About: Falsing

Facets (new session)
Description
Metadata
Settings
- Rule:
- Inverse Functional Properties:
- "Same As":

About: Falsing Goto Sponge NotDistinct Permalink

An Entity of Type : yago:Signal106791372, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)
QRcode icon

http://dbpedia.demo.openlinksw.com/c/8idzYtmVVJ

In telecommunications, falsing is when a decoder assumes that it is detecting a valid input even though one is not present. This is also known as a false decode. This article will discuss analog circuits used before digital signal processing. Examples of decoder falsing include: Falsing sometimes occurs on a voice circuit when a human voice hits the exact pitch to which the tone decoder is tuned, a condition called talk-off.

Attributes	Values
rdf:type	yago:WikicatTelephonySignals yago:Abstraction100002137 yago:Communication100033020 yago:Signal106791372
rdfs:label	Falsing (en)
rdfs:comment	In telecommunications, falsing is when a decoder assumes that it is detecting a valid input even though one is not present. This is also known as a false decode. This article will discuss analog circuits used before digital signal processing. Examples of decoder falsing include: Falsing sometimes occurs on a voice circuit when a human voice hits the exact pitch to which the tone decoder is tuned, a condition called talk-off. (en)
dct:subject	Telephony signals Radio technology Error
Wikipage page ID	6723290 (xsd:integer)
Wikipage revision ID	1051895787 (xsd:integer)
Link from a Wikipage to another Wikipage	Answering machine Telephony signals General Electric Motorola Logical conjunction Total harmonic distortion Radio technology CTCSS DTMF Direct current Telephone Rotary dial Ringing (signal) Telecommunications Error ICAO Multi-frequency Single-frequency signaling Two-way radio Selcall Two-out-of-five code Quik Call I
sameAs	Falsing Falsing Falsing Falsing
dbp:wikiPageUsesTemplate	dbt:Notability dbt:Reflist
has abstract	In telecommunications, falsing is when a decoder assumes that it is detecting a valid input even though one is not present. This is also known as a false decode. This article will discuss analog circuits used before digital signal processing. Examples of decoder falsing include: * a telephone answering machine detecting dial pulses from a rotary dial as ringing voltage, with the result that the answering machine answers in response to dialing. * a two-way radio with an enabled CTCSS decoder turns on the receive audio for one or two syllables of a signal with a close-in-tone-frequency (but wrong) CTCSS tone. The person listening to the radio occasionally hears nonsense partial words from the receiver's speaker: "et"... "up"... * a ringy telephone circuit with SF single-frequency signaling and poor level discipline drops calls because it sees harmonic frequencies or the distorted waveform as a valid "circuit idle" or "on-hook" SF signal. * power line transients cause a telemetry decoder to momentarily decode the power line noise as a false "turn-on" command, causing a remote-controlled water well pump to cycle on and off needlessly. Analog tone decoders used in telephone and two-way radio systems are designed to work in a balance between expensive, complicated filtering and low cost simplicity. The engineering problem is to make the simplest circuit that will work reliably. A decoder generally tries to filter audio input to strip off every audio component except a sought-after, specific tone. In part, a decoder is a narrow bandpass filter. A signal that gets through the narrow filter is rectified into a DC voltage which is used to switch something on or off. Falsing sometimes occurs on a voice circuit when a human voice hits the exact pitch to which the tone decoder is tuned, a condition called talk-off. For the tone decoder to work reliably, the audio input level must be in the linear range of audio stages, (undistorted). A 1,500 Hz tone fed into an amplifier that distorts the tone could produce a harmonic at 3,000 Hz, falsely triggering a decoder that is tuned to 3,000 Hz. (en)
prov:wasDerivedFrom	wikipedia-en:Falsing?oldid=1051895787&ns=0
page length (characters) of wiki page	4598 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Falsing
is Link from a Wikipage to another Wikipage of	Index of law articles Error correction code Continuous Tone-Coded Squelch System LTR MultiNet Out-of-band 2600 hertz Telephone exchange Ringing (signal) Blue box In-band signaling Single-frequency signaling Selective calling False decode
is Wikipage redirect of	False decode
is foaf:primaryTopic of	wikipedia-en:Falsing

Faceted Search & Find service v1.17_git147 as of Sep 06 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 08.03.3331 as of Sep 2 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (378 GB total memory, 69 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software