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Does analog signals suffer from attenuation more than digital signals?
Wiki User
∙ 9y ago
With an analog signal, it shrinks with distance. So its gets harder to tell when it is "there". A digital signal shrinks with distance. So as long as it is detectable, it is "there". So as a wave gets attenuated and then not by, say, variations in weather, to respond to an analog signal gets more difficult. With a digital wave, if you can find it -- it's there.
Wiki User
∙ 9y ago
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What is the meaning of you made your bed now lie in it?
It means: You must suffer the consequences of your own decisions and actions.
How does a pachymeter work?
There is a nice article on this optical device in wikipedia. It is better you don't suffer my transcription errors.
Which subatomic particles can't change?
All subatomic particles may suffer changes (if you think to "changes", not to "charges").
What are all of the different types of physics?
One way to look at this is that there are three basic mediums: solid, liquid and gas. You may want to add plasma as a fourth. These are exciteable mediums. When we study mechanics, we look at mechanical energy and these dynamic mediums. Certainly the material or materials that make up a medium can vary. Air for example. It is composed of a number of gases and other things. But it is treated as a gaseous medium through which sound waves, which are mechanical energy, pass. Sound will pass through solids, liquids and gases, and will suffer varying rates of attenuation. The sun is a ball of plasma, but waves have been seen rippling across its surface. The plasma is a medium across which the wave, which is mechanical energy, can pass. Just like a ripple on a pond. A vacuum might be added to the list, but justification would be thin. Light, which is electromagnetic energy, will pass through a vacuum. No mechanical energy will. There are other criterion for mediums, like mediums for storing, say, digital information. Punch cards or punched tape? Magnetic tape or disc? Optical disc? The physics of data storage is advancing in its ability to hold more date in less space.
What was the impact using atomic bomb on cities of Hiroshima and Nagasaki?
Two cities were destroyed and in 800,000 died in an instant. People still suffer from radiation poisoning.
What is weakness of analog audio?
Analog audio, like other analog signals, can be affected by external factors that are able to alter the signal. The factors include other electrical signals or magnetic fields for example. Analog signals that are carried a long distance can suffer from losses such as reduced levels, reduced high frequencies or noise being induced along the length of the cable. There are many techniques used to overcome these weaknesses and they provide the means to transmit analog signals with great clarity. While digital signals tend to overcome many of the analog problems, analog still has the ability to deliver results that are every bit as good, and sometimes, better results than digital.
What are the advantages of using digital signals and why?
* Digital signals suffer less interferences than analogue signals. This means that when you listen to a digital signal you won't hear a hissing sound, as within digital signals regenerator circuits are used to clean "noisy" pulses. * Digital signals can be made very short so more pulses can be carried around each second, which means more information can be passed on.
What is the best signal between analog and digital?
This is a difficult question to answer. Digital signals in television and audio are hailed as the "best" quality but there are many factors that affect the quality of both analog and digital signals. Digital signals are not prone to quality loss once they are in a digital form. The data that makes up the signal can normally be stored, transmitted and received without error so the quality will be identical from start to finish. Analog signals can suffer from interference and losses which increase with the length of transmission line and with every active process used as the signal is stored and delivered. Therefore, in terms of quality loss, digital is likely to be the better medium. Digital signals in video and audio are frequently compressed. Raw HD data needs a data rate of 1500 megabits per second but broadcasters frequently compress an HD signal to as little as 6 megabits per second. The compression process inevitably results in a loss of detail and a loss of quality. SD data rates are 270 megabits as an uncompressed signal but are compressed to as little as 1-2 megabits for broadcast. Again, the signal quality suffers. Analog signals are always broadcast as full bandwidth signals so they do not suffer from quality loss due to compression. The final judgment regarding the best signal must be based on the quality of image seen. Without doubt, digital signal processing can deliver quality that most analog signals can never achieve but in reality, that is not always the case. Highly compressed digital television signals can often show a variety of unpleasant effects such as jerky movement and large blocks of the image without detail. As broadcasters devote more bandwidth to digital signals, the quality will improve but the quality is dependent on sufficient bandwidth for each signal. There will be many differing opinions on this topic but it must always be accepted that "digital" does not automatically mean "better".
What does a DVi-VGA cable do?
A DVI-D cable is a digital video display connector used in computers. It supports the same resolutions as VGA which has been the analog standard for many years. Digital signals do not suffer from timing errors that can sometimes reduce the clarity of an image delivered with VGA. Note that there are two other formats. DVI-A uses the DVI connector but it carries an analog signal identical to that of VGA connector. A DVI-I carries both digital and analog signals and therefore provides two video links within the same cable. Finally, DVI digital signals are compatible with HDMI video signals. DVI does not carry sound in either digital or analog video formats whereas HDMI supports sound within the same cable.
Does Analogue computers have a higher accuracy in their operation?
This is a brief description of an analogue computerAn analog computer is a form of computer that uses the continuously changeable aspects of physical phenomena such as electrical,mechanical, or hydraulic quantities to model the problem being solved. In contrast, digital computers represent varying quantities symbolically, as their numerical values change. As an analog computer does not use discrete values, but rather continuous values, processes cannot be reliably repeated with exact equivalence, as they can with Turing machines. Analog computers do not suffer from the quantization noise inherent in digital computers, but are limited instead by analog noise.Analog computers were widely used in scientific and industrial applications where digital computers of the time lacked sufficient performance. Analog computers can have a very wide range of complexity. Slide rules and nomographs are the simplest, while naval gunfire control computers and large hybrid digital/analog computers were among the most complicated.[1] Systems for process control and protective relaysused analog computation to perform control and protective functions.Source: Wikipedia
What possible damage can analog meter suffer if the polarity connections are reversed?
It shows reverse readings
What is tv white noise?
White noise is also called "snow" and it looks like a snow storm on the screen. It is the result of an analog receiver not getting a signal and it can be compared to the hiss from a radio when it loses its signal. Modern televisions often suppresses the noise and digital televisions do not suffer from it at all.
Can you use ps2 component cables through composite?
You can, but I'd suggest that it's used only for short runs, maybe up to 6 feet, max. The picture quality will probably suffer due to internal signal reflections, causing ghosting of the image or ssome smearing of the video, but it'll work.
How does gabapentin work?
Gabapentin is a prescription drug given to people that suffer from epilepsy. The drug works by blocking nerve signals in a persons brain.
What are the advantages of digital electronics?
digital electronics is nothing but dealing 0's and 1's.. digital stand for digit. basically it has two states "1" as true and "0" false. This also known as machine language since computers simply understand these two states true or false. the machine then makes decision based on the program premise of what to do when true or falseAlternatively, Digital electronics is the study of decision circuits in computing.
What is the purpose of using digital devices?
A digital system[1] is a data technology that uses discrete (discontinuous) values. By contrast, non-digital (or analog) systems use acontinuous range of values to represent information. Although digital representations are discrete, the information represented can be either discrete, such as numbers, letters or icons, or continuous, such as sounds, images, and other measurements of continuous systems.The word digital comes from the same source as the word digit and digitus (the Latin word for finger), as fingers are used for discrete counting. It is most commonly used in computing and electronics, especially where real-world information is converted to binary numeric form as in digital audio and digital photography.When data is transmitted, or indeed handled at all, a certain amount of noise enters into the signal. Noise can have several causes: data transmitted wirelessly, such as by radio, may be received inaccurately, suffer interference from other wireless sources, or pick up background noise from the rest of the universe. Microphones pick up both the intended signal as well as background noise without discriminating between signal and noise, so when audio is encoded digitally, it typically already includes noise.Electric pulses transmitted via wires are typically attenuated by the resistance of the wire, and changed by its capacitance or inductance. Temperature variations can increase or reduce these effects. While digital transmissions are also degraded, slight variations do not matter since they are ignored when the signal is received. With an analog signal, variances cannot be distinguished from the signal and so provide a kind of distortion. In a digital signal, similar variances will not matter, as any signal close enough to a particular value will be interpreted as that value. Care must be taken to avoid noise and distortion when connecting digital and analog systems, but more when using analog systems.
Why do digital televisions have better pictures than analog?
It is probably best to start the answer by saying that the question makes an incorrect assumption. Good quality analogue signals are significantly better than many digital signals received in the home. The reason is that all domestic digital signals are heavily compressed using a "lossy" compression. This compression uses techniques that discard much of the signal byt does it in a way that is not normally noticed by viewers.Having said that, it is rare that the analogue signal received in a home will be of the same quality that was originally broadcast. Transmission as a radio signal or via cable give rise to distortion and noise on the signal. Poor aerials on houses or poor cable connections in a house often contribute to quality loss. As noise and distortion increase on an analogue signal, so the image quality reduces and eventually can get drowned in white snow.Although digital signals suffer the same degradation, as long as the receiver can sort out the high and low levels that make up a digital signal, the picture quality will be identical to the transmission quality. If the receiver cannot make out the high and low levels then the picture will be completely lost. There is almost no situation where the image will be noisy - it's either good or non existant.So, although compressed digital signals are rarely as good picture quality as the analogue equivalent, it is far more likely that the received quality will be better by the time it reaches a television.It is worth mentioning that many modern digital televisions have image processors that enhance images so that they appear sharper or richer than they are. The viewer perceives many of the enhancements as better quality even though they do not technically improve resolution or colour depth. The older analogue televisions rarely have image enhancement and can appear softer as a result.Finally, analogue televisions tend to be tube based rather than plasma or LCD and are likely to be several years old. Tubes age and after a number of years can produce soft and washed out images. Compared to LCD or plasma, they can look very poor quality.
