    patch
    Using cables or electronic circuits to interconnect video and audio equipment.

    path
    The trail along which a computer-graphics object travels.

    pattern projector
    An ellipsoidal-type spotlight which includes a cookie (cucalorus) insert. Used to create a wide variety of designs on a background.

    PC / personal computer
    Normally refers to a computer using the IBM operating standard.

    PCI bus
    Peripheral Component Interchange bus which can send data between computer components at high speed.

    PCM
    Pulse code modulation. Method of recording high quality, digital sound on 8mm and Hi8 tapes.

    Pedestal
    1) Two meanings in video. It can mean the portion of the video signal that reproduces black or a camera mounting device which allows “up” or “down” camera movement.
    2) The black portions or areas of the TV picture.

    ped down
    To lower the height of a camera through the action of the camera pedestal.

    ped up
    To use the camera pedestal to raise the camera vertically.

    pedestal
    1) An adjustable camera dolly or support with wheels. Pedding the camera up or down refers to raising or lowing the camera on the pedestal. 2) The black level of a television picture as shown on a waveform monitor.

    pels
    Picture elements. The smallest dots that can be transmitted for any given bandwidth and scanning system.

    perambulator boom
    Large mic boom extending 30 or so feet, normally mounted on a dolly, that permits rapid and quiet relocation of a mic anywhere on a set.

    performance continuity
    See continuity.

    performer
    On-camera talent. A person who appears on camera in non-dramatic productions.

    performing rights license
    General permission, normally by ASCAP (American Society of Composers, Authors and Publishers) and BMI (Broadcast Music Incorporated), to play copyrighted music. Such licenses only cover general music-centered programming and not commercials, public service announcements and productions.

    periaktos
    A triangular piece of scenery.

    peripherals
    Accessories and auxiliary computer attachments that expand a computer's capabilities.

    persistence of vision
    Tendency of human vision to retain images for a fraction of a second. Discrete images presented at a rate of about 16 or more per second--even when change takes place between them--blend together, creating the illusion of motion in TV and film.

    personal mic
    A small, individual microphone, generally attached to clothing with a clip.

    perspective
    Visual phenomena in which parallel lines appear to coverage as camera-to-subject distance increases.

    phantom power supply
    Power which comes from a mixer that is used to operate a condenser mic.

    phase
    Timing relationship between two signals.

    phase cancellation
    Interference resulting in reduced audio levels caused by a sound source being picked by two microphones.

    phase distortion
    Changes in desired picture color caused by shifts in chroma phase.

    phi phenomenon
    A physiological effect that, along with persistence of vision, creates the illusion of motion when consecutive images are presented in a rapid sequence.

    phosphor aging
    Reduction in the amount of light emitted by phosphors due to deterioration with use.

    phosphor
    Material that glows within a CRT when struck by the electron beam Phosphor composition determines the maximum range of colors that can be displayed on a screen.

    photoemission
    The process of converting light--generally as focused on a camera target--into electrical energy.

    photoflood
    lamp A lamp that resembles a normal light bulb except that it produces a much higher light output. Photoflood lamps normally last only about six hours.

    pickup pattern
    Polar pattern. Area of sound sensitivity surrounding a microphone.

    pickup shots
    Scenes that are shot after the main taping that will later be edited into the production.

    Pick-up Tube
    A device that changes light images into an electrical signal.

    pie chart
    A graphic interpretation of data where categories resemble pieces of a whole pie.

    pilot signal
    A signal from a satellite transponder used by ground stations to align up-link dishes.

    pinning
    Narrowing down and concentrating a light beam from an adjustable spotlight.

    pirate
    To illegally copy or broadcast a copyrighted production without permission.

    pitch
    The highness or lowness (frequency) of a sound.

    pixel
    1)Acronym for picture element. The smallest part of a picture element that a computer can address or recognize.
    2) A picture element, the smallest part of a television imaging device. CCD semiconductors used in today’s best NTSC cameras have in excess of 500,000 pixels.
    3) Picture element.

    pixillation
    A technique consisting of jerky, speeded-up animation resulting in an exaggerated "silent movie" effect. To achieve this effect, video frames are omitted at regular intervals throughout the sequence.

    Plasma Display Screen
    A video display device that uses electrically charged gasses (plasma) to activate color pixels.

    PL / private line / phone line, production line
    Wired or wireless headset intercommunication link between production personnel.

    playback head
    The device on a audio or video tape machine responsible for detecting prerecorded material.

    plug and play
    Ability of computer operating system to automatically detect and adapt to a new component.

    plot
    The basic story line of a dramatic production.

    polar pattern
    Pickup pattern. The range of sensitivity surrounding a microphone as plotted in a two- or three-dimensional drawing.

    polarity reversal
    In video, the reversal of the gray scale tones (white becomes black, etc.) or colors (colors turn into their complements). In audio, a reversal of wires resulting in a positive charge becoming negative and the negative becoming positive.

    polarity
    The positive or negative characteristics of an image or electrical signal.

    polarizing filter
    A filter (often adjustable) that reduces or eliminates reflections from glass, water and shiny surfaces. Also used to dramatically intensify contrast between the sky and clouds.

    pole cat
    A pole with spring-loaded, telescoping sections placed between the floor and grid pipes and used to attach scenery and set pieces.

    pool-hall lighting
    Lighting from a single source, usually hanging in the middle of the set and visible in the scene.

    pop filter
    A screen placed over a microphone that reduces the effect of speech plosives and wind.

    ports
    Openings in a microphone case designed to achieve a specific pickup pattern and frequency response. Also, connections on a computer used for plugging in accessories.

    positioner
    A video effects control which can move an inserted key source to any position in background video.

    Positive Interlace
    An interlace method in which the position of each line will be the same in every frame of video.

    possible future impact
    A measures of newsworthiness relating to the possible consequences to an audience of events outlined in a story.

    post
    Short for postproduction.

    postproduction switcher
    A video switcher which is capable of interfacing with two or more videotape machines and designed to meet the specific needs of editing.

    post-recording
    Any audio work done after the main taping has been completed.

    postproduction
    Any production work done after all the main taping has been completed. The term typically refers to editing.

    pot
    A potentiometer. A control which uses a variable resistance to altering the intensity of audio and video signals.

    POV
    Point of view. A shot from an angle that approximates what a designated actor is seeing at a particular moment.

    power zoom
    A lens with a servo motor that makes possible electrically controlled zooms.

    PPM
    Peak program level meter. A meter that monitors audio levels and, unlike a normal VU meter, is able to accurately respond to rapid transient peaks (changes) in volume.

    practical
    A prop that will actually be used in a scene, as opposed to those that are meant to be seen only. For example, a light that can be switched on or off by an actor.

    Pre-light
    A period of time scheuled the day before the actual shoot day for rigging lights or special propping. Pre-lighting is often done over several hours the night before the shoot, giving the director more time to work on staging and performance the day of the shoot.

    premium channel
    Cable channel that is available only for an extra fee.

    preroll
    The time needed between the start of a videotape and when it stabilizes.

    preamp; preamplifier
    The initial electronic device used to increase the strength of signals from microphones and other audio equipment.

    preproduction
    The planning stage of a production.

    presence The subjective feeling of special "closeness" a listener has to a performer, typically as achieved through a specific balance of frequencies within a reproduced audio signal.

    preset monitor / PST
    Preview monitor. A video display allowing sources to be previewing and adjusted before use.

    pressure zone microphone
    PZM Microphone mounted on a reflecting surface. Sound waves build up a pressure zone within the mic housing before being transferred to the microphone. Often used for group discussions around a table.

    preview bus
    A switcher bus, generally connected to a preview monitor, used for setting up and checking video sources before use.

    preview monitor
    A video monitor that can be used to check any camera or video effect before use.

    Primary Colors
    In television, the colors red, green, and blue.

    prime lens
    A fixed-focal-length lens.

    principal photography
    Scenes that include the major actors.

    print-through
    The undesirable transfer of an audio or video signal from one layer of tape to another on a tape reel.

    prism block
    See beam splitter.

    prism lens
    A special-effects device that attaches to the front of the camera lens and breaks up the primary image into multiple images.

    privacy
    An individual's--especially a private citizen's--legal right to be left alone and not badgered by newspeople. Privacy includes intrusion on seclusion, the public disclosure of private facts, false light and commercial appropriation.

    private television
    Institutional television. Non-commercial television that includes corporate, educational, medical and religious television production.

    privilege; privileged
    A legal term relating to a degree of freedom that certain types of communication have from libel or slander actions. Certain political and legislative communication can be broadcast without being actionable under slander or libel.

    proc amp
    1)Processing Amplifier. Electronic device designed to correct levels of a video signal, and to replace or reshape sync pulses with new pulses.
    2) Analog circuit that allows the luminance and chrominance parameters in a video camera to be controlled.
    3) Video processing amplifier, a piece of equipment that strips the distorted sync from a video tape playback signal and replaces it with parameters, such as hue, video brightness, pedestal (black) levels, etc.

    prosumer video equipment
    A combination term denoting equipment which lies between professional and consumer-quality video equipment.

    producer
    The creator and organizer of television shows, usually in charge of financial matters.

    production assistant
    An assistant to a producer or director can be assigned responsibilities for a wide variety of production details, including script changes, personnel issues, talent coordination, logistical arrangements, etc.

    production breakdown
    The division of the script into individual scenes and shots so that an efficient shooting schedule can be planned.

    production manager
    The individual under the producer and director who supervises and coordinates all of the business and technical aspects of production.

    production schedule
    A written agenda showing time periods of various activities during a production day.

    production switcher
    As opposed to a editing switcher or a master control switcher, a switcher designed to work in conjunction with productions originating form a control room or remote van. professional video equipment A term which covers industrial and broadcast-quality equipment.

    program
    Computer software. A sequence of instructions given to the computer to perform specific functions or tasks.

    program audio
    Final audio mix intended for recording, broadcast or distribution.

    program bus
    The master bus on a video switcher which determines the output signal of the switcher.

    program proposal
    A written outline or summary of a proposed production. In dramatic productions they are usually referred to as treatments. (See module on Production Outlines and Treatments for a complete discussion.)

    progressive scanning
    1)Sequential scanning, or non-interlaced video scanning. A television scanning system in which each scanning line follows its predecessor in a progressive fashion, rather than skipping intermediate lines to be filled in by the next field.
    2)A video format in which each scanning line follows the previous in progression. Unlike interlace scanning, the field and frame rate are identical in a progressive scanning system.

    projection television
    An optical and electronic system for creating a large-screen video display.

    prominence
    A measures of newsworthiness relating to how important or well known the people, places or things in the story are to an audience.

    prompter
    TelePrompTer. An electrical device for displaying a script that can be read by talent during a production.

    prop
    Property. Something that is handled or used within a set by talent during a production.

    protection
    A backup copy of a recording made in case the primary recording has problems.

    proximity effect
    The exaggeration of low-frequency response associated with most microphones when they are used at very close distances. Some microphones have built-in adjustments that can compensate for proximity effect.

    PSA / public service announcement
    A non-commercial announcement broadcast by a television station.

    pseudo 3-D system
    An a computer-based electronic graphics system capable of being used to do drawings which, rather than appearing flat, seem to have three dimensions.

    public access programming
    Cable channels or CATV programs designed to serve the interests of the community.

    public domain / PD
    A creative work that can be used without charge because it is not copyrighted or because the copyright has expired.

    public property
    Property, generally owned by a government, which does not have the legal access limitations inherent in private property. Property which can be freely used by news reporters and photographers.

    Pull-Back
    The movement of the camera away from a subject.

    pull focus
    Shifting focus from one part of a scene to another to redirect viewer attention.

    pulse count system
    Control track editing. A system of editing in which the machine counts the control track pulses on a videotape to establish edit points and pre-roll times. Accuracy problems result with very slow or very fast shuttle speeds.

    pure metal tape
    A recording tape capable of a high signal-to-noise ratio, high-frequency response and excellent record-playback efficiency.

    Pusn-in
    The movement of the camera forward on a dolly, or the magnification of the image with a zoom lens.

    push-off wipe
    An electronic video effect in which one image replaces another by appearing to push it off the screen.

    pylon
    Triangular set piece resembling a pillar.

    pyrotechnics
    Special effects involving explosions.