Digital and quantized signal, are one same thing?

AI Thread Summary
Digital signals and quantized signals are generally considered the same, as digital audio is a form of quantized signal. However, class D amplifiers, which quantize in the time dimension, are not classified as digital. The discussion highlights that digital signals can be modulated onto analog carriers in various ways, depending on the application. Different modulation techniques are used for digital television, including 8VSB for broadcast TV in the USA and QAM for cable TV. Understanding these distinctions is crucial in fields like electrical engineering and electronics.
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digital and quantized signal, are one same thing?
 
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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.
 
greeniguana00 said:
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.

How the calculator decodes the digital signal?
 
Calculator? :confused:

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.
 
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