AM is most susceptible to noise.
Disadvantage of Analog Communication: 1)Analog Communication systems are costlier than digital communication system. 2)Less Security in Analog Communication 3)More prone to noise interference.
A: Noise effect an analog signal by adding or subtracting from the signal
White Noise
Digital GND has more noise than Analog GND. So never mix up Digital GND to Analog GND to avoid the coupling from Digital to Analog GND
Analog-to-digital conversion
Digital signals are "forced" to be either 1 or 0, whereas analog signals are not. This means that a signal of 0.8 will be pushed to 1 in a digital signal and will remain 0.8 in an analog signal, and 0.2 will be 0 digital and 0.2 analog. This means that in order to overwhelm a digital signal the noise must do much more work to be effective. digital signal have only two states analog have infinite states therefore more susceptible to noise
Digital photography noise is a common occurrence in photography when the setting of the ISO is too high or if you are using a cheap digital camera. When you press the shutter on your camera, light hits the sensor, and an analog signal is produced, which is converted to a digital image. If, during this time, something messes up the particles creating the analog signal, then noise is produced. Noise can be reduced in Photoshop www.goldprints.com
ANALOG:continuous,rate of transmission is slow,less reliable 2 transmit,more noise,interference is more DIGITAL:non continuous,rate of transmission is fast,more reliable 2 transmit,less noise,interference is less
—Analog digital hybrid modulation seeks the ways to eliminate the incoherent quantization noise component in digital communication, instead of conveniently making it minimal.
Signal crosstalk. Most specifically is high speed digital switching noise being picked up by analog circuits and upsetting their operation.
Data regeneration is not possible in analog circuits.Signals has degeneration and distortion so it causes noise.But in digital circuit signals are quantizated and regenerated even if they had corruption.