英语翻译The A/D converter in Figure 1 performs the initial ampli

英语翻译
The A/D converter in Figure 1 performs the initial amplitude discretization for the input analog ultrasonic signal prior to further conversion needed during processing by either a fixed or floating-point signal processor.This conversion process quantizes the signal amplitudes into a sequence of finite-precision samples.The precision or quantization error is determined by the number of amplitude quantization levels.This quantization error can be represented as an additional noise signal component,as illustrated below in Figure 2.
google翻译出来的答案不要，因为语言不准确，