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Educational access channel
| Telecommunications Glossary |
A cable television channel specifically designated for use by local education authorities.
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Television, английский
- Телевидение; телевизионный
- The electronic transmission of pictures and sounds.
- Телевидение
- An electronic system of transmitting transient images of fixed or moving objects together with sound through space by an apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound.
Designated, английский
- Assigned, specified
- Assigned, specified something intended for a specific person or purpose
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Edutainment, английский
- Multimedia designed for teaching. it`s based on the theory that learning doesn`t have to be boring.
- A content descriptor developed by the entertainment software rating board (esrb).
- Multimedia content in software, on cd-rom, or on a web site that purports to educate the user as well as entertain.
Echo reduction, английский
A newer method of echo control, developed in 1988, uses attenuation in a new way to subjectively reduce the returned echo without the mutilation (choppiness, level drops, distortion) found in suppressers or center clippers. it rapidly and momentarily applies a variable amount of attenuation in between transmitted speech peaks (where the echo would be audible). it compares the transmit and receive signals to determine the likelihood of objectionable echo in the transmit signal, then calculates and inserts the appropriate amount of attenuation for that instant to control the echo. during outgoing speech peaks, the echo is masked by the strong local speech and rendered inaudible to the listener so that no attenuation is required.
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