Analog signals are continuous, and when converting analog signals into digital signals, it is important to understand that analog signals are continuous while digital signals are discrete. Discretization includes both time and amplitude discretization. The independent variable of this signal is represented by an integer, and the dependent variable is represented by a finite number.
Analog signals are generally quantized into digital signals through PCM pulse code modulation, which means that different amplitudes of the analog signal correspond to different binary values. For example, using 8-bit encoding can quantize analog signals into 2 ^ 8=256 orders of magnitude, and in practice, 24 bit or 30 bit encoding is often used.
Analog signal: refers to a continuous signal of information parameters within a given range. Or within a continuous time interval, the characteristic quantity representing information can be presented as a signal of any value at any moment.
