信号处理(signal processing) 是对各种类型的电信号，按各种预期的目的及要求进行加工过程的统称。对模拟信号的处理称为模拟信号处理，对数字信号的处理称为数字信号处理(Signal processing (signal processing) is for all types of electrical signals, according to various expectations and requirements of the processing process collectively. The processing of the analog signal is called analog signal processing, and the processing of the digital signal is called digital signal processing)