鉴于数字正弦波发生器广泛地用来作为数字地震仪和地震检波器的性能测试的信号源,本文简要介绍并着重讨论数字正弦波发生器的原理及存储正弦波一个周期上的取样点数和样点的数据长度对其输出正弦波谐波失真度的影响,从而提出根据设计要求,如何选择在正弦波一个周期上的取样点数和样点的数据长度。 As digital sine wave generator is widely used as a signal source for the performance testing of digital seismometers and geophones, this paper briefly introduces and focuses on the principle of digital sine wave generator and the storage of sine wave sampling points and samples on a cycle Point data length of its output sine wave harmonic distortion effects, which proposed according to the design requirements, how to choose a sine wave in a cycle of sampling points and sample data length.