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正弦波经过取样、编码后就成为脉冲流形式的数字信号。它也可以直接用数字电路来产生,这就是数字正弦发生器。本文介绍的这种数字正弦发生器是采用存贮器来实现的,是目前各国采用的一种较先进的方法。它能作为数字信号处理的信号源,提供各种频率的单频和双频正弦波。由于充分应用了数字电路时分复用的特点,电路能同时多路输出各种信号,发挥了经济上的优越性。电路也体现了数字电路其它优点。合成双频稳定准确,而不必采用滤波器,能对频率,相位和电平直接进行手控或计算机程控。
Sine wave through the sampling, encoded pulse stream after the form of a digital signal. It can also be generated directly by a digital circuit, which is a digital sine generator. This article describes the digital sine generator is implemented using memory, is currently a more advanced method used in various countries. It serves as a signal source for digital signal processing and provides single and dual-frequency sine waves at various frequencies. Due to the full application of the characteristics of digital circuit time division multiplexing, the circuit can simultaneously output multiple signals, exerting economic superiority. Circuit also embodies the other advantages of digital circuits. Synthetic dual-frequency stable and accurate, without having to use the filter, can be directly on the frequency, phase and level of manual or computer-controlled.