1. digital signals¶
Until now, analog signals have been studied, which are voltage or current signals that can take any value within a range.
This is what an analog signal can look like:
Example of analog signal.¶
Digital signals, on the other hand, are signals that only take discrete values.
This is what a digital signal with some noise can look like:
Example of a digital signal with noise.¶
Digital signals can be converted into binary values and handle those binary numbers mathematically thanks to digital circuits. This provides many advantages to digital signals.
Advantages of digital signal¶
Immunity to noise.
Small value noise does not produce errors in the signal information.
Error detection and correction.
It can be calculated whether a digital signal has been degraded by noise (error detection) and any errors that have occurred can be corrected using mathematical techniques.
Lossless duplication.
Digital signals can be duplicated without losing quality, because the noise that is introduced into the digital system can be eliminated.
Ease of signal processing.
The digital signal can be easily processed with suitable software, which is capable of achieving more effects than analog processing. An example of this digital processing is the well-known Auto-Tune.
