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Topic: Line noise

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	Dealing with Line Noise
		The problem with line noise is that the FCC's specifications aren't high enough to guarantee error-free data connections at high modem speeds.
		Line noise can also be introduced by a phone line's proximity to power lines, transformers, or radio or television transmitters.
		Line noise can originate from a number of sources, but a bit of investigation and experimentation may prove helpful.
	www.brandywine.net /support/linenoise.htm (1265 words)

	line of best fit - Hutchinson encyclopedia article about line of best fit
		On a scatter diagram, line drawn as near as possible to the various points so as to best represent the trend being graphed.
		The sums of the displacements of the points on either side of the line should be equal.
		This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.
	encyclopedia.farlex.com /line+of+best+fit (105 words)

	Noise (physics) -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-26)
		In communications, it may be deliberate as for instance (Deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems) jamming of a radio or TV signal, but in most cases it is assumed to be merely undesired interference with intended operations.
		Loosely, any disturbance tending to interfere with the normal (A medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body) operation of a device or system.
		In some cases a little noise may be considered advantageous, allowing a (An excited state of agitation) dithered representation of signals below the minimum strength, or between two quantization levels.
	www.absoluteastronomy.com /encyclopedia/n/no/noise_(physics).htm (501 words)

	ARRLWeb: The Power-Line Noise FAQ Page
		If the radiated noise is observed on a 'scope, the noise will be present during the peaks, as shown in C. Because power-lines carry 60 Hz ac, the voltage on them passes through two peaks each cycle (one positive and one negative) and pass through zero twice each cycle.
		Noise that varies with the weather is almost always caused by an outdoor source, indicating power-line noise.
		Noise that varies with the time of day is related to what people are doing, usually pointing to some electrical device or appliance.
	www.arrl.org /tis/info/powerline-FAQ.html (6731 words)

	Line noise - Computing Reference - eLook.org (Site not responding. Last check: 2007-10-26)
		Line noise may be induced by poor connections, interference or crosstalk from other circuits, electrical storms, cosmic rays, or (notionally) birds crapping on the phone wires.
		Text that is theoretically a readable text or program source but employs syntax so bizarre that it looks like line noise.
		The canonical example is TECO, whose input syntax is often said to be indistinguishable from line noise.
	www.elook.org /computing/line-noise.htm (125 words)

	ARRLWeb: The Issue of Power-Line Noise
		The proliferation of electrical and electronic devices that are potential victims of power-line noise, coupled with today's increased dependence on mobile and wireless communications, have each contributed to this increase.
		Virtually all power-line noise, originating from utility company equipment, is caused by a spark or arcing across some power-line related hardware.
		This noise does not propagate very far from the source because it is a low-current phenomenon that does not couple into the adjacent wires.
	www.arrl.org /tis/info/HTML/pwr-line-noise (710 words)

	Line Noise
		Determine your phone line noise level with a HCF, HSF/Soft56, or ACF chipset based modem.
		Determine your phone line noise level with a Lucent LT Winmodem.
		Determine your phone line noise level with a BCM based modem.
	www.modemhelp.net /linenoise/noise.shtml (133 words)

	line noise (Site not responding. Last check: 2007-10-26)
		Line noise may be induced by poor connections, interference or crosstalk from other circuits, electrical storms,
		Text that is theoretically a readable text or program source but employs syntax so bizarre that it looks like line noise in senses 1 or 2.
		TECO; it is often claimed that “TECO's input syntax is indistinguishable from line noise.
	catb.org /~esr/jargon/html/L/line-noise.html (120 words)

	Line Noise - { \| one, step, back \| } (Site not responding. Last check: 2007-10-26)
		A Java programmer had taken a look at Ruby and declare that he didn’t like all that "line noise" in the language.
		The number in the paranthesis is the number of line noise characters in the file.
		It would be interesting to see if you could determine the language given only the line noise.
	onestepback.org /index.cgi/Tech/Ruby/LineNoise.rdoc (386 words)

	Electric Guitar Encyclopedia Guitar Chords Guitar Lessons Guitar Practicing Beginning Guitar Tips for Practice
		Such pickups tend to also pick up the ambient electrical noises of the room, the so-called "hum", with a strong 50 Hz or 60 Hz component depending on the locale.
		A similar effect may be achieved using a guitar with multiple single coil pickups with an appropriate selection of dual pickups.
		The resulting digital signal is delivered over a standard Ethernet cable, eliminating cable-induced line noise.
	www.guitarlessons.bizhosting.com /Electric_guitar.html (1646 words)

	Line Noise
		You should really not be having that high of a BLER count, but it is possible to connect to a server with that number of BLERs and still maintain an OK connection.
		Note that you CAN connect at higher speeds with these SNRs, and perhaps lower, and you CAN have a connection without dropped connections, but the lower the SNR, the more unstable any connection you receive becomes.
		Though the ratio may be poor, the actual "damage" that the noise causes can vary from modem to modem, connection to connection.
	www.modemhelp.net /linenoise/usr/usr.shtml (440 words)

	Welcome to Powerwerx DC Line Noise Filters
		DC Line Noise Filter for Yaesu FT-100 with Powerpoles
		DC Line Noise Filter for FM with OEM-T
		DC Line Noise Filter for FM with Powerpoles
	www.powerwerx.com /category.asp?CtgID=1849 (61 words)

	Headphones & earphones from Headphone World the World's Largest Headphones Store
		Headphones that are inserted into the ear canal and block external noise.
		Small headphones that sit inside the ear, usually about the size of a 5p.
		Headphones that block exterior noise so you get a clearer sound.
	www.headphoneworld.com (146 words)

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