E Details

links page
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

E

Early Reflections.
Sound waves bouncing or reflecting off a wall, ceiling, floor or object in a room and reaching the listener just after the direct sound waves emanating from the speakers themselves.

Edit control.
A connection on a VCR or camcorder which allows direct communication with external edit control devices.

Edit point.
The location in a video where a production event occurs. (e.g., dissolve or wipe from one scene to another)

EDL (Edit Decision List).
A list of a video production's edit points. An EDL is a record of all original videotape scene location time references, corresponding to a production's transition events. EDLs are usually generated by computerized editing equipment and saved for later use and modification.

EDI RAM (Extended DRAM).
A DRAM varient with improved access time. Slower than SDRAM.

Echo.
The repetition of a sound delayed in time by at least 50 milliseconds after the original. An effect often found in synthesizers and samplers.

EISA (Extended Industry Standard Architectural).
A development of the ISA standard used for PC expansion slots

Electron Beam.
Flow of electrons generated in a cathode ray tube (CRT) by the electron gun and aimed at the back of the screen where the electrons excite phosphors causing them to glow various colours.

Electron Gun.
Generates the electron beam in a cathode ray tube.

Electrostatic Speaker.
Type of speaker that uses positive and negative electric charges over two thin panels, one stationary and one moveable, to generate sound (two positive or two negative charges repel each other while a positive and negative attract each other enabling movement and thus sound production).

Enclosure.
The cabinet or structure of a speaker into which the various speaker elements (the drivers, the crossover, the binding posts, etc.) are placed and attached.

Encode.
The process of combining analog or digital video signals, e.g., red, green and blue, into one composite signal.

Entropy Encoding
Refers to encoding and compression techniques which do not take into account the nature of the data being compressed.
Entropy encoding falls into two broad categories.
Suppression of repetitive sequences, (zero byte).
Statistical encoding.

Enhancing.
Improving a video image by boosting the high frequency content lost during recording. There are several types of enhancement. The most common accentuates edges between light and dark images.

Envelope.
Changes in a sound over time, including alterations in a sound's amplitude, frequency and timbre.

Envelope Generator.
A device or process in a synthesizer or other sound generator that creates a time varying signal used to control some aspect of the sound.

Equalization.
Changing the frequency response of a given audio signal by adjusting the amplitude of the signal usually in an effort to achieve a flatter frequency response (although often misused to alter the audio signal to a more "pleasing" form which is a distortion of the intended signal - for instance, artificially adding bass for a more visceral impact).

Equalizer.
An electronic device used to change the frequency response of a given audio signal; a device which provides signal equalization.

Error Correction.

Method of reconstructing digital data that is lost or destroyed using redundant data embedded in the good information left uncorrupted with the result being an identical copy of the original information.

A procedure found in digital audio systems that detects and correct inaccurate or missing bits in the data stream.

ED beta.
Extended definition betamax. Much improved version of betamax, downwardly compatible with it.

Edging.
A dark (or occasionally white) ridge around letters to make them stand out.

Edit decision list or EDL:
A refined editing sheet listing each shot to be recorded, the exact time code of edit-in and -out prints for each shot, any effects to be included, their duration, and other details. Often the EDL resides on a computer disk and is the script to drive the editing CRs during the final edit.

Edit in.
Begin recording new material; the beginning of an edit.

Edit out.
Cease recording new material; the end of an edit.

Edited master.
Same as master tape, but created by the editing process.

Edit-in point.
The first frame of raw footage video you wish to copy onto the master tape. Also the point on the master tape where you wish to start copying the footage. Both can be described by time code numbers.

Editing sheet.
A plan showing which shots will be used to create the edited master. Usually time code numbers and edit-in and out points are included.

Editor controller.
A remote control device that can backspace two or more editing decks, preroll them, and make them perform an edit.

Edit-out point.
The last frame of raw footage video you wish to copy onto the master tape. Also the point on the master tape where you'll stop copying the footage.

EFP
Electronic field production, producing TV shows outside the studio. Usually involves studio-quality equipment, techniques, and editing.

EIRP dBw contour map.
Effective Isotropic Radiated Power map used to show how a transmitter's power is distributed geographically.

Equalization.
A tone adjustment for audio frequencies, often needed to boost high or low tones coming from a phonograph cartridge or microphone, or audio tape head.

Erase head.
Electromagnet inside a VTR upstream from the video head. The erase head demagnetizes the tape prior to the video head recording on it.

Error correction.
Digital method of checking if all the numbers were transmitted or recorded correctly, and if not, resending them or estimating them.

Ethernet.
The original form of the most popular type of network today that connects PC's together over shared cabling. It was called ethernet in rememberence of the ether from which electromagetic radiation was once thought to flow.

Event Handler - (Director).
An event handler script consist of two definitions - an event and an action.

Expander.
Opposite of a compressor, an electronic audio device that extends the range of volumes in an audio signal, making loud parts louder than they actually were. Undoes the effects of a compressor, making compressed audio sound more normal.

Expansion Card.
A circuit board containing chips for a specific function, such as a modem. Plugs into a computers expansion slot.

Expansion Slot.
A connector on a motherboard into which an expansion card fits. An expansion card communicates with the processor over the bus, through an expansion slot.

External key.
Key effect where the dark and light parts of one camera's image determine which of two other cameras' pictures will be shown. Also, the absence or presence of a colour could be used to determine which parts of two other images would be shown

External sync.
Electronic pulses, coming from outside the TV camera, which synchronize the camera's picture with other cameras in the studio so the pictures can be mixed or switched.

Externally locked.
A VCR that "listens" to an outside video signal and tries to coordinate its own signal to match the other's timing. Such a VCR can synchronize its sync to another source's sync.

top