what is the advantages of an analogue signal?
957101
None really - thats why digital signalling has taken over, now we have the technology. A analogue signal attenuates over distance and if you amplify it you also amplify the noise and interference. Digital signals also attenuate but can be repeated, which leaves the unwanted part of the signal behind.
124344
advantage-  Cheaper and smaller\nDisadvantage- poorer resolution
57773
What kind of enhancement?  Just how much work do you expect us to do?  Also, I'm assuming DCT is equivalent to DFT and you're just asking what to do with the signal's spectrum.
821129
1.)  A signal that does not repeat itself in any given period\n\n2.)  A wave that is not congruent at the 0 and 180 degree phases\n\n3.)  The offset from 0 at which the amplitude reaches its lowest point\n\n4.)  A signal composed of multiple signals\n\n5.)  A method of transforming from the frequency domain to the time domain\n\n6.)  The spectrum of frequencies not included in the signal\n\n7.)  A analog signal that carries digitally encoded information\n\n8.)  Method of turning a ditial signal into an analog signal\n\n9.)  Method of turning an analog signal into a digital signal\n\n10.)  A method of combining both a digital and analog signal together
544643
Simply put, you break analog signals down into sinusoidal functions. Thus a signal that is analog can be expressed as a bunch of specific sine functions.
317414
The basic idea is this: If the two wires stay close together, the exprerience the same noise and distortion. The receiver senses the difference between the two wires. If the wires are seeing the same noise, then even in the presence of lots of noise, the difference between the signals on the two wires is still similar to what it was at the driving end.
477486
http://www.analogX.com
331343
The link below describes the basics.  Essentially, when you convert a sound from analog to digital, it has been found that if you sample the sound more than two times as fast as the highest sound a human can hear, the human ear cannot distinguish the digital sound from the original sound.  For telephones, for example, the bandwidth is about 4 KHz, so digital telephony has to sample the sound at least 8000 times per second.  For the best digital reproduction of analog sound that the human ear can hear, which is about 22KHz, we would have to sample at least 44000 times per second, which is why the best quality sound your PC records is 44 KHz.  This is called '2-times-oversampling.'  CDs are usually recorded at much higher rates, and they used to advertise CD players at '4-times-oversampling' and '8-times-' and so forth.  These days, even dirt-cheap CD players sample far faster than a human ear can detect, so you don't hear that anymore.
547359
two 4066's?  Try maxim www.maxim-ic.com, or possibly on semiconductor www.onsemi.com i'm sure there are many multi channel analogue switches - what are you using it for?
1148375
I think you have that backwards.  Monitors have historically been analog (VGA), but more and more are now becoming available with digital inputs (DVI).\n\nDigital offers many benefits over analog, including longer cable lengths and a superior picture, but suffers (currently) from extra expense.  However the price gap is constantly decreasing, and before long analog monitors will become as much a historical curiosity as black-and-white TV.\n\nThe main reason for the improved clarity is that a digital interface allows your video card to directly address each and every pixel on your monitor individually.  No longer does the monitor have to approximate the desired result; the card can tell it precisely what needs to be displayed on every discrete pixel.\n\nIf you get a chance to try a dual-input monitor on a dual-output PC, you'll be amazed at just how much sharper the digital image is when you switch between the two sources.
481454
ADF's detect an electric field and a magnetic field which are perpendicular in space and their amplitudes vary sinusoidally with time. The magnetic field induces a voltage into the windings of the ADF loop antenna. By measuring the phase difference between the windings the ADF is able to determine the direction of the beacon. \n\nPutting beacons around the house and using ADF to navigate turns out to be expensive and inefficient as GPS and proximity sensors are available and work better.
682702
www.tessco.com\n\nWhat type of signal are you trying to enhance??
398218
Successive approximation A/D's work similar to a binary search algorithm.  The result can be very accurate if the A/D is designed correctly and the rate of the analog signal is relatively slow compared to the clock of the A/D, or a sample and hold block is used.  \nhere is an example of the operation (for this example a 4bit and that the input voltage is 1.2V):\n1.  using a DAC apply 1000 as a reference the  "1" is the test bit (say 1000 =1V)\n2.  Compare analog signal to this reference (result true) therefore the test bit is kept\n3.  Now apply the next test bit and the kept bit 1100 (the one in the 4's place is the new test bit and the one in the 8's place is the kept bit 1100= 1.5V)\n4.  Compare analog signal to this reference (result is false 1.2V <1.5V) therefore test bit is not kept\n5.  Now apply the next test bit and the kept bit 1010 (the one in the 2's place is the new test bit and the "10" in the 8,4's place is the kept bits 1010= 1.25V)\n6. Compare analog signal to this reference (result is false 1.2V <1.25V) therefore test bit is not kept.\n7. Now apply the next test bit and the kept bit 1001 (the one in the 1's place is the new test bit and the "100" in the 8,4,2's place is the kept bits 1001= 1.125V)\n8. Compare analog signal to this reference (result is true 1.2V >1.125V) therefore test bit is kept.\nResult is 1001\n\nHope this helps
394540
Discrete Signal :\nObtained by sampling the analog signal at disctrete instants of time. However the magnitude of the discrete signals is same as that of the analog signal at that point in time. (Discrete only in time)\n\nDigital Signal :\nWhen the magnitude of the discrete signal is quantized to the the nearest integer, we get a digital signal. (Which is both discrete in magnitude & time)\n\nExample:\nSay, after sampling the analog signal, we get discrete signal as below\nx[0] = 0\nx[1] = 0.9\nx[2] = 1.8\nx[3] = 2.6\nx[4] = 2.1\nx[5] = 1.8 ....\n\nWhen you want to digitize this signal, you pass it through the ADC & the output would be as below.\nx[0] = 0\nx[1] = 1\nx[2] = 2\nx[3] = 3\nx[4] = 2\nx[5] = 2...\n\nThe above output depends upon the resolution of the ADC .\nMore the resolution, less the quantization error.\n\nI hope i answered your question.
1040817
Pretty sure yes. If anything, digital would be easier to spy on than analog.
688740
Easy to use, logical, does what it is supposed to, and doesn't cause problems that it is not intended to.  It would also be nice for it to be aesthetically pleasing.\n\nThis is a very generic description, but then yours is a very general question.
653342
applied electronics & instrumentation