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The natural sampling is one which can be represented with respect to amplitude of the analog signal.The flat top sampling is the one which can be represented in only a particular amplitude which cannot be changed with respect to the analog signalthis is true but let me add another difference that Is The Noise ...In Natural sampling : the sample take the top signals shape ( respect to amplitude of the analog signal ) which mean if there is noise above signal , when it will be demodulate with LBF (low pass filter ) it will cut from the original signal ,,,, We cant do that ...but In Flat-Top sampling : the sample shape will be lated so if there is noise we can remove it easily and the signal we be like it transmitted without any noise ...
A Gaussian noise is a type of statistical noise in which the amplitude of the noise follows that of a Gaussian distribustion whereas additive white Gaussian noise is a linear combination of a Gaussian noise and a white noise (white noise has a flat or constant power spectral density).
Noise triangle is a triangular noise distribution for FM.Noise triangle is the study of effect of noise on the carrier signal of the FM wave.
These help to distribute the frequency much better than the latter. The noise might not be as loud or boisterous this way.
removing noise from digital images. Noise is random color pixels which appears at digital images.
The natural sampling is one which can be represented with respect to amplitude of the analog signal.The flat top sampling is the one which can be represented in only a particular amplitude which cannot be changed with respect to the analog signalthis is true but let me add another difference that Is The Noise ...In Natural sampling : the sample take the top signals shape ( respect to amplitude of the analog signal ) which mean if there is noise above signal , when it will be demodulate with LBF (low pass filter ) it will cut from the original signal ,,,, We cant do that ...but In Flat-Top sampling : the sample shape will be lated so if there is noise we can remove it easily and the signal we be like it transmitted without any noise ...
Noise immunity is the ability of a system to perform even when there is noise present. The higher the level of noise a system can still operate under, the higher the noise immunity.
For the generation of a PAM signal we use a flat top type PAM scheme because during the transmission,the noise is interfered at top of the transmission pulse which can be easily removed if the PAM pulse in flat top.In natural top scheme this is not possible.
The best sampling method depends on the specific application and desired outcome. Natural sampling captures the original signal with no additional processing, flat-top sampling reduces noise by averaging samples over a longer time period, and sample and hold provides a constant signal value until the next sample. Choose the method that best suits your requirements for accuracy, noise reduction, and response time.
reduces
differential Manchester gives better noise immunity.
quantisation noise decrease and quantization density remain same.
Each logic family has a noise margin (also called "noise immunity") specified by the manufacturer. Manufacturers guarantee that the digital logic will still produce correct results even when some small amount of noise is superimposed on a gate output signal. The maximum amount of such noise that manufacturers are willing to guarantee is the noise margin. In order from highest to lowest noise immunity: high-threshold logic: ??? CMOS has a noise margin of 2.95 volts with a 10 V power supply. CMOS has a noise margin of 1.45 volts with a 5 V power supply. CMOS has a noise margin of 0.6 volts with a 3 V power supply. TTL has a noise margin of 0.3 volts. integrated injection logic (IIL): ???
noise is a ac signal(high frequency range), as LPF allows only lower frequencies integrator is has more noise immunity than differentiator
Signal to noise ratio is the difference between the noise floor and the reference level.
Over the ear offers better noise isolation.
Dolby noise reduction is currently the standard, and no better commercial alternative exists.