- #1
Physicsissuef
- 908
- 0
digital and quantized signal, are one same thing?
Digital and quantized signal, are one same thing?
In summary, digital and quantized signal are generally considered to be the same thing, but it ultimately depends on the specific application. Digital audio is a quantized signal, but some devices, like class D amplifiers, may not be considered fully digital. The decoding process for a digital signal varies depending on the type of signal and its intended use.
- #2
greeniguana00
- 53
- 0
Generally, yes, but it depends. Digital audio is a quantized signal, but class D amplifiers (which quantize in the time dimension) are not considered digital. I guess you could think of digital as complete quantization.
- #3
Physicsissuef
- 908
- 0
greeniguana00 said:
How the calculator decodes the digital signal?
- #4
jtbell
Staff Emeritus
Science Advisor
Homework Helper
- 15,965
- 6,247
Calculator? 
Do you have some particular kind of digital signal in mind? Audio, video, or what?
Electrical engineering and electronics isn't my field, but I do know that there are a variety of ways of modulating digital data onto an analog carrier signal, and which ones are used depends on the application. For digital television, for example, there are 8VSB (ATSC) (used for broadcast TV in the USA and some other places), QAM (used for cable TV in the USA), DVB (used for broadcast TV in Europe), etc.
Do you have some particular kind of digital signal in mind? Audio, video, or what?
Electrical engineering and electronics isn't my field, but I do know that there are a variety of ways of modulating digital data onto an analog carrier signal, and which ones are used depends on the application. For digital television, for example, there are 8VSB (ATSC) (used for broadcast TV in the USA and some other places), QAM (used for cable TV in the USA), DVB (used for broadcast TV in Europe), etc.
Last edited:
FAQ: Digital and quantized signal, are one same thing?
What is the difference between digital and quantized signals?
Digital signals are represented by discrete values, while quantized signals are continuous but have a limited set of possible values. In other words, digital signals have a finite number of levels, while quantized signals have an infinite number of levels but only a few are used.
How are digital and quantized signals created?
Digital signals are created by converting analog signals through a process called sampling, which involves measuring the signal at regular intervals and assigning a digital value to each sample. Quantized signals are created by rounding the values of a continuous signal to the nearest discrete value.
Do digital and quantized signals have the same accuracy?
No, digital and quantized signals have different levels of accuracy. Digital signals are limited by the number of bits used for each sample, while quantized signals are limited by the number of levels available. In general, digital signals have higher accuracy than quantized signals.
Can digital and quantized signals be converted to each other?
Yes, digital and quantized signals can be converted to each other through a process called digital-to-analog conversion (DAC) and analog-to-digital conversion (ADC). DAC converts digital signals to analog by reconstructing the signal using a series of voltage levels. ADC converts analog signals to digital by measuring the signal at regular intervals and assigning digital values to each sample.
What are some common applications of digital and quantized signals?
Digital signals are commonly used in communication systems, such as telephones and computer networks, as well as in digital audio and video recording. Quantized signals are used in analog-to-digital conversion for data compression, as well as in digital audio and image processing. Both types of signals are also used in various scientific and engineering applications, such as data acquisition and control systems.