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Topic: Analog vs Digital

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	Analog sound vs. digital sound - Wikipedia, the free encyclopedia
		Briefly, an analog recording is a physical representation of the original sound encoded on a substrate such as the groove of a gramophone disc or the magnetic field of a magnetic tape.
		A damaged digital medium, such as a scratched compact disc may also yield degraded reproduction of the original sound, due to the loss of some digital information in the damaged area (but not due directly to the physical damage of the disc).
		It makes in fact little sense claiming that an analog signal can "use" all the available physical resolution of a medium and be accurately recorded, when that same signal can be weaker, at low levels, than the sum of all external noise, interference, and unwanted signals that are recorded at the same time.
	en.wikipedia.org /wiki/Analog_sound_vs._digital_sound (906 words)

	Digital - Encyclopedia.WorldSearch (Site not responding. Last check: 2007-11-03)
		The analog to digital converter only has a certain resolution: whereas the human eye may be able to detect tens of thousands of different intensities of pure green, the CCD in a digital camera may only be capable of 256, and at a resolution of a megapixel or so.
		Although digital signals are generally associated with the binary electronic digital system used in modern electronics and computing, digital systems are actually ancient, and need not be binary nor electronic.
		Smoke signals are one of the oldest examples of a digital signal, where an analog "carrier" (smoke) is modulated with a blanket to generate a digital signal (puffs) that convey information.
	encyclopedia.worldsearch.com /digital.htm (770 words)

	What's the difference between digital and analog recording? (Site not responding. Last check: 2007-11-03)
		Digital recording is a sampling process, which means that "samples" of the audio signal are being stored - not the entire audio signal.
		Analog recording is the process of storing the constant audio signal (some refer to it as "infinite" sampling, when comparing it to digital).
		Digital audio is much easier to manipulate than analog audio (for me, at least).
	www.jmudloff.org /recording/digitalvsanalog.html (580 words)

	Analog vs digital (Site not responding. Last check: 2007-11-03)
		Reprogrammablity: digital aids are reprogrammable so if your hearing changes, you have greater latitude to re-set the hearing aid than you do with analog aids.
		Analog aids need to be adjusted for volume, and all sound levels is adjusted at all frequencies, a much more coarse control than with digital aids.
		Analog aids have more circuit noise and inherent distortion due to the nature of their construction.
	pages.zdnet.com /donregan/yourtestresults/id4.html (200 words)

	Analog Vs. Digital Computing History - Analog Vs. Digital Computing Information
		In using a digital computer to solve a mathematical equation, for example, certain bits inside the computer are arranged to symbolize the constants and variables in the equation and others are arranged to symbolize the mathematical rules for manipulating those constants and variables.
		Digital computers merely employ more roundabout analogies: in them, voltages are made to behave like binary digits and binary digits are made to behave like higher-level mathematics.
		Many varieties of analog differential analyzer were built during the 20th century for solving equations in various fields of physics and engineering, but thanks to the increasing speed and cheapness of digital computers the differential analyzer has now largely fallen out of use.
	www.bookrags.com /sciences/computerscience/analog-vs-digital-computing-wcs.html (1073 words)

	Cell Phones - Analog or Digital?
		Digital service is more advanced in terms of communication, in that they offer better quality hardward, clearer transmissions and give users far fewer busy signals.
		Many nationwide wireless service providers have a digital network in place or are at least in the process of trying to convert their cellular network to a digital network.
		Digital is known to up the efficiency in the network, meaning an operator can fit more information into each transmission; that's why so many are now converting their systems to digital.
	www.wirelessguide.org /phone/types.htm (1467 words)

	Analog vs. Digital Systems
		Since analog and digital systems appear everywhere these days; it is useful to have a short discussion on what the terms mean and what these systems are.
		The output voltage is "analogous" to the temperature.
		Thus in the digital case the noise must be 50 percent of the signal level or more to he heard at all.
	www.cellphoneinfo.com /ana_vs_dig.html (1242 words)

	Technical Reference Infobase: Analog vs. Digital (Site not responding. Last check: 2007-11-03)
		Analog information's advantage is its ability to fully represent a continuous stream of information.
		Digital data, on the other hand, is less affected by unwanted interference, or noise.
		In digital computers, data is stored in individual bits, which have a value of either 1 (on) or 0 (off).
	www.modems.com /glossary/glos1.html (131 words)

	Analog vs. Digital Transmission
		One key difference between analog and digital transmission involves the bandwidth, or transmission capacity required for both schemes.
		Analog modulation, which is continuously variable by nature, can often require adjustment at the receiver end in order to reconstruct the transmitted signal.
		Digital transmission, however, because it uses only 1’s and 0’s to encode the signal, offers a simpler means of reconstructing the signal.
	www.fiber-optics.info /articles/analog-v-digital.htm (377 words)

	Computer (Site not responding. Last check: 2007-11-03)
		A fundamental decision in designing a computer is whether it should be digital or analog.
		Since the 1940s digital computers have become by far the most common, although analog computers are still used for some specialized purposes such as robotics and cyclotron control.
		The modern, digital, electronic, general-purpose computer was developed, by many contributors, over an extended period from the mid 1930s to the late 1940s, during this period many experimental machines were built that were possibly Turing complete (ABC, ENIAC, Harvard Mk I, Colossus etc see the History of computing hardware).
	www.brainyencyclopedia.com /encyclopedia/c/co/computer.html (3438 words)

	TriNet:Instrumentation (Site not responding. Last check: 2007-11-03)
		However, each analog station is somewhat simpler, the time stamping of the data is done simultaneously, and the data conversion hardware is at the central site, so the analog stations are somewhat easier to maintain.
		Digital stations, on the other hand, have high and low gain sensors and do their data conversion at the sensing site itself with 24 bit digitizers, thus allowing both small and large signals to stay on scale.
		The digital information is then sent via digital data link to the central site where it is able to be used immediately by the computers processing and storing the data.
	www.trinet.org /instr.html (688 words)

	Analog Vs. Digital
		Analog is when a signal is transmitted in its original format with a wave signal, Digital is when that wave signal is broken down into 1's and 0's, transmitted, then the 1's and 0's are built back into a wave.
		Digital systems do not have "analog" ports unless you are referring to a port that can handle an older analog phone made for an older version of the same manufacturer's phone system.
		The reason for the confusion is that a digital system needs to convert the signal to analog on their single line ports because all home phone devices are built to receive analog signals.
	home.maine.rr.com /sfg2/Help/analog-digital.html (255 words)

	Analog Vs. Digital - Conversion
		analog to digital converters are needed when something analog, like sound or video needs to be processed or transfered without data loss.
		A digital to analog converter is needed when attempting to "replay" the digital signal.
		A digital to analog converter may attempt to smoothen out the digital graph, but usually the quanta are so small that the digital data can be replayed without any alterations to be like the original.
	www.ece.utexas.edu /~trent/ee302project/conversion.htm (256 words)

	Analog Vs. Digital Hearing Aids
		Digital hearing aids are the newest kind of hearing aid and are superior to analog.
		Analog hearing aids don’t have all the features that come with advanced digital aids, but they are the least expensive hearing aids available.
		Many digital aids are designed to reduce steady kinds of background noise, such as the rumble of traffic or the whirr of a fan.
	www.hearingaidportal.com /hearingAidTech.asp (536 words)

	MacKiDo/Humor/HappyBirthdayAmerica
		The analog example I used was doing something that could be called discrete-analog -- where the analog level is expected to be at an absolute (discrete) value, and not wandering anywhere in between.
		It isn't that analog is bad, or that it can't be done -- some of the early computers, and some research computers have been analog.
		Digital is also very versatile in that you just pair more samples up (add more bits of resolution) to get more detail -- and it can have more detail (discrete levels) than any analog computer (single line) ever could.
	www.mackido.com /Hardware/AnalogVsDigital.html (2030 words)

	Analog vs. Digital (Site not responding. Last check: 2007-11-03)
		Analog technology requires information representing images and sound to be in a real-time continuous-scale electric signal between sources and receivers.
		Analog vs. digital video is a debate many people have when deciding what kind of video recorder to purchase or whether to digitize their videos.
		Digital copies will always be identical and will not loose their sharpness and clarity over time.
	et.sdsu.edu /SDadgar/videowebpage/analog.htm (245 words)

	ZenMastering -- Analog vs. Digital Mastering (Site not responding. Last check: 2007-11-03)
		Claims of digital being "cold" or "sterile" are just as unfounded as analog being inherently "warm" or "life-like." To be sure, each platform has its unique capabilities and characteristics, but they're not what most people believe them to be.
		Digital -- with its ability to apply (and undo) unique changes to a virtually unlimited number of scenarios -- has greater control than analog, but it comes with the side-effect of lower resolution.
		Much of what is criticized as missing in digital falls into the "unheard, but felt" category: overtones and undertones that are beyond the scope of current sampling standards.
	www.zenmastering.com /analogvsdigital.htm (502 words)

	Digital vs Analog (Site not responding. Last check: 2007-11-03)
		An analog clock is one with hands that move around the clock continuously producing a stream of time.
		The average digital clock, which shows the time by flashing the hour and the minute, produces distinct minutes but cannot represent a half of a minute or a quarter of a minute.
		Digital is the wave of the future because it gives us an accurate way to represent data and an easy way to mechanically store and manipulate that data.
	www.compukiss.com /sandyclassroom/tutorials/article273.htm (705 words)

	Epinions.com - Analog vs. Digital
		Analog and digital phones operate on opposite ends of the radio-wave spectrum, making neither type a phone compatible with the other's calling network.(Dual-mode phones, which are less common, work with both analog and digital networks).
		As a result, digital technology can pack at least three phone conversations into the same bandwidth gobbled up by one analog cell, which means fewer busy signals.
		I would recommend a digital phone to an analog phone, simply because the analog spectrum is running out of room for new customers, while digital is still unexploited.
	www.epinions.com /elec-review-D6E-CF019A4-38823F9A-bd1 (514 words)

	Analog vs. Digital - Grunt Productions
		Digital audio has reached 96khz recording technology, in fact 192hz is on the way.
		Digital audio from a far appears to be a very great looking comfortable bed but when you lay on it, it feels kind of harsh.
		So all digital audio needs to do is to continue to increase bit rate resolution capability, improve the bottom end and digital sound will eventually surpass even the best analog has right now.
	www.gruntproductions.com /recorded/analog_vs_digital.htm (567 words)

	Analog Vs.Digital (Site not responding. Last check: 2007-11-03)
		Analog data implies continuity, continuously varying level information signals, as contrasted to digital data that is concerned with discrete states, 1s and 0s.
		The information content of an analog signal is conveyed by continuously varying some characteristic such as amplitude, frequency or phase of a voltage or other characteristic of the signal.
		The information content of the digital signal is conveyed through discrete changes in the state of the signal such as the presence or absence of voltage (1 or 0) or discrete changes in voltage (+3, 0, -3) thereby making the information content of a digital signal less susceptible to electrical noise.
	www.easterndatacomm.com /analog_vs_digital.asp (198 words)

	Analog vs. Digital Tape Recording
		In the digital process, a computer looks at, or samples, the sound many times per second; during playback, it then reassembles the sound, filling in the holes, where the sound wasn't looked at, with what it thinks belongs there, based on what was looked at.
		It is these individuals who are rejecting the digital recording medium and its in-home partner, the compact disc player, as an inferior sound source, regression in reproducing music, another example of a world of accepted mediocrity or of large corporations' marketing progress for progress's sake to finance ongoing digital research.
		This method of digital pressing from an analog master is championed by a great many labels around the world, small though they may be, whose primary objective is nothing less than the finest possible quality of music capturing and reproduction for their valued clients.
	www.segall.com /atr.html (854 words)

	Audio - Computer/Minidisc
		In practice, digital recording equipment is rated according to the number of samples that are taken of the waveform (i.e., the music) in one second.
		In an analog system such as a tape, a coil of wire with a gap between north and south poles may be used to playback the recording.
		With a digital system however, it is not possible to simply pick up and amplify the digital bit stream in order to retrieve anything meaningful, because the digital bit stream doesn't "record" the waveform, but "describes" it in 1's and 0's.
	geraldtomyn.tripod.com /digan.htm (2337 words)

	Analog Vs. Digital Process Control and Fault Monitoring
		Because digital power controllers are capable of monitoring a number of parameters that can prove too costly to be measured by analog controllers, a change from analog to digital controllers may allow you to monitor process functions more precisely.
		With digital SCR power controllers, all parameters and faults directly related to each power controller (or each zone of control) are monitored, and many are controllable.
		Analog designs typically transfer process and control information through twisted-pair control wire connections carrying control signals (commonly 4 to 20 mA DC signals) and other relay-type contacts representing faults and alarms.
	www.spangpower.com /whatsnew-article3.htm (914 words)

	Emedia Professional: ANALOG vs. DIGITAL: no clear victor - Technology Information
		Digital's "ear fatigue" syndrome has me stopping an album midway through--a disturbing phenomenon for one who loves music as much as I do.
		The trade-off, analog enthusiasts say, is the loss of a natural, organic quality that many audiophiles say they hear only from analog sources such as LPs and tapes.
		Young has acknowledged the benefit of hiss-free recording that digital technology offers, with the caveat that "along with the hiss went depth of sound and the myriad possibilities of the high end where everything is like the cosmos, exploding stars, echo.
	www.findarticles.com /cf_dls/m0FXG/12_12/63973540/p1/article.jhtml (880 words)

	how computer monitors work, CRT computer monitor,television, resolution, analog vs digital interfaces,liquid crystal ...
		There are two signal standards existing today: analog and digital.
		The analog style of connector most commonly uses three individual BNC-terminated cables to carry the individual video/color information to the monitor, conforming to the RS170 standard.
		The TTL signals can be converted to analog, but resolution is lost and an additional adapter is required.
	www.montest.com /mon-app2.html (1235 words)

	Analog vs. Digital
		Current capabilities of digital cameras and the comparison of the classical architecture of digital cameras based on 35 mm SLR-systems and a digital optimized architecture, published in September, 2002 by
		In many areas, results from digital are as good as, if not better, than 35mm film.
		The report confirms what many have found that the digital sensors are highlighting the shortcomings of lenses that film is able to hide.
	www.rogercavanagh.com /helpinfo/25_analogvs.stm (348 words)

	Analog vs. Digital - Outer Sound
		digital doesn't do tricks, but many digital machines have features such as copy and paste, automatic punch in, total recall, and more.
		Analog tends to modify the original sound but in a pleasant way - mostly for guitars and bass.
		digital has basically zero noise while analog has some level of background tape hiss of varying degrees, depending on the quality of the machine and the tape.
	www.outersound.com /osu/recording/ana-dig.html (402 words)

	Edge: IS LIFE ANALOG OR DIGITAL?
		The essential difference between analog and digital computers is that an analog computer deals directly with continuous variables while a digital computer deals only with discrete variables.
		Their analog computer is a classical field propagating though space and time and obeying a linear wave equation.
		In a digital system, the energy gap between discrete states remains fixed as the temperature goes to zero, and the system ceases to operate when the temperature is much lower than the energy gap.
	www.edge.org /3rd_culture/dyson_ad/dyson_ad_index.html (2200 words)

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