1) Radio terminology
Found on
https://www.crosswordclues.com/clue/narrowband
In radio, narrowband describes a channel in which the bandwidth of the message does not significantly exceed the channel`s coherence bandwidth. In the study of wired channels, narrowband implies that the channel over consideration is sufficiently narrow that its frequency response can be considered flat. The message bandwidth will therefore be le....
Found on
http://en.wikipedia.org/wiki/Narrowband
Relative to broadband, narrowband systems carry a narrow frequency range (sometimes defined as bandwidths less than 1 MHz). Voice telephony (3 kHz) is an example of a narrowband system and television (6 MHz) an example of a broadband system.
Found on
http://www.agbnielsen.net/glossary/glossaryQ.asp?type=alpha&jump=none
Encompassing a small frequency range, typically less than 300 Hz – the narrowest natural maser lines. Narrowband radio signals tend to be characteristic of those produced by artificial sources and are therefore the type for which SETI equipment is designed to discriminate.
Found on
http://www.daviddarling.info/encyclopedia/N/narrowband.html
A low-capacity communications circuit/path. It usually implies a speed of 56Kbps or less. (Contrast with wideband and broadband)
Found on
http://www.encyclo.co.uk/local/21108
A term used to describe a low bandwidth medium. This usually refers to voice quality data rates, eg. telephone lines.
Found on
http://www.ft.com/dbglossary
Type: Term Pronunciation: na′rō-band Definitions: 1. A limited band of sound frequencies, as opposed to the wideband of frequencies also known as white noise; narrowband noise is used to mask hearing in the nontest ear in hearing measurement.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=58817
No exact match found.
